2M2. Fourier Series Prof Bill Lionheart
|
|
- Christal Palmer
- 5 years ago
- Views:
Transcription
1 M. Fourier Series Prof Bi Lionheart 1. The Fourier series of the periodic function f(x) with period has the form f(x) = a 0 + ( a n cos πnx + b n sin πnx ). Here the rea numbers a n, b n are caed the Fourier coefficients of the function f(x). A function f is periodic with period if f(x + ) = f(x) for a x, or specified just on a segment of ength, such as [, ] or [0, ]. In the atter case f(x) can be extended to a periodic function of period. Given a periodic function f(x) (with period ), its Fourier coefficients a n, b n can be found by the foowing formuae: a 0 = 1 f(x) dx, and for n > 0. a n = 1 b n = 1 f(x) cos πnx f(x) sin πnx dx, dx. A function is caed even if f( x) = f(x) for a x. Simiary, a function is caed odd if f( x) = f(x) for a x. Exampes: f(x) = x is odd (it is not a periodic function!); f(x) = x is even (again not periodic); f(x) = cos x is even; f(x) = sin x is odd. This makes sense ony for functions defined on the whoe rea ine. If a function is defined on a segment [0, ], it can be extended to a periodic even function or to a periodic odd function (both with period ), by setting f( x) = f(x) or f( x) = f(x) respectivey, for < x < 0, and then extending by periodicity. If f(x) is an even periodic function, then its Fourier expansion contains ony cosines (a coefficients b n are zero). If f(x) is an odd periodic function, 1
2 then its Fourier expansion contains ony sines (a coefficients a n, incuding a 0, are zero). 3. Dirichet Theorem. Suppose a periodic function f(x) within one period (i.e., on an arbitrary segment of ength equa to the period) has ony a finite number of finite jumps, is continuous at a other points and has ony a finite number of maxima and minima. Then its Fourier series converges either to f(x) if f is continuous at x or to the midde vaue 1 ( f(x 0)) + f(x + 0) ) if there is a jump. Here f(x 0) and f(x + 0) denote eft and right imits, respectivey. 4. Fourier series are best understood in the foowing geometrica anguage. Periodic functions f(x) (with a fixed period ) are considered as anaogs of vectors. The Fourier expansion of a function f(x) is considered as an anaog of the expansion a = a 1 i + a j + a 3 k of a vector a. The scaar product (or inner product) of two functions is defined as (f, g) = f(x)g(x) dx. In fact, the integra can be taken over any segment of ength, e.g., over [0, ]. It is the anaog of the dot product of vectors: a b, which is often denoted aso as (a, b). The foowing reations for the system of functions 1, cos πx, sin πx, cos πx, sin πx,... are caed orthogonaity: cos πnx sin πnx cos πmx dx = 0 cos πnx sin πmx sin πmx dx = 0 if n m dx = 0 if n m for a n and m. They are anaogous to the fact that i, j, k are mutuay perpendicuar. Arbitrary two functions f and g are caed orthogona if their scaar product vanishes: (f, g) = 0. The norm of a function f(x) is the
3 square root of its scaar square : f = (f, f) = (f(x)) dx. It is the anaog of the magnitude or ength of a vector. Exampe. One can easiy find that and that cos πnx sin πnx 1 = (1, 1) = = (cos πnx = (sin πnx dx =, cos πnx ) =, sin πnx ) = cos πnx dx = sin πnx dx = (for any number n). One shoud compare it with i, j, k being unit vectors, i.e., of norm or magnitude 1. The above formuae for the Fourier coefficients foow from here and the orthogonaity reations. Parseva Theorem. For a -periodic function f(x) its norm can be expressed via the Fourier coefficients as foows: f = a 0 + ( ) a n + b n. It is the anaog of the Pythagoras theorem for vectors: a = a 1+a +a 3 where a = a 1 i + a j + a 3 k. The appearance of extra coefficients such as or is expained by the basis eements being not unit (compared with i, j, k). Fourier expansions can be best understood in the sense of convergence in mean : for any function f(x) with integrabe square, its Fourier series converges to f(x) in the sense of the above-defined norm: f S N 0 when N 3
