Go Yamashita. 11/Dec/2015 at Oxford

Size: px
Start display at page:

Download "Go Yamashita. 11/Dec/2015 at Oxford"

Transcription

1 IUT III Go Yamashita RIMS, Kyoto 11/Dec/2015 at Oxford The author expresses his sincere gratitude to RIMS secretariat for typesetting his hand-written manuscript. 1 / 56

2 In short, in IUT II, we performed Galois evaluation theta fct theta values env labels gau labels (MF -objects (filtered φ-modules) Galois rep ns) 2 / 56

3 Two Problems 1. Unlike theta fcts, theta values DO NOT admit a multiradial alg m in a NAIVE way. 2. We need ADDITIVE str. for (log-) height fcts. µ log 3 / 56

4 On 1. Gal. eval. theta fcts theta values admit multirad. alg m ( cf. [IUT II, Prop 3.4(i)] ) ( constant monoids F ) l requires cycl. rig. via LCFT (cf. [IUT II, Prop 3.4(ii), Cor 3.7(ii), Rem (ii)]) 4 / 56

5 Recall cycl. rig. via LCFT uses O = (unit portion) (value gp portion) O core O theta values We DO NOT share it in both sides of Θ-link! {q j2 } j q DO NOT admit a multirad. alg m in a NAIVE way. 5 / 56

6 cf. use only µ-portion O µ 0 O µ cycl. rig. via mono-theta env. cycl. rig. via Ẑ Q >0 = {1} µ do not interfere core µ 0 7 admit a multirad. alg m 6 / 56

7 To overcome these problems, use log link! & allowing mild indet s non-interference etc. (later) 7 / 56

8 want to see alien ring str. O µ Θ-link log-link eye Note F ± l -symm. isom s are compatible w/ log-links can pull-back Ψ gau via log-link 8 / 56

9 However, O µ Θ log log Θ is highly non-commutative (cf. log(a N ) (log a) N ) cannot see from the right log 9 / 56

10 We consider the infinite chain of log-links log log log log this is invariant by one shift! 10 / 56

11 Important Fact k/q p fin. log O k log O k 1 2p log O k log shell = I k the domain & codomain of log are contained in the log-shell upper semi-compatibility (Note also: log-shells are rigid) 11 / 56

12 Besides theta values, we need another thing : we need NF (:= number field) to convert -line bdles into -line bdles and vice versa. 12 / 56

13 -line bdles def d in terms of torsors -line bdles def d in terms of fractional ideals natural cat. equiv. in a scheme theory 13 / 56

14 -line bdles def d only in terms of -str s admits precise log-kummer corr. But, difficult to compute log-volumes -line bdles def d by both of & -str s only admits upper semi-compatible log-kummer corr. But, suited to explicit estimates 14 / 56

15 We also include NFs as data (an NF) j v Q log(o ) theta values NFs } story goes in a parallel way in some sense ( of course essential difference cf. [IUT III, Rem 2.3.2, 2.3.3] ) 15 / 56

16 To obtain the final multirad. alg m: Frob.-like data assoc. to F-prime-strips Kummer theory étale-like data assoc. to D-prime-strips arith.-hol. forget arith. hol. str. mono-an. data assoc. to D -prime-strips 16 / 56

17 wall étale transport étale-like Kummer detachment Θ Frob.-like 17 / 56

18 Frobenius-picture log log Kummer log log theory log Θ log (cycl. rig. s) core étale-picture rad. data permutable rad. data 18 / 56

19 3 portions of Θ-link local G v G v share ( ht + fct) unit O µ O µ value gp q 1 2 N j 2 q N drastically changed global realified V v (R 0 ) v (, j 2, ) (R 0 ) v log q ( ht fct) 19 / 56

20 Kummer theory unit portions G v O µ = O k /µ Q p -module Θ wall + integral str. i.e. Im(O k ) (O µ H k )H fin. gen. H G v Z p mod. open non-ring theoretic log-shell G v O µ ( computable log-vol. ) 20 / 56

21 ( G v O ) k Kummer ( G v O k ( G v )) unlike the case of O k, Ẑ - indet. occurs container is invariant under this Ẑ -indet. OK cycl. rig. µ(g v ) µ(o k ) via LCFT? does not hold. now, we cannot use O k. use only O k 21 / 56

22 We want to protect value gp portion global real d portion from this Ẑ - indet! sharing O µ O µ w/ int. str. (Ind 2) Θ horizontal indet. 22 / 56

23 value gp portion O mono-theta cycl. rig. (unlike LCFT cycl. rig.) only µ is involved shared O µ O µ 0 core 0 µ µ NF portion Ẑ Q >0 = {1} cycl. rig. do not obstruct each others multirad. (on the function level) 23 / 56

24 Note also mono-theta cycl. rig. is compat. w/ prof. top. F ± l - sym. (conj. synchro.) log F ± l - sym. is compat. w/ log-links can pull-back coric (diagonal) obj. via log-links later LGP monoid (Logarithmic Gaussian Procession) 24 / 56

25 log log value gp portion After Kummer (Kummer) (log) n (n 0), take the action of q j2 on I Q coric Kummer log-kummer correspondence unit portion not compat. Kummer consider of a common rigid upper bound given by log-shell (Ind 3) log vertical indet. 25 / 56

26 value gp portion const. multiple rig. log label 0 splitting modulo µ of hor. core 0 O O q j2 O q j2 /O 0 & logp (µ) = 0 No new action appears by the iteraions of log. s No interference 26 / 56

27 Note also µ log (log p (A)) = µ log (A) if A bij log p (A) compatibility of log-volumes ( w/ log-links ) do not need to care about how many times log. s are applied. 27 / 56

28 In the Archimedean case, we use a system (cf. [IUT III, Rem 4.8.2(v)]) & { O /µ N O /µ N } µ N is killed in O /µ N & constructions (of log-links, ) & start from O /µ N s, not O (cf. [IUT III, Def 1.1(iii)]) we put weight N on O /µ N for the log-volumes (cf. [IUT III, Rem.1.2.1(i)]) 28 / 56

29 NF portion as well, consider the actions of (F mod ) j after (Kummer) (log) n (n 0) By F mod v O v = µ No new action appears in the interation of log. s No interference 29 / 56

30 cf multirad. contained in geom. container a mono-analytic container val gp eval theta fct theta values depends on labels ( & hol. str. ) q j2 NF eval ( )κ-coric fcts NF indep. of labels ( dep. on hol. str. ) F mod (up to {±1}) Belyǐ cusp tion 30 / 56

