Zeta(5) Proven Irrational, Formalized in Lean Within Hours

A preprint by Aabir Fauzan appears to prove that zeta(5) is irrational, a major advance in the study of odd zeta values. Moritz Firsching formalized the proof in Lean 4 within hours, with the code open-sourced on GitHub.

2026-09-24 ~ 2026-09-24 · 4 related posts

• zeta(5) Likely Proven Irrational, Author Says Astra Verified the Argument — aran_nayebi · 2026-09-24
• ζ(5) Proven Irrational, with Lean Formalization Completed Within Hours — ctjlewis · 2026-09-24
• Zeta(5) claimed irrational: Lean 4 formalization of the proof published on GitHub — AlexKontorovich · 2026-09-24

1 near-duplicate retellings: AlexKontorovich