4 where S N is the partia Fourier sum for f(x): S N (x) = a 0 + N ( a n cos πnx + b n sin πnx ). 5. A the above was for functions taking vaues in rea numbers. It aso hods for compex-vaued functions, but the definition of the scaar product shoud be modified by incuding compex conjugation: In particuar (f, g) = f = (f, f) = f(x)g(x) dx. f(x) dx. Reca the Euer formua connecting trigonometric functions and exponentias: e iα = cos α + i sin α, from where we have cos α = 1 (eiα + e iα ), sin α = 1 i (eiα e iα ). Ceary, a Fourier series can be rewritten in terms of compex exponentias. For a given -periodic function f(x), rea or compex, its Fourier series (or Fourier expansion) in the compex form has the appearance: f(x) = + n= c n e iπnx. (Compared with it, the Fourier series in sines and cosines for a rea function f(x) wi be referred to as the Fourier series in the rea form.) The coefficients c n, where n = 0, ±1, ±,..., can be found by the formuae c n = 1 f(x)e iπnx This foows from the orthogonaity: (e iπnx, e iπmx ) = e iπnx dx = 1 (f, e iπnx ). e iπmx dx = 0 for n m 4
5 (proof is very simpe) and the equaity e iπnx = e iπnx e iπnx dx = for a n (the orthogonaity reations for sines and cosines immediatey foow from the orthogonaity of exponentias). Parseva Theorem in the compex form. For a -periodic rea or compex function f(x) its norm can be expressed via the Fourier coefficients c n as foows: f = + n= c n. Notice that c n are in genera compex, so c n = c n c n. Using Euer s formua, the Fourier expansion in the compex form can be expressed in terms of sines and cosines, and back. If the function f(x) is rea, then the coefficients of its Fourier expansion in the compex form satisfy the extra condition c n = c n for a n, and they are reated with the coefficients of the Fourier expansion in the rea form as foows: and c 0 = a 0 c n = 1 (a n ib n ) for n > 0 c n = 1 (a n + ib n ) for n < 0, where n > 0. a 0 = c 0 a n = c n + c n b n = i(c n c n ) 5
Course 2BA1, Section 11: Periodic Functions and Fourier Series
Course BA, 8 9 Section : Periodic Functions and Fourier Series David R. Wikins Copyright c David R. Wikins 9 Contents Periodic Functions and Fourier Series 74. Fourier Series of Even and Odd Functions...........
More informationb n n=1 a n cos nx (3) n=1
Fourier Anaysis The Fourier series First some terminoogy: a function f(x) is periodic if f(x ) = f(x) for a x for some, if is the smaest such number, it is caed the period of f(x). It is even if f( x)
More informationMath 124B January 17, 2012
Math 124B January 17, 212 Viktor Grigoryan 3 Fu Fourier series We saw in previous ectures how the Dirichet and Neumann boundary conditions ead to respectivey sine and cosine Fourier series of the initia
More informationWeek 6 Lectures, Math 6451, Tanveer
Fourier Series Week 6 Lectures, Math 645, Tanveer In the context of separation of variabe to find soutions of PDEs, we encountered or and in other cases f(x = f(x = a 0 + f(x = a 0 + b n sin nπx { a n
More informationAssignment 7 Due Tuessday, March 29, 2016
Math 45 / AMCS 55 Dr. DeTurck Assignment 7 Due Tuessday, March 9, 6 Topics for this week Convergence of Fourier series; Lapace s equation and harmonic functions: basic properties, compuations on rectanges
More informationLecture 11. Fourier transform
Lecture. Fourier transform Definition and main resuts Let f L 2 (R). The Fourier transform of a function f is a function f(α) = f(x)t iαx dx () The normaized Fourier transform of f is a function R ˆf =
More informationMATH 172: MOTIVATION FOR FOURIER SERIES: SEPARATION OF VARIABLES
MATH 172: MOTIVATION FOR FOURIER SERIES: SEPARATION OF VARIABLES Separation of variabes is a method to sove certain PDEs which have a warped product structure. First, on R n, a inear PDE of order m is
More informationLecture Notes for Math 251: ODE and PDE. Lecture 32: 10.2 Fourier Series
Lecture Notes for Math 251: ODE and PDE. Lecture 32: 1.2 Fourier Series Shawn D. Ryan Spring 212 Last Time: We studied the heat equation and the method of Separation of Variabes. We then used Separation
More informationLecture Notes 4: Fourier Series and PDE s
Lecture Notes 4: Fourier Series and PDE s 1. Periodic Functions A function fx defined on R is caed a periodic function if there exists a number T > such that fx + T = fx, x R. 1.1 The smaest number T for
More information6 Wave Equation on an Interval: Separation of Variables
6 Wave Equation on an Interva: Separation of Variabes 6.1 Dirichet Boundary Conditions Ref: Strauss, Chapter 4 We now use the separation of variabes technique to study the wave equation on a finite interva.
