Volumes of polyhedra in spaces of constant curvature
|
|
- Cassandra Welch
- 5 years ago
- Views:
Transcription
1 Volumes of polyhedra in spaces of constant curvature Alexander Mednykh Sobolev Institute of Mathematics Novosibirsk State University Russia Branched Coverings, Degenerations, and Related Topis 010 Hiroshima, Japan 08-1 March, 010 Alexander Mednykh (NSU) Volumes of polyhedra 08-1 March, / 34
2 Introduction The calculation of the volume of a polyhedron in 3-dimensional space E 3, H 3,orS 3 is a very old and difficult problem. The first known result in this direction belongs to Tartaglia ( ) who found a formula for the volume of Euclidean tetrahedron. Now this formula is known as Cayley-Menger determinant. More precisely, let be an Euclidean tetrahedron with edge lengths d ij, 1 i < j 4. Then V = Vol(T ) is given by V 1 0 d1 d13 d 14 = 1 d1 0 d3 d4. 1 d31 d3 0 d34 1 d41 d4 d43 0 Note that V is a root of quadratic equation whose coefficients are integer polynomials in d ij, 1 i < j 4. Alexander Mednykh (NSU) Volumes of polyhedra 08-1 March, 010 / 34
3 Introduction Cauchy theorem (1813) states that if the faces of a convex polyhedron are made of metal plates and the polyhedron edges are replaced by hinges, the polyhedron would be rigid. In spite of this there are non-convex polyhedra which are flexible. Bricard, 1897 (self-interesting flexible octahedron) Connelly, 1978 (the first example of true flexible polyhedron) The smallest example is given by Steffen (14 triangular faces and 9 edges). 7 3 a c 8 c e 10 f 6 a g 1 5 g 1 b 1 b d 5 11 d h 4 5 h e f 6 Alexander Mednykh (NSU) Volumes of polyhedra 08-1 March, / 34
4 Introduction Surprisely, but the result can be generalized on any Euclidean polyhedron in the following way. Theorem 1 (I. Kh. Sabitov, 1996) Let P be an Euclidean polyhedron. Then V = Vol(P) is a root of an even degree algebraic equation whose coefficients are integer polynomials in edge lengths of P depending on combinatorial type of P only. Example P 1 P (All edge lengths are taken to be 1) Polyhedra P 1 and P are of the same combinatorial type. Hence, V 1 = Vol(P 1 ) and V = Vol(P ) are roots of the same algebraic equation a 0 V n + a 1 V n a n V 0 =0. Alexander Mednykh (NSU) Volumes of polyhedra 08-1 March, / 34
5 Introduction Bellows Conjecture Very important consequence of Sabitov s theorem is a positive solution of the Bellows Conjecture proposed by Dennis Sullivan. Theorem (R. Connelly, I. Sabitov and A. Walz, 1997) All flexible polyhedra keep a constant volume as they are flexed. It was shown by Victor Alexandrov (Novosibirsk, 1997) that Bellows Conjecture fails in the spherical space S 3. In the hyperbolic space H 3 the problem is still open. Any analog of Sabitov s theorem is unknown in both spaces S 3 and H 3. Alexander Mednykh (NSU) Volumes of polyhedra 08-1 March, / 34
6 Spherical orthoscheme Theorem 3 (L. Schläfli) The volume of a spherical orthoscheme with essensial dihedral angles A, B and C A C B S 3 is given by the formula V = 1 4S(A, B, C), where S( π x, y, π z) =Ŝ(x, y, z) = ( ) D sin x sin z m cos mx cos my +cosmz 1 D +sinx sin z m x + y z m=1 and D cos x cos z cos y. Alexander Mednykh (NSU) Volumes of polyhedra 08-1 March, / 34
7 Hyperbolic orthoscheme The volume of a biorthogonal tetrahedron (orthoscheme) was calculated by Lobachevsky and Bolyai in H 3 and by Schläfli in S 3. Theorem 4 (J. Bolyai) The volume of hyperbolic orthoscheme T is given by the formula T D z A β C CD AB T T CBA BCD B α Vol (T )= tan γ z tanβ 0 z sinh zdz ( ). cosh z cos α 1 cosh z cos γ 1 Alexander Mednykh (NSU) Volumes of polyhedra 08-1 March, / 34
8 Hyperbolic orthoscheme The following theorem is the Coxeter s version of the Lobachevsky result. Theorem 5 (Lobachevsky, Coxeter) The volume of a hyperbolic orthoscheme with essential dihedral angles A, B and C A C B H 3 is given by the formula V = i S(A, B, C), 4 where S(A, B, C) is the Schläfli function. Alexander Mednykh (NSU) Volumes of polyhedra 08-1 March, / 34
9 Ideal polyhedra Consider an ideal hyperbolic tetrahedron T with all vertices on the infinity Opposite dihedral angles of ideal tetrahedron are equal to each other and A + B + C = π. Theorem 6 (J. Milnor, 198) x Vol(T )=Λ(A)+Λ(B)+Λ(C), where Λ(x) = log sint dt is the Lobachevsky function. More complicated case with only one vertex on the infinity was investigated by E. B. Vinberg (1993). Alexander Mednykh (NSU) Volumes of polyhedra 08-1 March, / 34 0
10 Ideal polyhedra Let O be an ideal symmetric octahedron with all vertices on the infinity. O: Then C = π A, D = π B, F = π E and the volume of O is given by Theorem 7 (Yana Mohanty, 00) ( Vol (O) = Λ ( π + A + B + E ( π + A B E +Λ ) +Λ ) ( π A B + E +Λ ( π A + B E )). ) Alexander Mednykh (NSU) Volumes of polyhedra 08-1 March, / 34
