Speaker: Prof. Luca Barbieri-Viale (University of Milan)

Time: 16:00-17:00 September 4, 2026 (Friday) & 10:00-11:00 September 9, 2026 (Wednesday)

Inviter: Prof. Xu Shen (MCM, CAS)

Place: MCM110

Titles & Abstracts:

Talk 1: Grothendieck Periods on Algebraic Numbers

Construction of a period regulator for motivic cohomology & higher cycles of algebraic schemes, formulating a conjecture on its surjectivity for algebraic numbers.

Talk 2: Universal Weil Cohomology and Motives

Construction of a new universal Weil cohomology for smooth projective varieties, yielding a variant for Lefschetz axioms and a new framework for motives & mixed motives.