More informationMath 124B January 31, 2012
Math 124B January 31, 212 Viktor Grigoryan 7 Inhomogeneous boundary vaue probems Having studied the theory of Fourier series, with which we successfuy soved boundary vaue probems for the homogeneous heat
More information4 1-D Boundary Value Problems Heat Equation
4 -D Boundary Vaue Probems Heat Equation The main purpose of this chapter is to study boundary vaue probems for the heat equation on a finite rod a x b. u t (x, t = ku xx (x, t, a < x < b, t > u(x, = ϕ(x
More informationC. Fourier Sine Series Overview
12 PHILIP D. LOEWEN C. Fourier Sine Series Overview Let some constant > be given. The symboic form of the FSS Eigenvaue probem combines an ordinary differentia equation (ODE) on the interva (, ) with a
More informationWave Equation Dirichlet Boundary Conditions
Wave Equation Dirichet Boundary Conditions u tt x, t = c u xx x, t, < x 1 u, t =, u, t = ux, = fx u t x, = gx Look for simpe soutions in the form ux, t = XxT t Substituting into 13 and dividing
More information4 Separation of Variables
4 Separation of Variabes In this chapter we describe a cassica technique for constructing forma soutions to inear boundary vaue probems. The soution of three cassica (paraboic, hyperboic and eiptic) PDE
More informationLECTURE NOTES 8 THE TRACELESS SYMMETRIC TENSOR EXPANSION AND STANDARD SPHERICAL HARMONICS
MASSACHUSETTS INSTITUTE OF TECHNOLOGY Physics Department Physics 8.07: Eectromagnetism II October, 202 Prof. Aan Guth LECTURE NOTES 8 THE TRACELESS SYMMETRIC TENSOR EXPANSION AND STANDARD SPHERICAL HARMONICS
More information221B Lecture Notes Notes on Spherical Bessel Functions
Definitions B Lecture Notes Notes on Spherica Besse Functions We woud ike to sove the free Schrödinger equation [ h d r R(r) = h k R(r). () m r dr r m R(r) is the radia wave function ψ( x) = R(r)Y m (θ,
More informationarxiv: v1 [math.fa] 23 Aug 2018
An Exact Upper Bound on the L p Lebesgue Constant and The -Rényi Entropy Power Inequaity for Integer Vaued Random Variabes arxiv:808.0773v [math.fa] 3 Aug 08 Peng Xu, Mokshay Madiman, James Mebourne Abstract
More information1D Heat Propagation Problems
Chapter 1 1D Heat Propagation Probems If the ambient space of the heat conduction has ony one dimension, the Fourier equation reduces to the foowing for an homogeneous body cρ T t = T λ 2 + Q, 1.1) x2
More informationMA 201: Partial Differential Equations Lecture - 10
MA 201: Partia Differentia Equations Lecture - 10 Separation of Variabes, One dimensiona Wave Equation Initia Boundary Vaue Probem (IBVP) Reca: A physica probem governed by a PDE may contain both boundary
More information14 Separation of Variables Method
14 Separation of Variabes Method Consider, for exampe, the Dirichet probem u t = Du xx < x u(x, ) = f(x) < x < u(, t) = = u(, t) t > Let u(x, t) = T (t)φ(x); now substitute into the equation: dt
More informationSome Measures for Asymmetry of Distributions
Some Measures for Asymmetry of Distributions Georgi N. Boshnakov First version: 31 January 2006 Research Report No. 5, 2006, Probabiity and Statistics Group Schoo of Mathematics, The University of Manchester
More informationFFTs in Graphics and Vision. Spherical Convolution and Axial Symmetry Detection
FFTs in Graphics and Vision Spherica Convoution and Axia Symmetry Detection Outine Math Review Symmetry Genera Convoution Spherica Convoution Axia Symmetry Detection Math Review Symmetry: Given a unitary
More informationStrauss PDEs 2e: Section Exercise 2 Page 1 of 12. For problem (1), complete the calculation of the series in case j(t) = 0 and h(t) = e t.