11 Volume of tetrahedron Despite of the above mentioned partial results, a formula the volume of an arbitrary hyperbolic tetrahedron has been unknown until very recently. The general algorithm for obtaining such a formula was indicated by W. Y. Hsiang (1988) and the complete solution of the problem was given by Yu. Cho and H. Kim (1999), J. Murakami, M. Yano (001) and A. Ushijima (00). In these papers the volume of tetrahedron is expressed as an analytic formula involving 16 Dilogarithm of Lobachevsky functions whose arguments depend on the dihedral angles of the tetrahedron and on some additional parameter which is a root of some complicated quadratic equation with complex coefficients. A geometrical meaning of the obtained formula was recognized by G. Leibon from the point of view of the Regge symmetry. An excellent exposition of these ideas and a complete geometric proof of the volume formula was given by Y. Mohanty (003). Alexander Mednykh (NSU) Volumes of polyhedra 08-1 March, / 34
12 Volume of tetrahedron We suggest the following version of the integral formula for the volume. Let T = T (A, B, C, D, E, F ) be a hyperbolic tetrahedron with dihedral angles A, B, C, D, E, F.Weset V 1 = A + B + C, V = A + E + F, V 3 = B + D + F, V 4 = C + D + E (for vertices) H 1 = A + B + D + E, H = A + C + D + F, H 3 = B + C + E + F, H 4 =0 (for Hamiltonian cycles). Theorem 8 (D. Derevnin and M., 005) The volume of a hyperbolic tetrahedron is given by the formula Vol (T )= 1 4 z z 1 log 4 i=1 cos V i +z sin H dz, i +z where z 1 and z are appropriate roots of the integrand. Alexander Mednykh (NSU) Volumes of polyhedra 08-1 March, / 34
13 Volume of tetrahedron More precisely, the roots in the previous theorem are given by the formulas z 1 = arctan K K 1 arctan K 4 K 3, z = arctan K K 1 + arctan K 4 K 3 and K 1 = K = 4 (cos(s H i )+cos(s V i )), i=1 4 (sin(s H i )+sin(s V i )), i=1 K 3 =(sinasin D +sinb sin E +sinc sin F ), K 4 = K1 + K K 3, S = A + B + C + D + E + F. Alexander Mednykh (NSU) Volumes of polyhedra 08-1 March, / 34
14 Volume of tetrahedron Recall that the Dilogarithm function is defined by Li (x) = x 0 log(1 t) dt. t We set l(z) =Li (e iz ) and note that I(l(z)) = Λ( z ). The following result is a consequence of the above theorem. Theorem 9 (J. Murakami, M. Yano, 001) Vol(T )= 1 I(U(z 1, T ) U(z, T )), where U(z, T )= 1 (l(z)+l(a + B + D + E + z) +l(a + C + D + F + z)+l(b + C + E + F + z) l(π + A + B + C + z) l(π + A + E + F + z) l(π + B + D + F + z) l(π + C + D + E + z)). Alexander Mednykh (NSU) Volumes of polyhedra 08-1 March, / 34
15 More deep history It is surprising that, more than a century ago, in 1906, the Italian mathematician G. Sforza found the formula for the volume of a non-euclidean tetrahedron. This fact became known during a discussion of the author with J. M. Montesinos at the conference in El Burgo d Osma (Spain) in August 006. Let G be Gram matrix for hyperbolic tetrahedron T.Weset c ij =( 1) i+j G ij, where G ij is ij-th minor of matrix G. Theorem 10 (G. Sforza, 1906) The volume of a hyperbolic tetrahedron T is given by the following formula Vol (T )= 1 4 A A 0 log where A 0 is a root of the equation det G =0. c 34 det G sin A c 34 + det G sin A da, Alexander Mednykh (NSU) Volumes of polyhedra 08-1 March, / 34
16 More deep history ProofofSforzaformula We start with the the following theorem. Theorem 11 (Jacobi) Let G =(a ij ) i,j=1,...,n be an n n matrix with det G =Δ.Denoteby C =(c ij ) i,j=1,...,n the matrix formed by elements c ij =( 1) i+j G ij, where G ij is ij-th minor of matrix G.Then det (c ij ) i, j=1,...,k =Δ k 1 det (a ij ) i, j=k+1,...,n. Alexander Mednykh (NSU) Volumes of polyhedra 08-1 March, / 34
17 Sforza formula Apply the theorem to Gram matrix G for n =4and k = 1 cos A x x x x x x G = cos A 1 x x x x x x, C = x x x x x x c 33 c 34. x x x x x x c 43 c 44 We have By Cosine Rule c 33 c 44 c 34 =Δ(1 cos A). sinh l A = cosh l A = c 34 c33 c 44, hence c 34 c 33c 44 c 33 c 44 = sin A c33 c 44 Δ. Alexander Mednykh (NSU) Volumes of polyhedra 08-1 March, / 34
18 Sforza formula Since exp(±l A )=coshl A ± sinh l A we have exp(l A )= c 34 +sina Δ c33 c 44, exp( l A )= c 34 +sina Δ c33 c 44. Hence, exp(l A )= c 34 +sina Δ c 34 sin A Δ, and l A = 1 log c 34 +sina Δ c 34 sin A Δ. By the Schläfli formula dv = 1 l α dα, α {A, B, C, D, E, F } A α l A V = ( )da = 1 4 A 0 A A 0 log c 34 ΔsinA c 34 + ΔsinA. The integration is taken over path from (A, B, C, D, E, F ) to (A 0, B, C, D, E, F ) where A 0 is a root of Δ=0. Alexander Mednykh (NSU) Volumes of polyhedra 08-1 March, / 34
19 Symmetric polyhedra A tetrahedron T = T (A, B, C, D, E, F ) is called to be symmetric if A = D, B = E, C = F. Theorem 1 (Derevnin-Mednykh-Pashkevich, 004) Let T be a symmetric hyperbolic tetrahedron. Then Vol(T ) is given by π/ (arcsin(a cos t)+arcsin(b cos t)+arcsin(c cos t) arcsin(cos t)) dt sin t, Θ where a =cosa, b =cosb, c =cosc, Θ (0,π/) is defined by sin A sinh l A = sin B sinh l B = sin C sinh l C =tanθ, and l A,l B,l C are the lengths of the edges of T with dihedral angles A, B, C, respectively. Alexander Mednykh (NSU) Volumes of polyhedra 08-1 March, / 34
