From: Tobias Nipkow <nipkow@in.tum.de>
Polygonal_Number_Theorem
Kevin Lee, Zhengkun Ye and Angeliki Koutsoukou-Argyraki
We formalize the proofs of Cauchy's and Legendre's Polygonal Number Theorems
given in Melvyn B. Nathanson's book "Additive Number Theory: The Classical Bases".
... (see the url below)
We also formalize the proof of Gauss's theorem which states that every
non-negative integer is the sum of three triangular numbers.
https://www.isa-afp.org/entries/Polygonal_Number_Theorem.html
Enjoy!
Last updated: Jan 04 2025 at 20:18 UTC