31 cycl. rig log-kummer theta mono-theta cycl. rig. no interference by const. mult. rig. NF Ẑ Q >0 = {1} no interference cycl. rig by F mod v O v = µ 31 / 56

32 vicious cycles µ Fr log Kummer Kummer µ ét µ ét indet. = I ord N 1 {±1} µ Fr theta I ord = {1} by zero of order = 1 at each cups cf. q j 2 s are NF I ord Im N 1 not inv. log under {±1} {1} by Ẑ Q >0 = {1} However the totally of we have (F OK. F mod ) {±1}-indet. mod is invariant under {±1} 32 / 56

33 cf. [IUT III, Fig 2.7] 0 is also permuted F ± l - sym. theta fct local & transcendental zero of order = 1 at each cusp theta q = e 2πiz only one valuation compat. w/ prof. top. cycl. rig. NF F l -sym. 0 is isolated global & algebraic rat. fcts. Note theta fcts/ theta values do not have F ± l - sym. But, the cycl. rig. DOES. use [, ] / 56 Never for alg. rat. fcts incompat. w/ prof. top. Ẑ Q >0 = {1} sacrifice the compat. w/ prof. top. many valuations global

34 Note also Gal. eval. use hol. str. labels theta Gal. eval. & Kummer compat. w/ labels the output F mod does not depend on labels. NF global real d monoids are mono-analytic nature ( units are killed) do not depend on hol. str. 34 / 56

35 unit O µ O µ (Ind 2) val. gp {q j2 } w/ (Ind 3) I Q ( ) NF M mod Kummer detachement étale-like objects 35 / 56

36 étale transport full poly G v G v (Ind 1) permutative indet. we can transport the data over the Θ-wall 36 / 56

37 Another thing Ψ gau t F l (const. monoids) labels come from arith. hol. str / 56

38 cannot transport the labels for Θ-link Θ-link F l 1 2 l ( = l 1 2 )??? 38 / 56

39 0? l ± -possibilities 1? l? in total (l ± ) l± -possibilities (l ± = l + 1 = l+1 2 ) the final inequality is weak. 39 / 56

40 use processions {0} {0, 1} {0, 1, 2} {0,, l } {?} {?,?} {?,?,?} {?,,?} then, in total (l ± )!-possibilities gives more strict inequality than the former case 40 / 56

41 A rough picture of the final multirad. rep n: (F mod ) 1 (F mod ) l {I Q 0 } {IQ 0, I Q 1 } {IQ 0,, I l Q } q 12 q 22 acts q (l ) 2 Ψ LGP const. mult. rig. value gp portion via canonical splitting modulo µ 41 / 56

42 By this multirad. rep s & the compatibility w/ Θ-link : {q j2 } 1 j l q w/ indet. s we cannot distinguish them!! deg 0 deg 0 w/ indet. s 42 / 56

43 (Ind1) permutative indet. G v G v in the étale transport (Ind2) horizontal indet. Θ O µ O µ in the Kummer detach. w/ int. str. (Ind3) vertical indet. log in the Kummer detach. log(o ) log O 1 2p log(o ) can be considered as a kind of descent data from Z to F 1 43 / 56

44 Z F1 (Ind1) Z hol. hull (Ind2) (Ind3) 44 / 56

45 q mono-analytic container log-shell hol. hull I Q possible images of {q j2 } j somewhere, it contains a region with the same log-volume as q 45 / 56

46 Recall {q j2 } j q 0 (ht) + (indet) log -diff ( 1 + ε) ( (+ log -cond) ) (ht) (1 + ε)(log -diff + log -cond) calculation in Hodge-Arakelov miracle equality 1 l 2 j j 2 [ log q ] l2 24 [ log q ] )) 1 l j[ ω E ] l2 24 [ log q ] 46 / 56

47 cf. Hodge-Arakelov IF a global mult. subspace existed qo q j2 O deg 0 deg 0 (large) 0 47 / 56

48 [IUT III, Th 3.11] In summary, tempered conj. ( diagonal hor. core ) vs prof. conj. F ± l -conj. synchro (semi-graphs of anbd.) compat. w/ (i)(objects) (ii)(log-kummer) (iii) ( Θ µ LGP -link ) F ± -symm. l F l -symm. others I unit Ψ LGPval gp compat. of log-link w/ F ± l -symm. ( ) M mod NF Belyǐ cusp tion pro-p anab. + hidden endom. compat. of log-volumes w/ log-links invariant after admitting (Ind3) no interference by const. mult. rig. ell. cusp tion pro-p anab. + hidden endom. no interference by F mod O v = µ v arch. theory: Aut-hol. space ( ) ell. cusp tion invariant after admitting (Ind2) Ẑ -indet. only µ is involved multirad. protected from Ẑ -indet. by mono-theta cycl. rig. quadratic str. of Heisenberg gp protected from Ẑ -indet. by Ẑ Q >0 = {1} picture: permutable (étale after admitting (Ind1) ) (autom. of processions are included) 48 / 56

49 Some questions 49 / 56

50 How about the following variants of Θ -link? i) {q j2 } j q N (N > 1) ii) {(q j2 ) N } j q (N > 1) 50 / 56

51 i) {q j2 } j q N it works l ht deg 0 & deg l N 0 (ht) + (indet.) (as for N l) (When N > l the inequality is weak) 51 / 56

52 ii) {(q j2 ) N } j q it DOES NOT work! 52 / 56

53 Because 1 Θ Θ N mono-theta replace cycl. rig. mono-theta cycl. rig. comes from the quadraticity of [, ] cf. [EtTh, Rem2.19.2] Θ N (N > 1) / Kummer compat. 53 / 56

54 2 mono-theta constant multiple rig. as well ext n str. of 0 O ( ) Aut C (( )) Aut D (( )) bs ) 1 cf. [EtTh, Rem5.12.5] 54 / 56

55 3 vicious cycles Θ N zero of order = N > 1 at cusps various Frob-like µ Kummer theory étale-like µ cusp Kummer log Kummer cf. [IUT III, Rem.2.3.3(vi)] log Kummer loop one loop gives once N-power 55 / 56

56 IF it WORKED 0 N(ht) + (indet.) (ht) 1 N (1 + ε)(log-diff. + log-cond.) contradition to a lower bound given by analytic number theory (Masser, Stewart-Tijdeman) 56 / 56

IUT IV sect 1. w/ some remarks on the language of species. Go Yamashita. 11/Dec/2015 at Oxford

IUT IV sect 1. w/ some remarks on the language of species. Go Yamashita. 11/Dec/2015 at Oxford IUT IV sect 1 w/ some remarks on the language of species Go Yamashita RIMS, Kyoto 11/Dec/2015 at Oxford The author expresses his sincere gratitude to RIMS secretariat for typesetting his hand-written manuscript.

