A counterexample to a conjecture of Steinberg

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• Mikko Korhonen
• Tuesday 08 October 2019, 17:00-18:00
• PHYW-SR2 (106).

If you have a question about this talk, please contact Chris Parker.

Let G be a semisimple algebraic group over an algebraically closed field K. At the 1966 ICM in Moscow, Robert Steinberg conjectured that two elements of G are conjugate if and only if their images are conjugate under every rational irreducible representation of G. The conjecture was proven by Steinberg in the case where K has characteristic zero, and also in the case where the two elements are semisimple. In this talk, I will present a counterexample which was discovered by computational methods.

This talk is part of the Algebra Seminar series.

This talk is included in these lists:

• Algebra Seminar
• PHYW-SR2 (106)
• School of Mathematics Events

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