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Wilberd van der Kallen's user avatar
Wilberd van der Kallen's user avatar
Wilberd van der Kallen's user avatar
Wilberd van der Kallen
  • Member for 14 years, 9 months
  • Last seen more than a month ago
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News of potential interest to the MO community
Oct 5, 2020
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53
Conceptual reason why the sign of a permutation is well-defined?
35
How to prove this polynomial always has integer values at all integers?
21
Universal cover of SL2(R) admits no central extensions?
14
Is Lusztig's conjecture solved?
14
Tensor product of rings of Witt vectors