Geometría Combinatoria clase 23

Round-13 hunt: picked; source: named-course long-video search (round-12 queries, single-hit channels, second prefilter); channel screens (sellers/exam/re-upload/devotional/vendor/events), provenance check, vendor/seller/devotional recheck and quality tier B passed; strict per-title check + final strict pass; oEmbed verified.

A 32-minute video from Ruy Fabila-Monroy: “Geometría Combinatoria clase 23”.

Video by Ruy Fabila-Monroy, played through YouTube's embedded player.