Explore a conference talk on arithmetic geometry delivered by Jean-Louis Colliot-Thélène at the Centre International de Rencontres Mathématiques in Marseille, France. Delve into the topic of torsion cycles not detected by Jannsen's application, presented during the "Symposium on Arithmetic Geometry and its Applications" on February 7, 2023. Access this hour-long presentation and other talks by renowned mathematicians through CIRM's Audiovisual Mathematics Library. Utilize the platform's features, including chapter markers, keywords, enriched video content with abstracts and bibliographies, and a multi-criteria search function to enhance your learning experience in the field of arithmetic geometry.