Smoothness of Schubert varieties indexed by involutions in finite simply laced types

Axel Hultman; Vincent Umutabazi

arxiv: 1905.09573 · v1 · pith:D2NX627Fnew · submitted 2019-05-23 · 🧮 math.CO

Smoothness of Schubert varieties indexed by involutions in finite simply laced types

Axel Hultman , Vincent Umutabazi This is my paper

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keywords finiteindexedlacedschubertsimplytypeselementevery

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We prove that in finite, simply laced types, every Schubert variety indexed by an involution which is not the longest element of some parabolic subgroup is singular.

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Smoothness of Schubert varieties indexed by involutions in finite simply laced types

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