Strauss PDEs e: Section 5.6 - Exercise Page 1 of 1 Exercise For probem (1, compete the cacuation of the series in case j(t = and h(t = e t. Soution With j(t = and h(t = e t, probem (1 on page 147 becomes
More informationORTHOGONAL MULTI-WAVELETS FROM MATRIX FACTORIZATION
J. Korean Math. Soc. 46 2009, No. 2, pp. 281 294 ORHOGONAL MLI-WAVELES FROM MARIX FACORIZAION Hongying Xiao Abstract. Accuracy of the scaing function is very crucia in waveet theory, or correspondingy,
More informationRELATIONSHIP BETWEEN QUATERNION LINEAR CANONICAL AND QUATERNION FOURIER TRANSFORMS
Proceedings of the 04 Internationa Conference on Waveet Anaysis and Pattern ecognition, Lanzhou, 3-6 Juy, 04 ELATIONSHIP BETWEEN QUATENION LINEA CANONICAL AND QUATENION FOUIE TANSFOMS MAWADI BAHI, YUICHI
More informationFourier Series. 10 (D3.9) Find the Cesàro sum of the series. 11 (D3.9) Let a and b be real numbers. Under what conditions does a series of the form
Exercises Fourier Anaysis MMG70, Autumn 007 The exercises are taken from: Version: Monday October, 007 DXY Section XY of H F Davis, Fourier Series and orthogona functions EÖ Some exercises from earier
More informationPartial permutation decoding for MacDonald codes
Partia permutation decoding for MacDonad codes J.D. Key Department of Mathematics and Appied Mathematics University of the Western Cape 7535 Bevie, South Africa P. Seneviratne Department of Mathematics
More informationTHE THREE POINT STEINER PROBLEM ON THE FLAT TORUS: THE MINIMAL LUNE CASE
THE THREE POINT STEINER PROBLEM ON THE FLAT TORUS: THE MINIMAL LUNE CASE KATIE L. MAY AND MELISSA A. MITCHELL Abstract. We show how to identify the minima path network connecting three fixed points on
More informationProduct Cosines of Angles between Subspaces
Product Cosines of Anges between Subspaces Jianming Miao and Adi Ben-Israe Juy, 993 Dedicated to Professor C.R. Rao on his 75th birthday Let Abstract cos{l,m} : i cos θ i, denote the product of the cosines
More informationBASIC NOTIONS AND RESULTS IN TOPOLOGY. 1. Metric spaces. Sets with finite diameter are called bounded sets. For x X and r > 0 the set
BASIC NOTIONS AND RESULTS IN TOPOLOGY 1. Metric spaces A metric on a set X is a map d : X X R + with the properties: d(x, y) 0 and d(x, y) = 0 x = y, d(x, y) = d(y, x), d(x, y) d(x, z) + d(z, y), for a
More informationPHYS 110B - HW #1 Fall 2005, Solutions by David Pace Equations referenced as Eq. # are from Griffiths Problem statements are paraphrased
PHYS 110B - HW #1 Fa 2005, Soutions by David Pace Equations referenced as Eq. # are from Griffiths Probem statements are paraphrased [1.] Probem 6.8 from Griffiths A ong cyinder has radius R and a magnetization
More informationOn Some Basic Properties of Geometric Real Sequences
On Some Basic Properties of eometric Rea Sequences Khirod Boruah Research Schoar, Department of Mathematics, Rajiv andhi University Rono His, Doimukh-791112, Arunacha Pradesh, India Abstract Objective
More informationRestricted weak type on maximal linear and multilinear integral maps.
Restricted weak type on maxima inear and mutiinear integra maps. Oscar Basco Abstract It is shown that mutiinear operators of the form T (f 1,..., f k )(x) = R K(x, y n 1,..., y k )f 1 (y 1 )...f k (y
More information1 Heat Equation Dirichlet Boundary Conditions
Chapter 3 Heat Exampes in Rectanges Heat Equation Dirichet Boundary Conditions u t (x, t) = ku xx (x, t), < x (.) u(, t) =, u(, t) = u(x, ) = f(x). Separate Variabes Look for simpe soutions in the
More informationMA 201: Partial Differential Equations Lecture - 11
MA 201: Partia Differentia Equations Lecture - 11 Heat Equation Heat conduction in a thin rod The IBVP under consideration consists of: The governing equation: u t = αu xx, (1) where α is the therma diffusivity.
More informationA Two-Parameter Trigonometric Series
A Two-Parameter Trigonometric Series Xiang-Qian Chang Xiang.Chang@bos.mcphs.edu Massachusetts Coege of Pharmacy and Heath Sciences Boston MA 25 Let us consider the foowing dua questions. A. Givenafunction
More informationLecture Notes for Math 251: ODE and PDE. Lecture 34: 10.7 Wave Equation and Vibrations of an Elastic String
ecture Notes for Math 251: ODE and PDE. ecture 3: 1.7 Wave Equation and Vibrations of an Eastic String Shawn D. Ryan Spring 212 ast Time: We studied other Heat Equation probems with various other boundary
More informationLECTURE NOTES 9 TRACELESS SYMMETRIC TENSOR APPROACH TO LEGENDRE POLYNOMIALS AND SPHERICAL HARMONICS
MASSACHUSETTS INSTITUTE OF TECHNOLOGY Physics Department Physics 8.07: Eectromagnetism II October 7, 202 Prof. Aan Guth LECTURE NOTES 9 TRACELESS SYMMETRIC TENSOR APPROACH TO LEGENDRE POLYNOMIALS AND SPHERICAL
More informationMAT 167: Advanced Linear Algebra
< Proem 1 (15 pts) MAT 167: Advanced Linear Agera Fina Exam Soutions (a) (5 pts) State the definition of a unitary matrix and expain the difference etween an orthogona matrix and an unitary matrix. Soution:
More informationDavid Eigen. MA112 Final Paper. May 10, 2002
David Eigen MA112 Fina Paper May 1, 22 The Schrodinger equation describes the position of an eectron as a wave. The wave function Ψ(t, x is interpreted as a probabiity density for the position of the eectron.
