activity
19982009
most citedAddendum to: A simultaneous Frobenius splitting for closures of conjugacy classes of nilpotent matrices, by V. B. Mehta and Wilberd van der Kallen

5 citations · 12 across the 4 of their papers we have counts for

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math.RT2009

Rational cohomology of an algebra need not be detected by Frobenius kernels

Wilberd van der Kallen

Friedrich Knop has given an example of a polynomial algebra A in characteristic two with an unusual SL_2 action. We exhibit a nontrivial class in H^1(SL_2,A), not detected by Frobe…