The Mathematical Complement of David Rittenhouse

New channel American Philosophical Society: title sample judged 'pick' (Mix of genuine scholarly lectures and talks alongside many award ceremonies, panel discussions, inductions, conversation); passed a second screen for sellers/exam-prep/re-uploads; 0 of 3 sampled transcripts showed teaching, 0 not; titles picked one by one, checked strictly; oEmbed verified. Flagship institution; its channel mixes lectures with ceremonies, so lectures were picked one by one.