More informationCS229 Lecture notes. Andrew Ng
CS229 Lecture notes Andrew Ng Part IX The EM agorithm In the previous set of notes, we taked about the EM agorithm as appied to fitting a mixture of Gaussians. In this set of notes, we give a broader view
More informationSEMINAR 2. PENDULUMS. V = mgl cos θ. (2) L = T V = 1 2 ml2 θ2 + mgl cos θ, (3) d dt ml2 θ2 + mgl sin θ = 0, (4) θ + g l
Probem 7. Simpe Penduum SEMINAR. PENDULUMS A simpe penduum means a mass m suspended by a string weightess rigid rod of ength so that it can swing in a pane. The y-axis is directed down, x-axis is directed
More informationCHAPTER 2 AN INTRODUCTION TO WAVELET ANALYSIS
CHAPTER 2 AN INTRODUCTION TO WAVELET ANALYSIS [This chapter is based on the ectures of Professor D.V. Pai, Department of Mathematics, Indian Institute of Technoogy Bombay, Powai, Mumbai - 400 076, India.]
More informationSCHOOL OF MATHEMATICS AND STATISTICS. Mathematics II (Materials) Section A. Find the general solution of the equation
Data provided: Formua Sheet MAS250 SCHOOL OF MATHEMATICS AND STATISTICS Mathematics II (Materias Autumn Semester 204 5 2 hours Marks wi be awarded for answers to a questions in Section A, and for your
More informationTransforms and Boundary Value Problems
Transforms and Boundary Vaue Probems (For B.Tech Students (Third/Fourth/Fifth Semester Soved University Questions Papers Prepared by Dr. V. SUVITHA Department of Mathematics, SRMIST Kattankuathur 6. CONTENTS
More informationPhysics 505 Fall 2007 Homework Assignment #5 Solutions. Textbook problems: Ch. 3: 3.13, 3.17, 3.26, 3.27
Physics 55 Fa 7 Homework Assignment #5 Soutions Textook proems: Ch. 3: 3.3, 3.7, 3.6, 3.7 3.3 Sove for the potentia in Proem 3., using the appropriate Green function otained in the text, and verify that
More informationFOURIER SERIES ON ANY INTERVAL
FOURIER SERIES ON ANY INTERVAL Overview We have spent considerabe time earning how to compute Fourier series for functions that have a period of 2p on the interva (-p,p). We have aso seen how Fourier series
More informationHigher dimensional PDEs and multidimensional eigenvalue problems
Higher dimensiona PEs and mutidimensiona eigenvaue probems 1 Probems with three independent variabes Consider the prototypica equations u t = u (iffusion) u tt = u (W ave) u zz = u (Lapace) where u = u
More informationMore Scattering: the Partial Wave Expansion
More Scattering: the Partia Wave Expansion Michae Fower /7/8 Pane Waves and Partia Waves We are considering the soution to Schrödinger s equation for scattering of an incoming pane wave in the z-direction
More informationHomogeneity properties of subadditive functions
Annaes Mathematicae et Informaticae 32 2005 pp. 89 20. Homogeneity properties of subadditive functions Pá Burai and Árpád Száz Institute of Mathematics, University of Debrecen e-mai: buraip@math.kte.hu
More informationLecture 6: Moderately Large Deflection Theory of Beams
Structura Mechanics 2.8 Lecture 6 Semester Yr Lecture 6: Moderatey Large Defection Theory of Beams 6.1 Genera Formuation Compare to the cassica theory of beams with infinitesima deformation, the moderatey
More information$, (2.1) n="# #. (2.2)
Chapter. Eectrostatic II Notes: Most of the materia presented in this chapter is taken from Jackson, Chap.,, and 4, and Di Bartoo, Chap... Mathematica Considerations.. The Fourier series and the Fourier
More informationWMS. MA250 Introduction to Partial Differential Equations. Revision Guide. Written by Matthew Hutton and David McCormick
WMS MA25 Introduction to Partia Differentia Equations Revision Guide Written by Matthew Hutton and David McCormick WMS ii MA25 Introduction to Partia Differentia Equations Contents Introduction 1 1 First-Order
More informationModule 22: Simple Harmonic Oscillation and Torque
Modue : Simpe Harmonic Osciation and Torque.1 Introduction We have aready used Newton s Second Law or Conservation of Energy to anayze systems ike the boc-spring system that osciate. We sha now use torque
More informationOn the Goal Value of a Boolean Function