More information

[IUTch-III-IV] from the Point of View of Mono-anabelian Transport IV

[IUTch-III-IV] from the Point of View of Mono-anabelian Transport IV [IUTch-III-IV] from the Point of View of Mono-anabelian Transport IV Main Theorem and Application Yuichiro Hoshi RIMS, Kyoto University July 22, 2016 Yuichiro Hoshi (RIMS, Kyoto University) IUTch-III-IV

More information

[IUTch-III-IV] from the Point of View of Mono-anabelian Transport III

[IUTch-III-IV] from the Point of View of Mono-anabelian Transport III . [IUTch-III-IV] from the Point of View of Mono-anabelian Transport III. Theta Values Yuichiro Hoshi RIMS, Kyoto University July 22, 2016 Yuichiro Hoshi (RIMS, Kyoto University) IUTch-III-IV July 22, 2016

More information

Shinichi Mochizuki (RIMS, Kyoto Univ.) Travel and Lectures

Shinichi Mochizuki (RIMS, Kyoto Univ.)   Travel and Lectures INTER-UNIVERSAL TEICHMÜLLER THEORY: A PROGRESS REPORT Shinichi Mochizuki (RIMS, Kyoto Univ.) http://www.kurims.kyoto-u.ac.jp/~motizuki Travel and Lectures 1. Comparison with Earlier Teichmüller Theories

More information

An Étale Aspect of the Theory of Étale Theta Functions. Yuichiro Hoshi. December 2, 2015

An Étale Aspect of the Theory of Étale Theta Functions. Yuichiro Hoshi. December 2, 2015 Introduction to Inter-universal Teichmüller Theory II An Étale Aspect of the Theory of Étale Theta Functions Yuichiro Hoshi RIMS, Kyoto University December 2, 2015 Yuichiro Hoshi (RIMS, Kyoto University)

More information

Shinichi Mochizuki (RIMS, Kyoto University) Travel and Lectures

Shinichi Mochizuki (RIMS, Kyoto University)   Travel and Lectures INVITATION TO INTER-UNIVERSAL TEICHMÜLLER THEORY (EXPANDED VERSION) Shinichi Mochizuki (RIMS, Kyoto University) http://www.kurims.kyoto-u.ac.jp/~motizuki Travel and Lectures 1. Hodge-Arakelov-theoretic

More information

Explicit estimates in inter-universal Teichmüller theory (in progress) (joint work w/ I. Fesenko, Y. Hoshi, S. Mochizuki, and W.

Explicit estimates in inter-universal Teichmüller theory (in progress) (joint work w/ I. Fesenko, Y. Hoshi, S. Mochizuki, and W. Explicit estimates in inter-universal Teichmüller theory (in progress) (joint work w/ I Fesenko, Y Hoshi, S Mochizuki, and W Porowski) Arata Minamide RIMS, Kyoto University November 2, 2018 Arata Minamide

More information

Hodge theaters and label classes of cusps

Hodge theaters and label classes of cusps 1 Hodge theaters and label classes of cusps Fucheng Tan for talks in Inter-universal Teichmüller Theory Summit 2016 July 21th, 2016 2 Initial Θ-data (F /F, X F, l, C K, V, V bad mod, ε) Recall the geometry:

More information

ON INTER-UNIVERSAL TEICHMÜLLER THEORY OF SHINICHI MOCHIZUKI. Fukugen no nagare. Ivan Fesenko October 2016

ON INTER-UNIVERSAL TEICHMÜLLER THEORY OF SHINICHI MOCHIZUKI. Fukugen no nagare. Ivan Fesenko October 2016 ON INTER-UNIVERSAL TEICHMÜLLER THEORY OF SHINICHI MOCHIZUKI Fukugen no nagare Ivan Fesenko October 2016 Original texts on IUT Introductory texts and surveys of IUT Materials of two workshops on IUT On

More information

Shinichi Mochizuki. December 2017

Shinichi Mochizuki. December 2017 INTER-UNIVERSAL TEICHMÜLLER THEORY I: CONSTRUCTION OF HODGE THEATERS Shinichi Mochizuki December 2017 Abstract. The present paper is the first in a series of four papers, the goal of which is to establish

More information

The Intrinsic Hodge Theory of p-adic Hyperbolic Curves

The Intrinsic Hodge Theory of p-adic Hyperbolic Curves The Intrinsic Hodge Theory of p-adic Hyperbolic Curves Shinichi Mochizuki Research Institute for Mathematical Sciences Kyoto University Kyoto 606-01, JAPAN motizuki@kurims.kyoto-u.ac.jp 1. Introduction

More information

. Mono-anabelian Reconstruction of Number Fields. Yuichiro Hoshi 2014/07/09

. Mono-anabelian Reconstruction of Number Fields. Yuichiro Hoshi 2014/07/09 .. Mono-anabelian Reconstruction of Number Fields Yuichiro Hoshi RIMS 2014/07/09 Yuichiro Hoshi (RIMS) Mono-anabelian Reconstruction 2014/07/09 1 / 21 1 Mono-anabelian Reconstruction of Number Fields Question:

More information

The Hodge-Arakelov Theory of Elliptic Curves

The Hodge-Arakelov Theory of Elliptic Curves The Hodge-Arakelov Theory of Elliptic Curves Shinichi Mochizuki Research Institute for Mathematical Sciences Kyoto University Kyoto 606-8502, JAPAN motizuki@kurims.kyoto-u.ac.jp 1. Main Results (Comparison

More information

A Panoramic Overview of Inter-universal Teichmüller Theory

A Panoramic Overview of Inter-universal Teichmüller Theory A Panoramic Overview of Inter-universal Teichmüller Theory By Shinichi Mochizuki Abstract Inter-universal Teichmüller theory may be described as a sort of arithmetic version of Teichmüller theory that

More information

BOGOMOLOV S PROOF OF THE GEOMETRIC VERSION OF THE SZPIRO CONJECTURE FROM THE POINT OF VIEW OF INTER-UNIVERSAL TEICHMÜLLER THEORY. Shinichi Mochizuki