20 Sine and cosine rules Sine and cosine rules for hyperbolic tetrahedron Let T = T (A, B, C, D, E, F ) be a hyperbolic tetrahedron with dihedral angles A, B, C, D, E, F and edge lengths l A,l B,l C,l D,l E,l F respectively. Consider two Gram matrices 1 cos A cos B cos F G = cos A 1 cos C cos E cos B cos C 1 cos D cos F cos E cos D 1 and 1 coshl D cosh l E cosh l C G = cosh l D 1 coshl F cosh l B cosh l E cosh l F 1 coshl A. cosh l C cosh l B cosh l A 1 Alexander Mednykh (NSU) Volumes of polyhedra 08-1 March, / 34
21 Sine and cosine rules Starting volume calculation for tetrahedra we rediscover the following classical result: Theorem 13 (Sine Rule, E. d Ovidio, 1877, J. L. Coolidge, 1909, W. Fenchel, 1989) sin A sin D sin B sin E sin C sin F det G = = = sinh l A sinh l D sinh l B sinh l E sinh l C sinh l F det G. The following result seems to be new or at least well-forgotten. Theorem 14 (Cosine Rule, M. Pashkevich and M., 005) cos A cos D cos B cos E det G = cosh l B cosh l E cosh l A cosh l D det G. Both results are obtained as a consequence of Theorem 11 relating complimentary minors of matrices G and G. Alexander Mednykh (NSU) Volumes of polyhedra 08-1 March, / 34
22 Symmetric octahedra Octahedron O = O(a, b, c, A, B, C) having mmm symmetry Alexander Mednykh (NSU) Volumes of polyhedra 08-1 March, 010 / 34
23 Symmetric octahedra Theorem 15 (Sine-Tangent Rule, N. Abrosimov, M. Godoy and M., 008) Let O(a, b, c, A, B, C) be a spherical octahedra having mmm-symmetry. Then the following identities hold sin A tan a = sin B tan b = sin C tan c = T =K C, where K and C are positive numbers defined by the equations K =(z xy)(x yz)(y xz), C =xyz x y z +1, and x =cosa, y =cosb, z =cosc. Alexander Mednykh (NSU) Volumes of polyhedra 08-1 March, / 34
24 Symmetric polyhedra: volume of mmm octahedron Theorem 16 (N. Abrosimov, M. Godoy and M., 008) Let O = O(A, B, C) be a spherical octahedron having mmm symmetry. Then volume V = V (O) is given θ ( ) dτ arth(x cos τ)+arth(y cos τ)+arth(z cos τ)+arth(cos τ) π cos τ, where X =cosa, Y =cosb, Z =cosc and 0 θ π/ is a root of the equation tan (1 + X )(1 + Y )(1 + Z ) θ + =0. 1+X + Y + Z Moreover, θ is given by the Sine Tangent rule sin A tan a = sin B tan b = sin C tan c =tanθ. Alexander Mednykh (NSU) Volumes of polyhedra 08-1 March, / 34
25 Symmetric polyhedra: Euclidean mmm octahedron For the Euclidean case the following result holds. Theorem 17 (R. V. Galiulin, S. N. Mikhalev, I. Kh. Sabitov, 004) Let V be the volume of an Euclidean octahedron O(a, b, c, A, B, C) with mmm symmetry. Then V is a positive root of equation 9V =(a + b c )(a + c b )(b + c a ). Alexander Mednykh (NSU) Volumes of polyhedra 08-1 March, / 34
26 Symmetric polyhedra: octahedron with m symmetry D,d D,d m m Octahedron O = O(a, b, c, d, A, B, C, D), having m symmetry. Alexander Mednykh (NSU) Volumes of polyhedra 08-1 March, / 34
27 Symmetric polyhedra: volume of m octahedron Theorem 18 (N. Abrosimov, M. Godoy and M., 008) Let O = O(A, B, C, D) be a spherical octahedron having m symmetry. Then the volume V = V (O) is given by θ ( arth(x cos τ)+arth(y cos τ)+arth(z cos τ)+arth(w cos τ)) dτ cos τ, π where X =cosa, Y =cosb, Z =cos C+D, W =cos C D and θ, 0 θ π/ is given by Sine Tangent rule sin A tan a = sin B tan b C+D sin = tan c+d = sin C D tan c d =tanθ. Alexander Mednykh (NSU) Volumes of polyhedra 08-1 March, / 34
28 Symmetric polyhedra: Euclidean m octahedron For the Euclidean case the following result holds. Theorem 19 (R. V. Galiulin, S. N. Mikhalev, I. Kh. Sabitov, 004) Let V be the volume of an Euclidean octahedron O(a, b, c, d, A, B, C, D) with m symmetry. Then V is a positive root of equation 9V =(a +b c d )(a b + cd)(b a + cd). Alexander Mednykh (NSU) Volumes of polyhedra 08-1 March, / 34
29 Symmetric polyhedra: volume of spherical hexahedron C B B A C A C A B A B C Hexahedron combinatorial cube H(A, B, C) Theorem 0 (N. Abrosimov, M. Godoy and M., 008) Volume of a spherical hexahedron H(A, B, C) with mmm symmetry is equal Θ Re π (arcth ( X cos t )+arcth ( Y cos t )+arcth ( Z cos t )+arcth ( 1 dt cos t )) sin t, where Θ, 0 Θ π is defined by tan Θ+ (XYZ + X + Y + Z 1) 4(X + YZ)(Y + XZ)(Z + XY ) =0, X =cosa, Y =cosb and Z =cosc. Alexander Mednykh (NSU) Volumes of polyhedra 08-1 March, / 34
30 Lambert cube The Lambert cube Q(α, β, γ) is one of the simplest polyhedra. By definition, this is a combinatorial cube with dihedral angles α, β and γ at three noncoplanar edges and with right angles at all other edges. The volume of the Lambert cube in hyperbolic space was obtained by R. Kellerhals (1989) in terms of the Lobachevsky function. We give the volume formula of the Lambert cube in spherical space. Alexander Mednykh (NSU) Volumes of polyhedra 08-1 March, / 34
31 Lambert cube: spherical volume Theorem 1 (D. A. Derevnin and M., 009) π The volume of a spherical Lambert cube Q(α, β, γ), given by the formula <α,β,γ <π is where V (α, β, γ) = 1 4 (δ(α, Θ) + δ(β,θ) + δ(γ,θ) δ(π, Θ) δ(0, Θ)), and Θ, π δ(α, Θ) = π Θ < Θ <πis defined by tan Θ= K + L =tanα, M =tanβ, N =tanγ. dτ log(1 cos α cos τ) cos τ K + L M N, K =(L + M + N +1)/, Alexander Mednykh (NSU) Volumes of polyhedra 08-1 March, / 34