On the Goa Vaue of a Booean Function Eric Bach Dept. of CS University of Wisconsin 1210 W. Dayton St. Madison, WI 53706 Lisa Heerstein Dept of CSE NYU Schoo of Engineering 2 Metrotech Center, 10th Foor
More informationPhysics 505 Fall Homework Assignment #4 Solutions
Physics 505 Fa 2005 Homework Assignment #4 Soutions Textbook probems: Ch. 3: 3.4, 3.6, 3.9, 3.0 3.4 The surface of a hoow conducting sphere of inner radius a is divided into an even number of equa segments
More informationFourier series. Part - A
Fourier series Part - A 1.Define Dirichet s conditions Ans: A function defined in c x c + can be expanded as an infinite trigonometric series of the form a + a n cos nx n 1 + b n sin nx, provided i) f
More informationf xx g dx, (5) The point (i) is straightforward. Let us check the point (ii). Doing the integral by parts, we get 1 f g xx dx = f g x 1 0 f xg x dx =
Problem 19. Consider the heat equation u t = u xx, (1) u = u(x, t), x [, 1], with the boundary conditions (note the derivative in the first one) u x (, t) =, u(1, t) = (2) and the initial condition u(x,
More informationV.B The Cluster Expansion
V.B The Custer Expansion For short range interactions, speciay with a hard core, it is much better to repace the expansion parameter V( q ) by f( q ) = exp ( βv( q )), which is obtained by summing over
More informationFactorization of Cyclotomic Polynomials with Quadratic Radicals in the Coefficients
Advances in Pure Mathematics, 07, 7, 47-506 http://www.scirp.org/journa/apm ISSN Onine: 60-0384 ISSN Print: 60-0368 Factoriation of Cycotomic Poynomias with Quadratic Radicas in the Coefficients Afred
More informationPhysics 566: Quantum Optics Quantization of the Electromagnetic Field
Physics 566: Quantum Optics Quantization of the Eectromagnetic Fied Maxwe's Equations and Gauge invariance In ecture we earned how to quantize a one dimensiona scaar fied corresponding to vibrations on
More informationarxiv: v1 [math-ph] 12 Feb 2016
Zeros of Lattice Sums: 2. A Geometry for the Generaised Riemann Hypothesis R.C. McPhedran, Schoo of Physics, University of Sydney, Sydney, NSW Austraia 2006. arxiv:1602.06330v1 [math-ph] 12 Feb 2016 The
More informationSupplementary Appendix (not for publication) for: The Value of Network Information
Suppementary Appendix not for pubication for: The Vaue of Network Information Itay P. Fainmesser and Andrea Gaeotti September 6, 03 This appendix incudes the proof of Proposition from the paper "The Vaue
More informationPhysics 116C Helmholtz s and Laplace s Equations in Spherical Polar Coordinates: Spherical Harmonics and Spherical Bessel Functions
Physics 116C Hemhotz s an Lapace s Equations in Spherica Poar Coorinates: Spherica Harmonics an Spherica Besse Functions Peter Young Date: October 28, 2013) I. HELMHOLTZ S EQUATION As iscusse in cass,
More informationGeneralized Bell polynomials and the combinatorics of Poisson central moments
Generaized Be poynomias and the combinatorics of Poisson centra moments Nicoas Privaut Division of Mathematica Sciences Schoo of Physica and Mathematica Sciences Nanyang Technoogica University SPMS-MAS-05-43,
More informationProblem set 6 The Perron Frobenius theorem.
Probem set 6 The Perron Frobenius theorem. Math 22a4 Oct 2 204, Due Oct.28 In a future probem set I want to discuss some criteria which aow us to concude that that the ground state of a sef-adjoint operator
More informationPhysics 506 Winter 2006 Homework Assignment #6 Solutions
Physics 506 Winter 006 Homework Assignment #6 Soutions Textbook probems: Ch. 10: 10., 10.3, 10.7, 10.10 10. Eectromagnetic radiation with eiptic poarization, described (in the notation of Section 7. by
More informationThe distribution of the number of nodes in the relative interior of the typical I-segment in homogeneous planar anisotropic STIT Tessellations
Comment.Math.Univ.Caroin. 51,3(21) 53 512 53 The distribution of the number of nodes in the reative interior of the typica I-segment in homogeneous panar anisotropic STIT Tesseations Christoph Thäe Abstract.