BOGOMOLOV S PROOF OF THE GEOMETRIC VERSION OF THE SZPIRO CONJECTURE FROM THE POINT OF VIEW OF INTER-UNIVERSAL TEICHMÜLLER THEORY. Shinichi Mochizuki BOGOMOLOV S PROOF OF THE GEOMETRIC VERSION OF THE SZPIRO CONJECTURE FROM THE POINT OF VIEW OF INTER-UNIVERSAL TEICHMÜLLER THEORY Shinichi Mochizuki January 2016 Abstract. The purpose of the present paper

More information

A PROOF OF THE ABC CONJECTURE AFTER MOCHIZUKI

A PROOF OF THE ABC CONJECTURE AFTER MOCHIZUKI RIMS Kôkyûroku Bessatsu Bx (201x), 000 000 A PROOF OF THE ABC CONJECTURE AFTER MOCHIZUKI By Go amashita Abstract We give a survey of S. Mochizuki s ingenious inter-universal Teichmüller theory and explain

More information

Introduction to Inter-universal Teichmüller theory

Introduction to Inter-universal Teichmüller theory 1 Introduction to Inter-universal Teichmüller theory Fucheng Tan RIMS, Kyoto University 2018 2 Reading IUT To my limited experiences, the following seem to be an option for people who wish to get to know

More information

Kazhdan-Lusztig polynomials for

Kazhdan-Lusztig polynomials for Kazhdan-Lusztig polynomials for Department of Mathematics Massachusetts Institute of Technology Trends in Representation Theory January 4, 2012, Boston Outline What are KL polynomials for? How to compute

More information

COMMENTS ON THE MANUSCRIPT ( VERSION) BY SCHOLZE-STIX CONCERNING INTER-UNIVERSAL TEICHMÜLLER THEORY (IUTCH) Shinichi Mochizuki.

COMMENTS ON THE MANUSCRIPT ( VERSION) BY SCHOLZE-STIX CONCERNING INTER-UNIVERSAL TEICHMÜLLER THEORY (IUTCH) Shinichi Mochizuki. COMMENTS ON THE MANUSCRIPT (2018-08 VERSION) BY SCHOLZE-STIX CONCERNING INTER-UNIVERSAL TEICHMÜLLER THEORY (IUTCH) Shinichi Mochizuki September 2018 In the following, we make various additional Comments

More information

Arithmetic elliptic curves in general position. CMI Workshop in Oxford, December 2015 Ulf Kühn, Universität Hamburg

Arithmetic elliptic curves in general position. CMI Workshop in Oxford, December 2015 Ulf Kühn, Universität Hamburg Talk on Mochizuki s paper Arithmetic elliptic curves in general position CMI Workshop in Oxford, December 2015 Ulf Kühn, Universität Hamburg 1/30 Overview abc-conjecture. Let >0, then there exists a apple

More information

TOPICS IN ABSOLUTE ANABELIAN GEOMETRY III: GLOBAL RECONSTRUCTION ALGORITHMS. Shinichi Mochizuki. March 2008

TOPICS IN ABSOLUTE ANABELIAN GEOMETRY III: GLOBAL RECONSTRUCTION ALGORITHMS. Shinichi Mochizuki. March 2008 TOPICS IN ABSOLUTE ANABELIAN GEOMETRY III: GLOBAL RECONSTRUCTION ALGORITHMS Shinichi Mochizuki March 2008 Abstract. In the present paper, which forms the third part of a three-part series on an algorithmic

More information

Topics in Absolute Anabelian Geometry III: Global Reconstruction Algorithms

Topics in Absolute Anabelian Geometry III: Global Reconstruction Algorithms J. Math. Sci. Univ. Tokyo 22 (2015), 939 1156. Topics in Absolute Anabelian Geometry III: Global Reconstruction Algorithms By Shinichi Mochizuki Abstract. In the present paper, which forms the third part

More information

A PROOF OF THE ABC CONJECTURE AFTER MOCHIZUKI

A PROOF OF THE ABC CONJECTURE AFTER MOCHIZUKI RIMS Kôkyûroku Bessatsu Bx (201x), 000 000 A PROOF OF THE ABC CONJECTURE AFTER MOCHIZUKI By Go amashita Abstract We give a survey of S. Mochizuki s ingenious inter-universal Teichmüller theory and explain

More information

ON GALOIS GROUPS OF ABELIAN EXTENSIONS OVER MAXIMAL CYCLOTOMIC FIELDS. Mamoru Asada. Introduction

ON GALOIS GROUPS OF ABELIAN EXTENSIONS OVER MAXIMAL CYCLOTOMIC FIELDS. Mamoru Asada. Introduction ON GALOIS GROUPS OF ABELIAN ETENSIONS OVER MAIMAL CYCLOTOMIC FIELDS Mamoru Asada Introduction Let k 0 be a finite algebraic number field in a fixed algebraic closure Ω and ζ n denote a primitive n-th root

More information

INTER-UNIVERSAL TEICHMÜLLER THEORY IV: LOG-VOLUME COMPUTATIONS AND SET-THEORETIC FOUNDATIONS. Shinichi MOCHIZUKI. August 2012

INTER-UNIVERSAL TEICHMÜLLER THEORY IV: LOG-VOLUME COMPUTATIONS AND SET-THEORETIC FOUNDATIONS. Shinichi MOCHIZUKI. August 2012 RIMS-1759 INTER-UNIVERSAL TEICHMÜLLER THEORY IV: LOG-VOLUME COMPUTATIONS AND SET-THEORETIC FOUNDATIONS By Shinichi MOCHIZUKI August 2012 RESEARCH INSTITUTE FOR MATHEMATICAL SCIENCES KYOTO UNIVERSITY, Kyoto,

More information

Notes on p-divisible Groups

Notes on p-divisible Groups Notes on p-divisible Groups March 24, 2006 This is a note for the talk in STAGE in MIT. The content is basically following the paper [T]. 1 Preliminaries and Notations Notation 1.1. Let R be a complete

More information

THE MATHEMATICS OF MUTUALLY ALIEN COPIES: FROM GAUSSIAN INTEGRALS TO INTER-UNIVERSAL TEICHMÜLLER THEORY. Shinichi Mochizuki.

