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math.RA2016
Bruhat order and nil-Hecke algebras for Weyl groupoids
Iván Angiono, Hiroyuki Yamane
We introduce nil-Hecke algebras for Weyl groupoids. We describe a basis and some properties of these algebras which lead to a notion of Bruhat order for Weyl groupoids.
math.RA2014★ 3 cited
On rigidity of Nichols algebras
Iván Angiono, Mikhail Kochetov, Mitja Mastnak
We study deformations of graded braided bialgebras using cohomological methods. In particular, we show that many examples of Nichols algebras, including the finite-dimensional ones…