More informationAPPENDIX C FLEXING OF LENGTH BARS
Fexing of ength bars 83 APPENDIX C FLEXING OF LENGTH BARS C.1 FLEXING OF A LENGTH BAR DUE TO ITS OWN WEIGHT Any object ying in a horizonta pane wi sag under its own weight uness it is infinitey stiff or
More informationV.B The Cluster Expansion
V.B The Custer Expansion For short range interactions, speciay with a hard core, it is much better to repace the expansion parameter V( q ) by f(q ) = exp ( βv( q )) 1, which is obtained by summing over
More informationNotes: Most of the material presented in this chapter is taken from Jackson, Chap. 2, 3, and 4, and Di Bartolo, Chap. 2. 2π nx i a. ( ) = G n.
Chapter. Eectrostatic II Notes: Most of the materia presented in this chapter is taken from Jackson, Chap.,, and 4, and Di Bartoo, Chap... Mathematica Considerations.. The Fourier series and the Fourier
More informationVolume 13, MAIN ARTICLES
Voume 13, 2009 1 MAIN ARTICLES THE BASIC BVPs OF THE THEORY OF ELASTIC BINARY MIXTURES FOR A HALF-PLANE WITH CURVILINEAR CUTS Bitsadze L. I. Vekua Institute of Appied Mathematics of Iv. Javakhishvii Tbiisi
More informationMath 124B January 24, 2012
Mth 24B Jnury 24, 22 Viktor Grigoryn 5 Convergence of Fourier series Strting from the method of seprtion of vribes for the homogeneous Dirichet nd Neumnn boundry vue probems, we studied the eigenvue probem
More informationCompletion. is dense in H. If V is complete, then U(V) = H.
Competion Theorem 1 (Competion) If ( V V ) is any inner product space then there exists a Hibert space ( H H ) and a map U : V H such that (i) U is 1 1 (ii) U is inear (iii) UxUy H xy V for a xy V (iv)
More informationAnalysis of Emerson s Multiple Model Interpolation Estimation Algorithms: The MIMO Case
Technica Report PC-04-00 Anaysis of Emerson s Mutipe Mode Interpoation Estimation Agorithms: The MIMO Case João P. Hespanha Dae E. Seborg University of Caifornia, Santa Barbara February 0, 004 Anaysis
More informationEECS 117 Homework Assignment 3 Spring ω ω. ω ω. ω ω. Using the values of the inductance and capacitance, the length of 2 cm corresponds 1.5π.
EES 7 Homework Assignment Sprg 4. Suppose the resonant frequency is equa to ( -.5. The oad impedance is If, is equa to ( ( The ast equaity hods because ( -.5. Furthermore, ( Usg the vaues of the ductance
More informationRadiation Fields. Lecture 12
Radiation Fieds Lecture 12 1 Mutipoe expansion Separate Maxwe s equations into two sets of equations, each set separatey invoving either the eectric or the magnetic fied. After remova of the time dependence
More informationarxiv: v1 [hep-th] 10 Dec 2018
Casimir energy of an open string with ange-dependent boundary condition A. Jahan 1 and I. Brevik 2 1 Research Institute for Astronomy and Astrophysics of Maragha (RIAAM, Maragha, Iran 2 Department of Energy
More informationSeparation of Variables and a Spherical Shell with Surface Charge
Separation of Variabes and a Spherica She with Surface Charge In cass we worked out the eectrostatic potentia due to a spherica she of radius R with a surface charge density σθ = σ cos θ. This cacuation
More informationRiemannian geometry of noncommutative surfaces
JOURNAL OF MATHEMATICAL PHYSICS 49, 073511 2008 Riemannian geometry of noncommutative surfaces M. Chaichian, 1,a A. Tureanu, 1,b R. B. Zhang, 2,c and Xiao Zhang 3,d 1 Department of Physica Sciences, University
More informationMat 1501 lecture notes, penultimate installment
Mat 1501 ecture notes, penutimate instament 1. bounded variation: functions of a singe variabe optiona) I beieve that we wi not actuay use the materia in this section the point is mainy to motivate the
More informationGauss Law. 2. Gauss s Law: connects charge and field 3. Applications of Gauss s Law
Gauss Law 1. Review on 1) Couomb s Law (charge and force) 2) Eectric Fied (fied and force) 2. Gauss s Law: connects charge and fied 3. Appications of Gauss s Law Couomb s Law and Eectric Fied Couomb s
More informationTHINKING IN PYRAMIDS
ECS 178 Course Notes THINKING IN PYRAMIDS Kenneth I. Joy Institute for Data Anaysis and Visuaization Department of Computer Science University of Caifornia, Davis Overview It is frequenty usefu to think
More informationSmoothness equivalence properties of univariate subdivision schemes and their projection analogues