THE MATHEMATICS OF MUTUALLY ALIEN COPIES: FROM GAUSSIAN INTEGRALS TO INTER-UNIVERSAL TEICHMÜLLER THEORY. Shinichi Mochizuki. THE MATHEMATICS OF MUTUALLY ALIEN COPIES: FROM GAUSSIAN INTEGRALS TO INTER-UNIVERSAL TEICHMÜLLER THEORY Shinichi Mochizui December 2017 Abstract. Inter-universal Teichmüller theory may be described as

More information

Computing coefficients of modular forms

Computing coefficients of modular forms Computing coefficients of modular forms (Work in progress; extension of results of Couveignes, Edixhoven et al.) Peter Bruin Mathematisch Instituut, Universiteit Leiden Théorie des nombres et applications

More information

Essential dimension. Alexander S. Merkurjev

Essential dimension. Alexander S. Merkurjev Contemporary Mathematics Essential dimension Alexander S. Merkurjev Abstract. We review and slightly generalize some definitions and results on the essential dimension. The notion of essential dimension

More information

Problems on Growth of Hecke fields

Problems on Growth of Hecke fields Problems on Growth of Hecke fields Haruzo Hida Department of Mathematics, UCLA, Los Angeles, CA 90095-1555, U.S.A. A list of conjectures/problems related to my talk in Simons Conference in January 2014

More information

Isogeny invariance of the BSD conjecture

Isogeny invariance of the BSD conjecture Isogeny invariance of the BSD conjecture Akshay Venkatesh October 30, 2015 1 Examples The BSD conjecture predicts that for an elliptic curve E over Q with E(Q) of rank r 0, where L (r) (1, E) r! = ( p

More information

The Arithmetic of Noncongruence Modular Forms. Winnie Li. Pennsylvania State University, U.S.A. and National Center for Theoretical Sciences, Taiwan

The Arithmetic of Noncongruence Modular Forms. Winnie Li. Pennsylvania State University, U.S.A. and National Center for Theoretical Sciences, Taiwan The Arithmetic of Noncongruence Modular Forms Winnie Li Pennsylvania State University, U.S.A. and National Center for Theoretical Sciences, Taiwan 1 Modular forms A modular form is a holomorphic function

More information

6. DE RHAM-WITT COMPLEX AND LOG CRYS- TALLINE COHOMOLOGY

6. DE RHAM-WITT COMPLEX AND LOG CRYS- TALLINE COHOMOLOGY 6. DE RHAM-WITT COMPLEX AND LOG CRYS- TALLINE COHOMOLOGY α : L k : a fine log str. on s = Spec(k) W n (L) : Teichmüller lifting of L to W n (s) : W n (L) = L Ker(W n (k) k ) L W n (k) : a [α(a)] Example

More information

Extended groups and representation theory

Extended groups and representation theory Extended groups and representation theory Jeffrey Adams David Vogan University of Maryland Massachusetts Institute of Technology CUNY Representation Theory Seminar April 19, 2013 Outline Classification

More information

On the equality case of the Ramanujan Conjecture for Hilbert modular forms

On the equality case of the Ramanujan Conjecture for Hilbert modular forms On the equality case of the Ramanujan Conjecture for Hilbert modular forms Liubomir Chiriac Abstract The generalized Ramanujan Conjecture for unitary cuspidal automorphic representations π on GL 2 posits

More information

ARITHMETIC ELLIPTIC CURVES IN GENERAL POSITION

ARITHMETIC ELLIPTIC CURVES IN GENERAL POSITION Math. J. Okayama Univ. 52 (2010), 1 28 ARITHMETIC ELLIPTIC CURVES IN GENERAL POSITION Shinichi MOCHIZUKI Abstract. We combine various well-known techniques from the theory of heights, the theory of noncritical

More information

A Version of the Grothendieck Conjecture for p-adic Local Fields

A Version of the Grothendieck Conjecture for p-adic Local Fields A Version of the Grothendieck Conjecture for p-adic Local Fields by Shinichi MOCHIZUKI* Section 0: Introduction The purpose of this paper is to prove an absolute version of the Grothendieck Conjecture

More information

FORMAL GROUPS OF CERTAIN Q-CURVES OVER QUADRATIC FIELDS

FORMAL GROUPS OF CERTAIN Q-CURVES OVER QUADRATIC FIELDS Sairaiji, F. Osaka J. Math. 39 (00), 3 43 FORMAL GROUPS OF CERTAIN Q-CURVES OVER QUADRATIC FIELDS FUMIO SAIRAIJI (Received March 4, 000) 1. Introduction Let be an elliptic curve over Q. We denote by ˆ

More information

EXTENSIONS AND THE EXCEPTIONAL ZERO OF THE ADJOINT SQUARE L-FUNCTIONS

EXTENSIONS AND THE EXCEPTIONAL ZERO OF THE ADJOINT SQUARE L-FUNCTIONS EXTENSIONS AND THE EXCEPTIONAL ZERO OF THE ADJOINT SQUARE L-FUNCTIONS HARUZO HIDA Take a totally real field F with integer ring O as a base field. We fix an identification ι : Q p = C Q. Fix a prime p>2,

More information

SPEAKER: JOHN BERGDALL

SPEAKER: JOHN BERGDALL November 24, 2014 HODGE TATE AND DE RHAM REPRESENTATIONS SPEAKER: JOHN BERGDALL My goal today is to just go over some results regarding Hodge-Tate and de Rham representations. We always let K/Q p be a

More information

Hyperelliptic curves

Hyperelliptic curves 1/40 Hyperelliptic curves Pierrick Gaudry Caramel LORIA CNRS, Université de Lorraine, Inria ECC Summer School 2013, Leuven 2/40 Plan What? Why? Group law: the Jacobian Cardinalities, torsion Hyperelliptic

More information

Introduction to Combinatorial Anabelian Geometry III

Introduction to Combinatorial Anabelian Geometry III Introduction to Combinatorial Anabelian Geometry III Introduction Semi-graphs of Anabelioids 3 Application of CombGC 4 Proof of CombGC K: annf or anmlf K: an alg closure of K G K = Gal(K/K) (g, r): a pair

More information

VARIATION OF IWASAWA INVARIANTS IN HIDA FAMILIES

VARIATION OF IWASAWA INVARIANTS IN HIDA FAMILIES VARIATION OF IWASAWA INVARIANTS IN HIDA FAMILIES MATTHEW EMERTON, ROBERT POLLACK AND TOM WESTON 1. Introduction Let ρ : G Q GL 2 (k) be an absolutely irreducible modular Galois representation over a finite

More information

Topic Proposal Applying Representation Stability to Arithmetic Statistics

Topic Proposal Applying Representation Stability to Arithmetic Statistics Topic Proposal Applying Representation Stability to Arithmetic Statistics Nir Gadish Discussed with Benson Farb 1 Introduction The classical Grothendieck-Lefschetz fixed point formula relates the number