32 Lambert cube: hyperbolic volume Remark. The function δ(α, Θ) can be considered as a spherical analog of the function Δ(α, Θ) = Λ(α +Θ) Λ(α Θ). Then the main result of R.Kellerhals (1989) for hyperbolic volume can be obtained from the above theorem by replacing δ(α, Θ) to Δ(α, Θ) and K to K. Alexander Mednykh (NSU) Volumes of polyhedra 08-1 March, / 34
33 Lambert cube: hyperbolic volume As a consequence of the above mentioned volume formula for Lambert cube we obtain Proposition 1 (D. A. Derevnin and M., 009) Let L (α, β, γ) be a spherical Lambert cube such that cos α +cos β +cos γ =1. Then Vol L (α, β, γ) = 1 4 ( π (π α) (π β) (π γ) ). Before a similar statement for spherical orthoscheme was done by Coxeter. Proposition (H. S. M. Coxeter, 1935) Let T (α, β, γ) be a spherical orthoscheme such that cos α +cos β +cos γ =1. Then Vol T (α, β, γ) = 1 4 (β ( π α) ( π γ) ). Alexander Mednykh (NSU) Volumes of polyhedra 08-1 March, / 34
34 Rational Volume Problem The following problem is widely known and still open. Rational Volume Problem. Let P be a spherical polyhedron whose dihedral angles are in πq. Then Vol (P) π Q. Examples 1. Since cos π 3 +cos π 3 +cos 3π 4 =1, by Proposition 1 we have Vol L ( π 3, π 3, 3π 4 )= π.. Let P be a Coxeter polyhedron in S 3 (that is all dihedral angles of P are π n for some n N). Then the Coxeter group Δ(P) generated by reflections in faces of P is finite and Vol (P) = Vol (S 3 ) Δ(P) = π Δ(P) π Q. Alexander Mednykh (NSU) Volumes of polyhedra 08-1 March, / 34
Volumes of polyhedra in hyperbolic and spherical spaces
Volumes of polyhedra in hyperbolic and spherical spaces Alexander Mednykh Sobolev Institute of Mathematics Novosibirsk State University Russia Toronto 19 October 011 Alexander Mednykh (NSU) Volumes of
More informationThe Seidel problem on the volume of hyperbolic tetrahedra
The Seidel problem on the volume of hyperbolic tetrahedra N. Abrosimov Sobolev Institute of Mathematics, Novosibirsk, Russia Warwick Mathematics Institute, July 6, 2007. J.J. Seidel, On the volume of a
More informationThe Brahmahupta s theorem after Coxeter
The Brahmahupta s theorem after Coxeter Alexander Mednykh Sobolev Institute of Mathematics Novosibirsk State University Russia Workshop on Rigidity Toronto, Canada October, 011 Alexander Mednykh (NSU)
More informationOn the Volume Formula for Hyperbolic Tetrahedra
Discrete Comput Geom :347 366 (999 Discrete & Computational Geometry 999 Springer-Verlag New York Inc. On the Volume Formula for Hyperbolic Tetrahedra Yunhi Cho and Hyuk Kim Department of Mathematics,
More informationSiberian Mathematical Journal, Vol. 45, No. 5, pp , 2004 Original Russian Text c 2004 Derevnin D. A., Mednykh A. D. and Pashkevich M. G.
Siberian Mathematical Jornal Vol. 45 No. 5 pp. 840-848 2004 Original Rssian Text c 2004 Derevnin D. A. Mednykh A. D. and Pashkevich M. G. On the volme of symmetric tetrahedron 1 D.A. Derevnin A.D. Mednykh
More informationVolume formula for a Z 2 -symmetric spherical tetrahedron through its edge lengths
Ark. Mat., 51 (013), 99 13 DOI: 10.1007/s1151-011-0148- c 011 by Institut Mittag-Leffler. All rights reserved Volume formula for a Z -symmetric spherical tetrahedron through its edge lengths Alexander
More informationSpherical trigonometry
Spherical trigonometry 1 The spherical Pythagorean theorem Proposition 1.1 On a sphere of radius, any right triangle AC with C being the right angle satisfies cos(c/) = cos(a/) cos(b/). (1) Proof: Let
More informationThe Dual Jacobian of a Generalised Hyperbolic Tetrahedron, and Volumes of Prisms
The Dual Jacobian of a Generalised Hyperbolic Tetrahedron, and Volumes of Prisms Alexander Kolpakov, Jun Murakami To cite this version: Alexander Kolpakov, Jun Murakami. The Dual Jacobian of a Generalised
More informationLAMBERT CUBE AND LÖBELL POLYHEDRON REVISITED
LAMBERT CUBE AND LÖBELL POLYHEDRON REVISITED PETER BUSER, ALEXANDER MEDNYKH, AND ANDREI VESNIN Dedicated to Ernest Borisovich Vinberg on the occasion of his academic anniversary Abstract. The first example
More informationVolume of a doubly truncated hyperbolic tetrahedron
Volume of a doubly truncated hyperbolic tetrahedron Alexander Kolpakov, Jun Murakami To cite this version: Alexander Kolpakov, Jun Murakami. Volume of a doubly truncated hyperbolic tetrahedron. Aequationes
More informationThe Growth Rates of Ideal Coxeter Polyhedra in Hyperbolic 3-Space
TOKYO J. MATH. VOL. 40, NO., 017 DOI: 10.3836/tjm/15017934 The Growth Rates of Ideal Coxeter Polyhedra in Hyperbolic 3-Space Jun NONAKA and Ruth KELLERHALS Waseda University Senior High School and University
More informationGeneralized volume and geometric structure of 3-manifolds
Generalized volume and geometric structure of 3-manifolds Jun Murakami Department of Mathematical Sciences, School of Science and Engineering, Waseda University Introduction For several hyperbolic knots,
More informationA Surprising Application of Non-Euclidean Geometry
A Surprising Application of Non-Euclidean Geometry Nicholas Reichert June 4, 2004 Contents 1 Introduction 2 2 Geometry 2 2.1 Arclength... 3 2.2 Central Projection.......................... 3 2.3 SidesofaTriangle...