Numerische Mathematik manuscript No. (wi be inserted by the editor) Smoothness equivaence properties of univariate subdivision schemes and their projection anaogues Phiipp Grohs TU Graz Institute of Geometry
More informationCONGRUENCES. 1. History
CONGRUENCES HAO BILLY LEE Abstract. These are notes I created for a seminar tak, foowing the papers of On the -adic Representations and Congruences for Coefficients of Moduar Forms by Swinnerton-Dyer and
More informationVibrations of Structures
Vibrations of Structures Modue I: Vibrations of Strings and Bars Lesson : The Initia Vaue Probem Contents:. Introduction. Moda Expansion Theorem 3. Initia Vaue Probem: Exampes 4. Lapace Transform Method
More informationSampling with Bessel Functions
amping with Besse Functions K.I. Kou, T. Qian and F. ommen Abstract. The paper deas with samping of σ-bandimited functions in R m with Cifford-vaued, where bandimitedness means that the spectrum is contained
More informationarxiv: v1 [math.co] 12 May 2013
EMBEDDING CYCLES IN FINITE PLANES FELIX LAZEBNIK, KEITH E. MELLINGER, AND SCAR VEGA arxiv:1305.2646v1 [math.c] 12 May 2013 Abstract. We define and study embeddings of cyces in finite affine and projective
More informationDiscrete Techniques. Chapter Introduction
Chapter 3 Discrete Techniques 3. Introduction In the previous two chapters we introduced Fourier transforms of continuous functions of the periodic and non-periodic (finite energy) type, we as various
More informationHaar Decomposition and Reconstruction Algorithms
Jim Lambers MAT 773 Fa Semester 018-19 Lecture 15 and 16 Notes These notes correspond to Sections 4.3 and 4.4 in the text. Haar Decomposition and Reconstruction Agorithms Decomposition Suppose we approximate
More informationDiscrete Techniques. Chapter Introduction
Chapter 3 Discrete Techniques 3. Introduction In the previous two chapters we introduced Fourier transforms of continuous functions of the periodic and non-periodic (finite energy) type, as we as various
More information2.1. Cantilever The Hooke's law
.1. Cantiever.1.1 The Hooke's aw The cantiever is the most common sensor of the force interaction in atomic force microscopy. The atomic force microscope acquires any information about a surface because
More informationSummation of p-adic Functional Series in Integer Points
Fiomat 31:5 (2017), 1339 1347 DOI 10.2298/FIL1705339D Pubished by Facuty of Sciences and Mathematics, University of Niš, Serbia Avaiabe at: http://www.pmf.ni.ac.rs/fiomat Summation of p-adic Functiona
More informationu(x) s.t. px w x 0 Denote the solution to this problem by ˆx(p, x). In order to obtain ˆx we may simply solve the standard problem max x 0
Bocconi University PhD in Economics - Microeconomics I Prof M Messner Probem Set 4 - Soution Probem : If an individua has an endowment instead of a monetary income his weath depends on price eves In particuar,
More informationSimplified analysis of EXAFS data and determination of bond lengths
Indian Journa of Pure & Appied Physics Vo. 49, January 0, pp. 5-9 Simpified anaysis of EXAFS data and determination of bond engths A Mishra, N Parsai & B D Shrivastava * Schoo of Physics, Devi Ahiya University,
More informationMaejo International Journal of Science and Technology
Fu Paper Maejo Internationa Journa of Science and Technoogy ISSN 1905-7873 Avaiabe onine at www.mijst.mju.ac.th A study on Lucas difference sequence spaces (, ) (, ) and Murat Karakas * and Ayse Metin
More informationSrednicki Chapter 51
Srednici Chapter 51 QFT Probems & Soutions A. George September 7, 13 Srednici 51.1. Derive the fermion-oop correction to the scaar proagator by woring through equation 5., and show that it has an extra
More informationON KAC PARAMETERS AND SPECTRAL DECOMPOSITION OF A MATRIX OF SPECIALIZED ROOTS OF LIE ALGEBRA sl n. Zlatko Drmač and Tomislav Šikić
RAD HAZU MATEMATIČKE ZNANOSTI Vo 18 = 519 (2014): 55-72 ON KAC PARAMETERS AND SPECTRAL DECOMPOSITION OF A MATRIX OF SPECIALIZED ROOTS OF LIE ALGEBRA s n Zatko Drmač and Tomisav Šikić Abstract This paper
More informationarxiv:cond-mat/ v1 [cond-mat.dis-nn] 13 Feb 2003
arxiv:cond-mat/369v [cond-mat.dis-nn] 3 Feb 3 Brownian Motion in wedges, ast passage time and the second arc-sine aw Aain Comtet, and Jean Desbois nd February 8 Laboratoire de Physique Théorique et Modèes
More information