More information

Noncommutative motives and their applications

Noncommutative motives and their applications MSRI 2013 The classical theory of pure motives (Grothendieck) V k category of smooth projective varieties over a field k; morphisms of varieties (Pure) Motives over k: linearization and idempotent completion

More information

Theta divisors and the Frobenius morphism

Theta divisors and the Frobenius morphism Theta divisors and the Frobenius morphism David A. Madore Abstract We introduce theta divisors for vector bundles and relate them to the ordinariness of curves in characteristic p > 0. We prove, following

More information

Langlands parameters and finite-dimensional representations

Langlands parameters and finite-dimensional representations Langlands parameters and finite-dimensional representations Department of Mathematics Massachusetts Institute of Technology March 21, 2016 Outline What Langlands can do for you Representations of compact

More information

Why abc is still a conjecture

Why abc is still a conjecture Why abc is still a conjecture PETER SCHOLZE AND JAKOB STIX In March 208, the authors spent a week in Kyoto at RIMS of intense and constructie discussions with Prof. Mochizuki and Prof. Hoshi about the

More information

LECTURES ON DEFORMATIONS OF GALOIS REPRESENTATIONS. Mark Kisin

LECTURES ON DEFORMATIONS OF GALOIS REPRESENTATIONS. Mark Kisin LECTURES ON DEFORMATIONS OF GALOIS REPRESENTATIONS Mark Kisin Lecture 5: Flat deformations (5.1) Flat deformations: Let K/Q p be a finite extension with residue field k. Let W = W (k) and K 0 = FrW. We

More information

Frobenioids 1. Frobenioids 1. Weronika Czerniawska. The Univeristy of Nottingham

Frobenioids 1. Frobenioids 1. Weronika Czerniawska. The Univeristy of Nottingham Weronika Czerniawska The Univeristy of Nottingham 18.07.2016 A Frobenioid is a category that is meant to encode the theory of divisors and line bundles on coverings i.e. normalizations in various finite

More information

Finite group schemes

Finite group schemes Finite group schemes Johan M. Commelin October 27, 2014 Contents 1 References 1 2 Examples 2 2.1 Examples we have seen before.................... 2 2.2 Constant group schemes....................... 3 2.3

More information

Proof of the Shafarevich conjecture

Proof of the Shafarevich conjecture Proof of the Shafarevich conjecture Rebecca Bellovin We have an isogeny of degree l h φ : B 1 B 2 of abelian varieties over K isogenous to A. We wish to show that h(b 1 ) = h(b 2 ). By filtering the kernel

More information

GEOMETRIC CLASS FIELD THEORY I

GEOMETRIC CLASS FIELD THEORY I GEOMETRIC CLASS FIELD THEORY I TONY FENG 1. Classical class field theory 1.1. The Artin map. Let s start off by reviewing the classical origins of class field theory. The motivating problem is basically

More information

Shinichi Mochizuki. November 2015

Shinichi Mochizuki. November 2015 TOPICS IN ABSOLUTE ANABELIAN GEOMETRY III: GLOBAL RECONSTRUCTION ALGORITHMS Shinichi Mochizuki November 2015 Abstract. In the present paper, which forms the third part of a three-part series on an algorithmic

More information

HONDA-TATE THEOREM FOR ELLIPTIC CURVES

HONDA-TATE THEOREM FOR ELLIPTIC CURVES HONDA-TATE THEOREM FOR ELLIPTIC CURVES MIHRAN PAPIKIAN 1. Introduction These are the notes from a reading seminar for graduate students that I organised at Penn State during the 2011-12 academic year.

More information

Geometric Class Field Theory

Geometric Class Field Theory Geometric Class Field Theory Notes by Tony Feng for a talk by Bhargav Bhatt April 4, 2016 In the first half we will explain the unramified picture from the geometric point of view, and in the second half

More information

Jordan blocks. Defn. Let λ F, n Z +. The size n Jordan block with e-value λ is the n n upper triangular matrix. J n (λ) =

Jordan blocks. Defn. Let λ F, n Z +. The size n Jordan block with e-value λ is the n n upper triangular matrix. J n (λ) = Jordan blocks Aim lecture: Even over F = C, endomorphisms cannot always be represented by a diagonal matrix. We give Jordan s answer, to what is the best form of the representing matrix. Defn Let λ F,

More information

David Vogan. 30th Winter School of Geometry and Physics

David Vogan. 30th Winter School of Geometry and Physics 30th Winter School of Geometry and Physics Outline Structure of compact groups Root data and reductive groups Root data and representations of compact groups Weyl group action on virtual reps What the

More information

Part II Galois Theory

Part II Galois Theory Part II Galois Theory Theorems Based on lectures by C. Birkar Notes taken by Dexter Chua Michaelmas 2015 These notes are not endorsed by the lecturers, and I have modified them (often significantly) after

More information

1 Motivation. If X is a topological space and x X a point, then the fundamental group is defined as. the set of (pointed) morphisms from the circle

1 Motivation. If X is a topological space and x X a point, then the fundamental group is defined as. the set of (pointed) morphisms from the circle References are: [Szamuely] Galois Groups and Fundamental Groups [SGA1] Grothendieck, et al. Revêtements étales et groupe fondamental [Stacks project] The Stacks Project, https://stacks.math.columbia. edu/

More information

Hecke fields and its growth

Hecke fields and its growth Hecke fields and its growth Haruzo Hida Department of Mathematics, UCLA, Los Angeles, CA 90095-1555, U.S.A. Kyushu university talk on August 1, 2014 and PANT talk on August 5, 2014. The author is partially

More information

GALOIS DESCENT AND SEVERI-BRAUER VARIETIES. 1. Introduction

GALOIS DESCENT AND SEVERI-BRAUER VARIETIES. 1. Introduction GALOIS DESCENT AND SEVERI-BRAUER VARIETIES ERIC BRUSSEL CAL POLY MATHEMATICS 1. Introduction We say an algebraic object or property over a field k is arithmetic if it becomes trivial or vanishes after

More information

The Galois-Theoretic Kodaira-Spencer Morphism of an Elliptic Curve

The Galois-Theoretic Kodaira-Spencer Morphism of an Elliptic Curve The Galois-Theoretic Kodaira-Spencer Morphism of an Elliptic Curve Shinichi Mochizuki July 2000 Contents: 0. Introduction 1. Galois Actions on the Torsion Points 2. agrangian Galois Actions 2.1. Definition