More informationChapter 7: Techniques of Integration
Chapter 7: Techniques of Integration MATH 206-01: Calculus II Department of Mathematics University of Louisville last corrected September 14, 2013 1 / 43 Chapter 7: Techniques of Integration 7.1. Integration
More informationarxiv:math/ v1 [math.mg] 1 Dec 2002
arxiv:math/01010v1 [math.mg] 1 Dec 00 Coxeter Decompositions of Hyperbolic Tetrahedra. A. Felikson Abstract. In this paper, we classify Coxeter decompositions of hyperbolic tetrahedra, i.e. simplices in
More informationHoroball Packings for the Lambert-cube Tilings in the Hyperbolic 3-space
Beiträge zur Algebra und Geometrie Contributions to Algebra and Geometry Volume 44 (2005), No. 1, 43-60. Horoball Packings for the Lambert-cube Tilings in the Hyperbolic 3-space Dedicated to Professor
More informationOn the Volume of a Hyperbolic and Spherical Tetrahedron
communications in analysis and geometry Volume 13, Number, 379-400, 005 On the Volume of a Hyperbolic and Spherical Tetrahedron Jun Murakami and Masakazu Yano A new formula for the volume of a hyperbolic
More information8. Hyperbolic triangles
8. Hyperbolic triangles Note: This year, I m not doing this material, apart from Pythagoras theorem, in the lectures (and, as such, the remainder isn t examinable). I ve left the material as Lecture 8
More informationHEDRONOMETRIC FORMULAS FOR A HYPERBOLIC TETRAHEDRON
HEDRONOMETRIC FORMULAS FOR A HYPERBOLIC TETRAHEDRON B.D.S. BLUE MCCONNELL MATH@DAYLATEANDDOLLARSHORT.COM Abstract. This living document will serve as an ever-expanding resource of results in hyperbolic
More informationOn the volume of a hyperbolic and spherical tetrahedron 1
On the volume of a hyperbolic and spherical tetrahedron 1 Jun Murakami and Masakazu Yano 3 Abstract. A new formula for the volume of a hyperbolic and spherical tetrahedron is obtained from the quantum
More informationPolylogarithms and Hyperbolic volumes Matilde N. Laĺın
Polylogarithms and Hyperbolic volumes Matilde N. Laĺın University of British Columbia and PIMS, Max-Planck-Institut für Mathematik, University of Alberta mlalin@math.ubc.ca http://www.math.ubc.ca/~mlalin
More information(A B) 2 + (A B) 2. and factor the result.
Transformational Geometry of the Plane (Master Plan) Day 1. Some Coordinate Geometry. Cartesian (rectangular) coordinates on the plane. What is a line segment? What is a (right) triangle? State and prove
More informationUSAC Colloquium. Bending Polyhedra. Andrejs Treibergs. September 4, Figure 1: A Rigid Polyhedron. University of Utah
USAC Colloquium Bending Polyhedra Andrejs Treibergs University of Utah September 4, 2013 Figure 1: A Rigid Polyhedron. 2. USAC Lecture: Bending Polyhedra The URL for these Beamer Slides: BendingPolyhedra
More informationHyperbolic volumes and zeta values An introduction
Hyperbolic volumes and zeta values An introduction Matilde N. Laĺın University of Alberta mlalin@math.ulberta.ca http://www.math.ualberta.ca/~mlalin Annual North/South Dialogue in Mathematics University
More informationCommensurability of hyperbolic Coxeter groups: theory and computation
RIMS Kôkyûroku Bessatsu Bx (201x), 000 000 Commensurability of hyperbolic Coxeter groups: theory and computation By Rafael Guglielmetti, Matthieu Jacquemet and Ruth Kellerhals Abstract For hyperbolic Coxeter
More informationTRIGONOMETRY IN EXTENDED HYPERBOLIC SPACE AND EXTENDED DE SITTER SPACE
Bull. Korean Math. Soc. 46 (009), No. 6, pp. 1099 1133 DOI 10.4134/BKMS.009.46.6.1099 TRIGONOMETRY IN EXTENDED HYPERBOLIC SPACE AND EXTENDED DE SITTER SPACE Yunhi Cho Abstract. We study the hyperbolic
More informationSYMMETRIES IN R 3 NAMITA GUPTA
SYMMETRIES IN R 3 NAMITA GUPTA Abstract. This paper will introduce the concept of symmetries being represented as permutations and will proceed to explain the group structure of such symmetries under composition.
More informationOptimistic limits of the colored Jones polynomials
Optimistic limits of the colored Jones polynomials Jinseok Cho and Jun Murakami arxiv:1009.3137v9 [math.gt] 9 Apr 2013 October 31, 2018 Abstract We show that the optimistic limits of the colored Jones
More informationSome notes on Coxeter groups
Some notes on Coxeter groups Brooks Roberts November 28, 2017 CONTENTS 1 Contents 1 Sources 2 2 Reflections 3 3 The orthogonal group 7 4 Finite subgroups in two dimensions 9 5 Finite subgroups in three
More informationMathematics 104 Fall Term 2006 Solutions to Final Exam. sin(ln t) dt = e x sin(x) dx.
Mathematics 14 Fall Term 26 Solutions to Final Exam 1. Evaluate sin(ln t) dt. Solution. We first make the substitution t = e x, for which dt = e x. This gives sin(ln t) dt = e x sin(x). To evaluate the
More informationTRIGONOMETRY OUTCOMES
TRIGONOMETRY OUTCOMES C10. Solve problems involving limits of trigonometric functions. C11. Apply derivatives of trigonometric functions. C12. Solve problems involving inverse trigonometric functions.
More informationIn these notes we will outline a proof of Lobachevskiĭ s main equation for the angle of parallelism, namely
Mathematics 30 Spring Semester, 003 Notes on the angle of parallelism c W. Taylor, 003 In these notes we will outline a proof of Lobachevskiĭ s main equation for the angle of parallelism, namely ( ) Π(y)
More informationMath 1060 Midterm 2 Review Dugopolski Trigonometry Edition 3, Chapter 3 and 4
Math 1060 Midterm Review Dugopolski Trigonometry Edition, Chapter and.1 Use identities to find the exact value of the function for the given value. 1) sin α = and α is in quadrant II; Find tan α. Simplify
More informationFor a semi-circle with radius r, its circumfrence is πr, so the radian measure of a semi-circle (a straight line) is
Radian Measure Given any circle with radius r, if θ is a central angle of the circle and s is the length of the arc sustained by θ, we define the radian measure of θ by: θ = s r For a semi-circle with
More informationConsidering our result for the sum and product of analytic functions, this means that for (a 0, a 1,..., a N ) C N+1, the polynomial.
