2 papers
math.AG2026
Motives, cohomological invariants and the Freudenthal magic square
Nikita Geldhauser, Alexander Henke, Maksim Zhykhovich
We investigate cohomological invariants and motivic invariants of semisimple algebraic groups arising in the Freudenthal magic square. Besides, we show that if the Rost invariant o…
math.AG2025
-invariant of linear algebraic groups of outer type
Nikita Geldhauser, Maksim Zhykhovich
We extend the notion of the -invariant to arbitrary semisimple linear algebraic groups and provide complete decompositions for the normed Chow motives of all generically quasi-s…