More information

Math 429/581 (Advanced) Group Theory. Summary of Definitions, Examples, and Theorems by Stefan Gille

Math 429/581 (Advanced) Group Theory. Summary of Definitions, Examples, and Theorems by Stefan Gille Math 429/581 (Advanced) Group Theory Summary of Definitions, Examples, and Theorems by Stefan Gille 1 2 0. Group Operations 0.1. Definition. Let G be a group and X a set. A (left) operation of G on X is

More information

ESSENTIAL DIMENSION. Angelo Vistoli Scuola Normale Superiore. Joint work with Patrick Brosnan and Zinovy Reichstein University of British Columbia

ESSENTIAL DIMENSION. Angelo Vistoli Scuola Normale Superiore. Joint work with Patrick Brosnan and Zinovy Reichstein University of British Columbia ESSENTIAL DIMENSION Angelo Vistoli Scuola Normale Superiore Budapest, May 2008 Joint work with Patrick Brosnan and Zinovy Reichstein University of British Columbia Posted athttp://arxiv.org/abs/math.ag/0701903

More information

Tutorial on Differential Galois Theory III

Tutorial on Differential Galois Theory III Tutorial on Differential Galois Theory III T. Dyckerhoff Department of Mathematics University of Pennsylvania 02/14/08 / Oberflockenbach Outline Today s plan Monodromy and singularities Riemann-Hilbert

More information

Some algebraic number theory and the reciprocity map

Some algebraic number theory and the reciprocity map Some algebraic number theory and the reciprocity map Ervin Thiagalingam September 28, 2015 Motivation In Weinstein s paper, the main problem is to find a rule (reciprocity law) for when an irreducible

More information

数理解析研究所講究録別冊 = RIMS Kokyuroku Bessa (2011), B25:

数理解析研究所講究録別冊 = RIMS Kokyuroku Bessa (2011), B25: Non-existence of certain Galois rep Titletame inertia weight : A resume (Alg Related Topics 2009) Author(s) OZEKI, Yoshiyasu Citation 数理解析研究所講究録別冊 = RIMS Kokyuroku Bessa (2011), B25: 89-92 Issue Date 2011-04

More information

Part II Galois Theory

Part II Galois Theory Part II Galois Theory Definitions Based on lectures by C. Birkar Notes taken by Dexter Chua Michaelmas 2015 These notes are not endorsed by the lecturers, and I have modified them (often significantly)

More information

p-adic families of modular forms

p-adic families of modular forms April 3, 2009 Plan Background and Motivation Lecture 1 Background and Motivation Overconvergent p-adic modular forms The canonical subgroup and the U p operator Families of p-adic modular forms - Strategies

More information

Up to twist, there are only finitely many potentially p-ordinary abelian varieties over. conductor

Up to twist, there are only finitely many potentially p-ordinary abelian varieties over. conductor Up to twist, there are only finitely many potentially p-ordinary abelian varieties over Q of GL(2)-type with fixed prime-to-p conductor Haruzo Hida Department of Mathematics, UCLA, Los Angeles, CA 90095-1555,

More information

Lecture 6: Etale Fundamental Group

Lecture 6: Etale Fundamental Group Lecture 6: Etale Fundamental Group October 5, 2014 1 Review of the topological fundamental group and covering spaces 1.1 Topological fundamental group Suppose X is a path-connected topological space, and

More information

A GLIMPSE OF ALGEBRAIC K-THEORY: Eric M. Friedlander

A GLIMPSE OF ALGEBRAIC K-THEORY: Eric M. Friedlander A GLIMPSE OF ALGEBRAIC K-THEORY: Eric M. Friedlander During the first three days of September, 1997, I had the privilege of giving a series of five lectures at the beginning of the School on Algebraic

More information

On the Grothendieck Ring of a Hopf Algebra

On the Grothendieck Ring of a Hopf Algebra On the Grothendieck Ring of a Hopf Algebra H is a fin. dim l Hopf algebra over an alg. closed field k of char p 0, with augmentation ε, antipode S,.... (1) Grothendieck ring and character algebra The Grothendieck

More information

COUNTING MOD l SOLUTIONS VIA MODULAR FORMS

COUNTING MOD l SOLUTIONS VIA MODULAR FORMS COUNTING MOD l SOLUTIONS VIA MODULAR FORMS EDRAY GOINS AND L. J. P. KILFORD Abstract. [Something here] Contents 1. Introduction 1. Galois Representations as Generating Functions 1.1. Permutation Representation

More information

Isogeny invariance of the BSD formula

Isogeny invariance of the BSD formula Isogeny invariance of the BSD formula Bryden Cais August 1, 24 1 Introduction In these notes we prove that if f : A B is an isogeny of abelian varieties whose degree is relatively prime to the characteristic

More information

Diophantine geometry and non-abelian duality

Diophantine geometry and non-abelian duality Diophantine geometry and non-abelian duality Minhyong Kim Leiden, May, 2011 Diophantine geometry and abelian duality E: elliptic curve over a number field F. Kummer theory: E(F) Z p H 1 f (G,T p(e)) conjectured

More information

Non CM p-adic analytic families of modular forms

Non CM p-adic analytic families of modular forms Non CM p-adic analytic families of modular forms Haruzo Hida Department of Mathematics, UCLA, Los Angeles, CA 90095-1555, U.S.A. The author is partially supported by the NSF grant: DMS 1464106. Abstract:

More information

Representations of quivers

Representations of quivers Representations of quivers Gwyn Bellamy October 13, 215 1 Quivers Let k be a field. Recall that a k-algebra is a k-vector space A with a bilinear map A A A making A into a unital, associative ring. Notice

More information

Explicit Kummer Varieties for Hyperelliptic Curves of Genus 3

Explicit Kummer Varieties for Hyperelliptic Curves of Genus 3 Explicit Kummer Varieties for Hyperelliptic Curves of Genus 3 Michael Stoll Universität Bayreuth Théorie des nombres et applications CIRM, Luminy January 17, 2012 Application / Motivation We would like

More information

1 Fields and vector spaces

1 Fields and vector spaces 1 Fields and vector spaces In this section we revise some algebraic preliminaries and establish notation. 1.1 Division rings and fields A division ring, or skew field, is a structure F with two binary

