https://akkeyre.pages.dev/tags/combinatorics/Recent content in Combinatorics on Akkeyre's BlogHugoen-usMon, 13 Apr 2026 00:00:00 +0000https://akkeyre.pages.dev/posts/permanent-combinatorics/Mon, 13 Apr 2026 00:00:00 +0000https://akkeyre.pages.dev/posts/permanent-combinatorics/The permanent of a matrix is the forgotten twin of the determinant — identical in definition, wildly different in behaviour. We explore its combinatorial meaning, key identities, and hardness.