Open Research Index

sneed-and-feed/lean-theorems-1

Sneed & Feed Formalization Team

Palomar Registrypalomar/PALOMAR-2026-08-26-000009Aug 26, 2026math.COscore 0

A complete machine-checked Lean 4 formalization of the Erdős–Ko–Rado theorem (1961) on intersecting families of finite sets using Katona's circle method (1972), along with the construction of the classical Hilton–Milner (1967) extremal non-star intersecting family. To the maintainers' knowledge, the theorem was not found in an exact declaration, docstring, and type signature search of the pinned Mathlib revision (Mathlib v4.34.0-rc1).

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