Explore a conference talk on the positivity of higher exterior powers of the tangent bundle presented by Cécile Gachet at the Centre International de Rencontres Mathématiques in Marseille, France. Delve into key concepts of algebraic and complex geometry, including notions of positivity, contracts, proofs, and chain classes. Access this 42-minute recording, complete with chapter markers and keywords, through CIRM's Audiovisual Mathematics Library. Benefit from enriched content featuring abstracts, bibliographies, and Mathematics Subject Classification. Utilize the multi-criteria search function to discover related talks by worldwide mathematicians in various mathematical areas.