Witt vectors and the field with one element A. L. Smirnov General Mathematics Seminar of the St. Petersburg Division of Steklov Institute of Mathematics, Russian Academy of Sciences December 24, 2020 14:00
Arithmetic as algebraic geometry A. L. Smirnov Seminar on Algebra, Geometry and Physics, Max Planck Institute for Mathematics February 7, 2012
Some geometry under Spec Z A. L. Smirnov Conference on Algebraic geometry over $F_1$, IHES March 27, 2007
A Riemann–Roch theorem for cohomology operations Alexander Smirnov General Mathematics Seminar of the St. Petersburg Division of Steklov Institute of Mathematics, Russian Academy of Sciences October 16, 2006