Lecture 3 Usual complex functions MATH-GA 245.00 Complex Variables Polynomials. Construction f : z z is analytic on all of C since its real and imaginary parts satisfy the Cauchy-Riemann relations and
More informationTrig Identities. or (x + y)2 = x2 + 2xy + y 2. Dr. Ken W. Smith Other examples of identities are: (x + 3)2 = x2 + 6x + 9 and
Trig Identities An identity is an equation that is true for all values of the variables. Examples of identities might be obvious results like Part 4, Trigonometry Lecture 4.8a, Trig Identities and Equations
More informationarxiv: v1 [math.ag] 19 Oct 2016
Reflective anisotropic hyperbolic lattices of rank 4 Bogachev N.V. a a Department of Mathematics and Mechanics, Lomonosov Moscow State University, 119991 Leninskie Gory, Moscow, Russia arxiv:1610.06148v1
More information2 Recollection of elementary functions. II
Recollection of elementary functions. II Last updated: October 5, 08. In this section we continue recollection of elementary functions. In particular, we consider exponential, trigonometric and hyperbolic
More informationSET 1. (1) Solve for x: (a) e 2x = 5 3x
() Solve for x: (a) e x = 5 3x SET We take natural log on both sides: ln(e x ) = ln(5 3x ) x = 3 x ln(5) Now we take log base on both sides: log ( x ) = log (3 x ln 5) x = log (3 x ) + log (ln(5)) x x
More informationC3 Exam Workshop 2. Workbook. 1. (a) Express 7 cos x 24 sin x in the form R cos (x + α) where R > 0 and 0 < α < 2
C3 Exam Workshop 2 Workbook 1. (a) Express 7 cos x 24 sin x in the form R cos (x + α) where R > 0 and 0 < α < 2 π. Give the value of α to 3 decimal places. (b) Hence write down the minimum value of 7 cos
More informationCOMPLEX ANALYSIS TOPIC V: HISTORICAL REMARKS
COMPLEX ANALYSIS TOPIC V: HISTORICAL REMARKS PAUL L. BAILEY Historical Background Reference: http://math.fullerton.edu/mathews/n2003/complexnumberorigin.html Rafael Bombelli (Italian 1526-1572) Recall
More informationTopic 4 Notes Jeremy Orloff
Topic 4 Notes Jeremy Orloff 4 Complex numbers and exponentials 4.1 Goals 1. Do arithmetic with complex numbers.. Define and compute: magnitude, argument and complex conjugate of a complex number. 3. Euler
More informationSum and Difference Identities
Sum and Difference Identities By: OpenStaxCollege Mount McKinley, in Denali National Park, Alaska, rises 20,237 feet (6,168 m) above sea level. It is the highest peak in North America. (credit: Daniel
More informationKAZHDAN LUSZTIG CELLS IN INFINITE COXETER GROUPS. 1. Introduction
KAZHDAN LUSZTIG CELLS IN INFINITE COXETER GROUPS MIKHAIL V. BELOLIPETSKY AND PAUL E. GUNNELLS 1. Introduction Groups defined by presentations of the form s 1,..., s n s 2 i = 1, (s i s j ) m i,j = 1 (i,
More informationINTEGRATING RADICALS
INTEGRATING RADICALS MATH 53, SECTION 55 (VIPUL NAIK) Corresponding material in the book: Section 8.4. What students should already know: The definitions of inverse trigonometric functions. The differentiation
More informationSummary: Primer on Integral Calculus:
Physics 2460 Electricity and Magnetism I, Fall 2006, Primer on Integration: Part I 1 Summary: Primer on Integral Calculus: Part I 1. Integrating over a single variable: Area under a curve Properties of
More informationCorrections and Minor Revisions of Mathematical Methods in the Physical Sciences, third edition, by Mary L. Boas (deceased)
Corrections and Minor Revisions of Mathematical Methods in the Physical Sciences, third edition, by Mary L. Boas (deceased) Updated December 6, 2017 by Harold P. Boas This list includes all errors known
More informationTHE RIGIDITY OF SUSPENSIONS
J. DIFFERENTIAL GEOMETRY 13 (1978) 399-408 THE RIGIDITY OF SUSPENSIONS ROBERT CONNELLY 1. Introduction We investigate the continuous rigidity of a suspension of a polygonal curve in three-space. The main
More informationC3 Revision Questions. (using questions from January 2006, January 2007, January 2008 and January 2009)
C3 Revision Questions (using questions from January 2006, January 2007, January 2008 and January 2009) 1 2 1. f(x) = 1 3 x 2 + 3, x 2. 2 ( x 2) (a) 2 x x 1 Show that f(x) =, x 2. 2 ( x 2) (4) (b) Show
More informationarxiv: v2 [math.gt] 26 Apr 2014
Volume and rigidity of hyperbolic polyhedral 3-manifolds Feng Luo & Tian Yang arxiv:1404.5365v2 [math.gt] 26 Apr 2014 Abstract We investigate the rigidity of hyperbolic cone metrics on 3-manifolds which
More informationY. D. Chai and Young Soo Lee
Honam Mathematical J. 34 (01), No. 1, pp. 103 111 http://dx.doi.org/10.5831/hmj.01.34.1.103 LOWER BOUND OF LENGTH OF TRIANGLE INSCRIBED IN A CIRCLE ON NON-EUCLIDEAN SPACES Y. D. Chai and Young Soo Lee
More informationcorrelated to the Indiana Academic Standards for Precalculus CC2
correlated to the Indiana Academic Standards for Precalculus CC2 6/2003 2003 Introduction to Advanced Mathematics 2003 by Richard G. Brown Advanced Mathematics offers comprehensive coverage of precalculus
More informationCHAPTER 3 ELEMENTARY FUNCTIONS 28. THE EXPONENTIAL FUNCTION. Definition: The exponential function: The exponential function e z by writing
CHAPTER 3 ELEMENTARY FUNCTIONS We consider here various elementary functions studied in calculus and define corresponding functions of a complex variable. To be specific, we define analytic functions of
More informationFP3 mark schemes from old P4, P5, P6 and FP1, FP2, FP3 papers (back to June 2002)
FP mark schemes from old P, P5, P6 and FP, FP, FP papers (back to June ) Please note that the following pages contain mark schemes for questions from past papers. Where a question reference is marked with
More information(b) g(x) = 4 + 6(x 3) (x 3) 2 (= x x 2 ) M1A1 Note: Accept any alternative form that is correct. Award M1A0 for a substitution of (x + 3).
