# Book:Elena Deza/Figurate Numbers

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## Elena Deza and Michel Marie Deza: Figurate Numbers

Published $2012$, World Scientific Publishing Co. Pte. Ltd.

ISBN 978-981-4355-48-3.

### Contents

Notations
Preface
1. Plane figurate numbers
1.1 Definitions and formulas
1.2 Main properties of polygonal numbers
1.3 Square triangular numbers
1.4 Other highly polygonal numbers
1.5 Amount of a given number in all polygonal numbers
1.6 Centered polygonal numbers
1.7 Other plane figurate numbers
1.8 Generalized plane figurate numbers
2. Space figurate numbers
2.1 Pyramidal numbers
2.2 Cubic numbers
2.3 Octahedral numbers
2.4 Other regular polyhedral numbers
2.5 Some semiregular and star polyhedral numbers
2.6 Centered space figurate numbers
2.7 Other space figurate numbers
2.8 Generalized space figurate numbers
3. Multidimensional figurate numbers
3.1 Pentatope numbers and their multidimensional analogues
3.2 Biquadratic numbers and their multidimensional analogues
3.3 Other regular polytope numbers
3.4 Nexus numbers
3.5 Pyramidal numbers of the second order and their multidimensional analogues
3.6 Centered multidimensional figurate numbers
3.7 Generalized multidimensional figurate numbers
4. Areas of number theory including figurate numbers
4.2 Pascal's triangle and binomial theorem
4.3 Pythagorean triples and other Diophantine equations
4.4 Perfect numbers
4.5 Mersenne and Fermat numbers
4.6 Fibonacci and Lucas numbers
4.7 Palindromic numbers
4.8 Other special numbers
4.9 Prime numbers
4.10 Magic constructions
4.11 Unrestricted partitions
4.12 Waring's problem
5. Fermat's polygonal number theorem
5.1 History of the problem
5.2 Lagrange's four-square theorem
5.3 Gauss's three-triangular-number theorem; elementary considerations
5.4 Proof of the Gauss's three-triangular-number theorem
5.5 Sums of squares and Minkowski's convex body theorem
5.6 Cauchy's proof of the polygonal number theorem
5.7 Pepin's proof of the polygonal number theorem
5.8 Other results related to the problem
6. Zoo of figurate-related numbers
7. Exercises
Bibliography
Index