Jujian Zhang: Formalising Brauer Group and Group Cohomology in Lean4 (20 Feb 2025)

Round-16 hunt: picked; source: named-course / course-code long-video search (r16, wave 2); channel screens (sellers/exam/re-upload/devotional/vendor/events), provenance check, vendor/seller/devotional recheck and quality tier A passed; strict per-title check + final strict pass; oEmbed verified.

A 58-minute video from Formalisation of Mathematics Seminar @ Cam : “Jujian Zhang: Formalising Brauer Group and Group Cohomology in Lean4 (20 Feb 2025)”.

Video by Formalisation of Mathematics Seminar @ Cam , played through YouTube's embedded player.