Paper. Answers. (a) METHOD f (x) q x f () q 6 q 6 f() p + 8 9 5 p METHOD f(x) (x ) + 5 x + 6x q 6, p (b) g(x) + 6(x ) (x ) ( + x x ) Note: Accept any alternative form that is correct. Award A for a substitution
More informationMATH 434 Fall 2016 Homework 1, due on Wednesday August 31
Homework 1, due on Wednesday August 31 Problem 1. Let z = 2 i and z = 3 + 4i. Write the product zz and the quotient z z in the form a + ib, with a, b R. Problem 2. Let z C be a complex number, and let
More informationCurvilinear coordinates
C Curvilinear coordinates The distance between two points Euclidean space takes the simplest form (2-4) in Cartesian coordinates. The geometry of concrete physical problems may make non-cartesian coordinates
More informationA Library of Functions
LibraryofFunctions.nb 1 A Library of Functions Any study of calculus must start with the study of functions. Functions are fundamental to mathematics. In its everyday use the word function conveys to us
More information1966 IMO Shortlist. IMO Shortlist 1966
IMO Shortlist 1966 1 Given n > 3 points in the plane such that no three of the points are collinear. Does there exist a circle passing through (at least) 3 of the given points and not containing any other
More informationMultiple Choice. Compute the Jacobian, (u, v), of the coordinate transformation x = u2 v 4, y = uv. (a) 2u 2 + 4v 4 (b) xu yv (c) 3u 2 + 7v 6
.(5pts) y = uv. ompute the Jacobian, Multiple hoice (x, y) (u, v), of the coordinate transformation x = u v 4, (a) u + 4v 4 (b) xu yv (c) u + 7v 6 (d) u (e) u v uv 4 Solution. u v 4v u = u + 4v 4..(5pts)
More informationThe American School of Marrakesh. AP Calculus AB Summer Preparation Packet
The American School of Marrakesh AP Calculus AB Summer Preparation Packet Summer 2016 SKILLS NEEDED FOR CALCULUS I. Algebra: *A. Exponents (operations with integer, fractional, and negative exponents)
More information2 Trigonometric functions
Theodore Voronov. Mathematics 1G1. Autumn 014 Trigonometric functions Trigonometry provides methods to relate angles and lengths but the functions we define have many other applications in mathematics..1
More informationCore 3 (A2) Practice Examination Questions
Core 3 (A) Practice Examination Questions Trigonometry Mr A Slack Trigonometric Identities and Equations I know what secant; cosecant and cotangent graphs look like and can identify appropriate restricted
More informationAnalytic Trigonometry. Copyright Cengage Learning. All rights reserved.
Analytic Trigonometry Copyright Cengage Learning. All rights reserved. 7.4 Basic Trigonometric Equations Copyright Cengage Learning. All rights reserved. Objectives Basic Trigonometric Equations Solving
More informationTrig Practice 08 and Specimen Papers
IB Math High Level Year : Trig: Practice 08 and Spec Papers Trig Practice 08 and Specimen Papers. In triangle ABC, AB = 9 cm, AC = cm, and Bˆ is twice the size of Ĉ. Find the cosine of Ĉ.. In the diagram
More informationCompact hyperbolic Coxeter n-polytopes with n + 3 facets
Compact hyperbolic Coxeter n-polytopes with n + 3 facets Pavel Tumarkin Independent University of Moscow B. Vlassievskii 11, 11900 Moscow, Russia pasha@mccme.ru Submitted: Apr 3, 007; Accepted: Sep 30,
More informationTheorem on altitudes and the Jacobi identity
Theorem on altitudes and the Jacobi identity A. Zaslavskiy and M. Skopenkov Solutions. First let us give a table containing the answers to all the problems: Algebraic object Geometric sense A apointa a
More informationMath 205, Winter 2018, Assignment 3
Math 05, Winter 08, Assignment 3 Solutions. Calculate the following integrals. Show your steps and reasoning. () a) ( + + )e = ( + + )e ( + )e = ( + + )e ( + )e + e = ( )e + e + c = ( + )e + c This uses
More informationDetermining Flexibility of Molecules Using Resultants of Polynomial Systems
Determining Flexibility of Molecules Using Resultants of Polynomial Systems Robert H. Lewis 1 and Evangelos A. Coutsias 2 1 Fordham University, New York, NY 10458, USA 2 University of New Mexico, Albuquerque,
More informationz n. n=1 For more information on the dilogarithm, see for example [Zagier, 2007]. Note that for z < 1, the derivative of ψ(z) satisfies = 1 (z) = n
CHAPTER 8 Volumes We have seen that hyperbolic 3-manifolds have finite volume if and only if they are compact or the interior of a compact manifold with finitely many torus boundary components. However,
More informationExercises involving elementary functions
017:11:0:16:4:09 c M K Warby MA3614 Complex variable methods and applications 1 Exercises involving elementary functions 1 This question was in the class test in 016/7 and was worth 5 marks a) Let z +
More informationSine * * This file is from the 3D-XplorMath project. Please see:
Sine * The demo in 3D-XplorMath illustrates: If a unit circle in the plane is traversed with constant velocity then it is parametrized with the so-called trigonometric or circular functions, c(t) = (cos
More informationMATH1231 CALCULUS. Session II Dr John Roberts (based on notes of A./Prof. Bruce Henry) Red Center Room 3065
MATH1231 CALCULUS Session II 2007. Dr John Roberts (based on notes of A./Prof. Bruce Henry) Red Center Room 3065 Jag.Roberts@unsw.edu.au MATH1231 CALCULUS p.1/66 Overview Systematic Integration Techniques
More informationFLEXIBLE SUSPENSIONS WITH A HEXAGONAL EQUATOR
Illinois Journal of Mathematics Volume 55, Number 1, Spring 2011, Pages 127 155 S0019-2082 FLEXIBLE SUSPENSIONS WITH A HEXAGONAL EQUATOR VICTOR ALEXANDROV AND ROBERT CONNELLY Abstract. Weconstructaflexible(non-embedded)suspension
More informationSTATE COUNCIL OF EDUCATIONAL RESEARCH AND TRAINING TNCF DRAFT SYLLABUS.