More information

Moduli spaces of sheaves and the boson-fermion correspondence

Moduli spaces of sheaves and the boson-fermion correspondence Moduli spaces of sheaves and the boson-fermion correspondence Alistair Savage (alistair.savage@uottawa.ca) Department of Mathematics and Statistics University of Ottawa Joint work with Anthony Licata (Stanford/MPI)

More information

Galois Theory and Diophantine geometry ±11

Galois Theory and Diophantine geometry ±11 Galois Theory and Diophantine geometry ±11 Minhyong Kim Bordeaux, January, 2010 1 1. Some Examples 1.1 A Diophantine finiteness theorem: Let a, b, c, n Z and n 4. Then the equation ax n + by n = c has

More information

An extension of the LMO functor

An extension of the LMO functor An extension of the LMO functor Yuta Nozaki The Univ. of Tokyo December 23, 2014 VII Y. Nozaki (The Univ. of Tokyo) An extension of the LMO functor December 23, 2014 1 / 27 Introduction Contents 1 Introduction

More information

Top exterior powers in Iwasawa theory

Top exterior powers in Iwasawa theory joint with Ted Chinburg, Ralph Greenberg, Mahesh Kakde, Romyar Sharifi and Martin Taylor Maurice Auslander International Conference April 28, 2018 Iwasawa theory (started by Kenkichi Iwasawa 1950 s). Study

More information

Cover Page. The handle holds various files of this Leiden University dissertation.

Cover Page. The handle   holds various files of this Leiden University dissertation. Cover Page The handle http://hdl.handle.net/1887/20949 holds various files of this Leiden University dissertation. Author: Javan Peykar, Ariyan Title: Arakelov invariants of Belyi curves Issue Date: 2013-06-11

More information

GALOIS COHOMOLOGY GEUNHO GIM

GALOIS COHOMOLOGY GEUNHO GIM GALOIS COHOMOLOGY GEUNHO GIM Abstract. This note is based on the 3-hour presentation given in the student seminar on Fall 203. We will basically follow [HidMFG, Chapter IV] and [MilADT, Chapter I 0,, 2].

More information

A Note on Dormant Opers of Rank p 1 in Characteristic p

A Note on Dormant Opers of Rank p 1 in Characteristic p A Note on Dormant Opers of Rank p 1 in Characteristic p Yuichiro Hoshi May 2017 Abstract. In the present paper, we prove that the set of equivalence classes of dormant opers of rank p 1 over a projective

More information

SAMPLE TEX FILE ZAJJ DAUGHERTY

SAMPLE TEX FILE ZAJJ DAUGHERTY SAMPLE TEX FILE ZAJJ DAUGHERTY Contents. What is the partition algebra?.. Graphs and equivalence relations.. Diagrams and their compositions.. The partition algebra. Combinatorial representation theory:

More information

Homework 2 - Math 603 Fall 05 Solutions

Homework 2 - Math 603 Fall 05 Solutions Homework 2 - Math 603 Fall 05 Solutions 1. (a): In the notation of Atiyah-Macdonald, Prop. 5.17, we have B n j=1 Av j. Since A is Noetherian, this implies that B is f.g. as an A-module. (b): By Noether

More information

Quadratic reciprocity (after Weil) 1. Standard set-up and Poisson summation

Quadratic reciprocity (after Weil) 1. Standard set-up and Poisson summation (December 19, 010 Quadratic reciprocity (after Weil Paul Garrett garrett@math.umn.edu http://www.math.umn.edu/ garrett/ I show that over global fields k (characteristic not the quadratic norm residue symbol

More information

FUNCTORS AND ADJUNCTIONS. 1. Functors

FUNCTORS AND ADJUNCTIONS. 1. Functors FUNCTORS AND ADJUNCTIONS Abstract. Graphs, quivers, natural transformations, adjunctions, Galois connections, Galois theory. 1.1. Graph maps. 1. Functors 1.1.1. Quivers. Quivers generalize directed graphs,

More information

The Grothendieck-Katz Conjecture for certain locally symmetric varieties

The Grothendieck-Katz Conjecture for certain locally symmetric varieties The Grothendieck-Katz Conjecture for certain locally symmetric varieties Benson Farb and Mark Kisin August 20, 2008 Abstract Using Margulis results on lattices in semi-simple Lie groups, we prove the Grothendieck-

More information

Iwasawa algebras and duality

Iwasawa algebras and duality Iwasawa algebras and duality Romyar Sharifi University of Arizona March 6, 2013 Idea of the main result Goal of Talk (joint with Meng Fai Lim) Provide an analogue of Poitou-Tate duality which 1 takes place

More information

Reductive subgroup schemes of a parahoric group scheme

Reductive subgroup schemes of a parahoric group scheme Reductive subgroup schemes of a parahoric group scheme George McNinch Department of Mathematics Tufts University Medford Massachusetts USA June 2018 Contents 1 Levi factors 2 Parahoric group schemes 3

More information

On the modular curve X 0 (23)

On the modular curve X 0 (23) On the modular curve X 0 (23) René Schoof Abstract. The Jacobian J 0(23) of the modular curve X 0(23) is a semi-stable abelian variety over Q with good reduction outside 23. It is simple. We prove that

More information

QUANTIZATION VIA DIFFERENTIAL OPERATORS ON STACKS

QUANTIZATION VIA DIFFERENTIAL OPERATORS ON STACKS QUANTIZATION VIA DIFFERENTIAL OPERATORS ON STACKS SAM RASKIN 1. Differential operators on stacks 1.1. We will define a D-module of differential operators on a smooth stack and construct a symbol map when

More information

INTEGER VALUED POLYNOMIALS AND LUBIN-TATE FORMAL GROUPS

INTEGER VALUED POLYNOMIALS AND LUBIN-TATE FORMAL GROUPS INTEGER VALUED POLYNOMIALS AND LUBIN-TATE FORMAL GROUPS EHUD DE SHALIT AND ERAN ICELAND Abstract. If R is an integral domain and K is its field of fractions, we let Int(R) stand for the subring of K[x]

More information

1 Notations and Statement of the Main Results

1 Notations and Statement of the Main Results An introduction to algebraic fundamental groups 1 Notations and Statement of the Main Results Throughout the talk, all schemes are locally Noetherian. All maps are of locally finite type. There two main

More information

REVIEW OF GALOIS DEFORMATIONS

REVIEW OF GALOIS DEFORMATIONS REVIEW OF GALOIS DEFORMATIONS SIMON RUBINSTEIN-SALZEDO 1. Deformations and framed deformations We'll review the study of Galois deformations. Here's the setup. Let G be a pronite group, and let ρ : G GL

More information