Soundness and Completeness for Proof Trees | Attic Philosophy

Round-9 hunt: picked; channel-level screens (sellers/exam/re-upload/devotional/vendor) passed; strict per-title check + final strict pass; oEmbed verified.

A 15-minute video from Attic Philosophy: “Soundness and Completeness for Proof Trees | Attic Philosophy”.

Video by Attic Philosophy, played through YouTube's embedded player.