STATE COUNCIL OF EDUCATIONAL RESEARCH AND TRAINING TNCF 2017 - DRAFT SYLLABUS Subject :Mathematics Class : XI TOPIC CONTENT Unit 1 : Real Numbers - Revision : Rational, Irrational Numbers, Basic Algebra
More informationSecond Midterm Exam Name: Practice Problems March 10, 2015
Math 160 1. Treibergs Second Midterm Exam Name: Practice Problems March 10, 015 1. Determine the singular points of the function and state why the function is analytic everywhere else: z 1 fz) = z + 1)z
More informationAsymptotic Behaviour of λ-convex Sets in the Hyperbolic Plane
Geometriae Dedicata 76: 75 89, 1999. 1999 Kluwer Academic Publishers. Printed in the Netherlands. 75 Asymptotic Behaviour of λ-convex Sets in the Hyperbolic Plane EDUARDO GALLEGO and AGUSTÍ REVENTÓS Departament
More informationOn the volume conjecture for quantum 6j symbols
On the volume conjecture for quantum 6j symbols Jun Murakami Waseda University July 27, 2016 Workshop on Teichmüller and Grothendieck-Teichmüller theories Chern Institute of Mathematics, Nankai University
More informationMath 005A Prerequisite Material Answer Key
Math 005A Prerequisite Material Answer Key 1. a) P = 4s (definition of perimeter and square) b) P = l + w (definition of perimeter and rectangle) c) P = a + b + c (definition of perimeter and triangle)
More informationCHAPTER 4. Elementary Functions. Dr. Pulak Sahoo
CHAPTER 4 Elementary Functions BY Dr. Pulak Sahoo Assistant Professor Department of Mathematics University Of Kalyani West Bengal, India E-mail : sahoopulak1@gmail.com 1 Module-4: Multivalued Functions-II
More informationRational Trigonometry. Rational Trigonometry
There are an infinite number of points on the unit circle whose coordinates are each rational numbers. Indeed every Pythagorean triple gives one! 3 65 64 65 7 5 4 5 03 445 396 445 3 4 5 5 75 373 5 373
More informationThe growth rates of ideal Coxeter polyhedra in hyperbolic 3-space
The growth rates of ideal Coxeter polyhedra in hyperbolic 3-space Jun Nonaka Waseda University Senior High School Joint work with Ruth Kellerhals (University of Fribourg) June 26 2017 Boston University
More informationWelcome to AP Calculus!!!
Welcome to AP Calculus!!! In preparation for next year, you need to complete this summer packet. This packet reviews & expands upon the concepts you studied in Algebra II and Pre-calculus. Make sure you
More informationMathematics of Imaging: Lecture 3
Mathematics of Imaging: Lecture 3 Linear Operators in Infinite Dimensions Consider the linear operator on the space of continuous functions defined on IR. J (f)(x) = x 0 f(s) ds Every function in the range
More informationFurther Pure Mathematics 3 GCE Further Mathematics GCE Pure Mathematics and Further Mathematics (Additional) A2 optional unit
Unit FP3 Further Pure Mathematics 3 GCE Further Mathematics GCE Pure Mathematics and Further Mathematics (Additional) A optional unit FP3.1 Unit description Further matrix algebra; vectors, hyperbolic
More informationEvgeniy V. Martyushev RESEARCH STATEMENT
Evgeniy V. Martyushev RESEARCH STATEMENT My research interests lie in the fields of topology of manifolds, algebraic topology, representation theory, and geometry. Specifically, my work explores various
More informationIndiana Academic Standards for Precalculus
PRECALCULUS correlated to the Indiana Academic Standards for Precalculus CC2 6/2003 2004 Introduction to Precalculus 2004 by Roland E. Larson and Robert P. Hostetler Precalculus thoroughly explores topics
More informationRigidity of polyhedral surfaces, II
Rigidity of polyhedral surfaces, II REN GUO FENG LUO We study the rigidity of polyhedral surfaces using variational principle. The action functionals are derived from the cosine laws. The main focus of
More informationQualification Exam: Mathematical Methods
Qualification Exam: Mathematical Methods Name:, QEID#41534189: August, 218 Qualification Exam QEID#41534189 2 1 Mathematical Methods I Problem 1. ID:MM-1-2 Solve the differential equation dy + y = sin
More informationDRAFT - Math 101 Lecture Note - Dr. Said Algarni
3 Differentiation Rules 3.1 The Derivative of Polynomial and Exponential Functions In this section we learn how to differentiate constant functions, power functions, polynomials, and exponential functions.
More informationUNIVERSITY OF CAMBRIDGE Faculty of Mathematics MATHEMATICS WORKBOOK
UNIVERSITY OF CAMBRIDGE Faculty of Mathematics MATHEMATICS WORKBOOK August, 07 Introduction The Mathematical Tripos is designed to be accessible to students who are familiar with the the core A-level syllabus
More informationFriday 09/15/2017 Midterm I 50 minutes
Fa 17: MATH 2924 040 Differential and Integral Calculus II Noel Brady Friday 09/15/2017 Midterm I 50 minutes Name: Student ID: Instructions. 1. Attempt all questions. 2. Do not write on back of exam sheets.
More informationMATHEMATICAL FORMULAS AND INTEGRALS
HANDBOOK OF MATHEMATICAL FORMULAS AND INTEGRALS Second Edition ALAN JEFFREY Department of Engineering Mathematics University of Newcastle upon Tyne Newcastle upon Tyne United Kingdom ACADEMIC PRESS A Harcourt
More informationCore A-level mathematics reproduced from the QCA s Subject criteria for Mathematics document
Core A-level mathematics reproduced from the QCA s Subject criteria for Mathematics document Background knowledge: (a) The arithmetic of integers (including HCFs and LCMs), of fractions, and of real numbers.
More informationLaplacians of Graphs, Spectra and Laplacian polynomials
Laplacians of Graphs, Spectra and Laplacian polynomials Lector: Alexander Mednykh Sobolev Institute of Mathematics Novosibirsk State University Winter School in Harmonic Functions on Graphs and Combinatorial
More informationCONTINUITY AND DIFFERENTIABILITY
CONTINUITY AND DIFFERENTIABILITY Revision Assignment Class 1 Chapter 5 QUESTION1: Check the continuity of the function f given by f () = 7 + 5at = 1. The function is efine at the given point = 1 an its
More informationSolution Sheet 1.4 Questions 26-31
Solution Sheet 1.4 Questions 26-31 26. Using the Limit Rules evaluate i) ii) iii) 3 2 +4+1 0 2 +4+3, 3 2 +4+1 2 +4+3, 3 2 +4+1 1 2 +4+3. Note When using a Limit Rule you must write down which Rule you
More informationStudy Guide/Practice Exam 3
Study Guide/Practice Exam 3 This study guide/practice exam covers only the material since exam. The final exam, however, is cumulative so you should be sure to thoroughly study earlier material. The distribution
More informationPacific Journal of Mathematics
Pacific Journal of Mathematics A SCHLÄFLI DIFFERENTIAL FORMULA FOR SIMPLICES IN SEMI-RIEMANNIAN HYPERQUADRICS, GAUSS-BONNET FORMULAS FOR SIMPLICES IN THE DE SITTER SPHERE AND THE DUAL VOLUME OF A HYPERBOLIC
More informationVII. Techniques of Integration
VII. Techniques of Integration Integration, unlike differentiation, is more of an art-form than a collection of algorithms. Many problems in applied mathematics involve the integration of functions given
More information