eng
episciences.org
Communications in Mathematics
1804-1388
2336-1298
2020-10-11
Volume 28 (2020), Issue 2...
10.2478/cm-2020-0020
9512
journal article
On tangent cones to Schubert varieties in type E
Mikhail V. Ignatyev
Aleksandr A. Shevchenko
We consider tangent cones to Schubert subvarieties of the flag variety G/B, where B is a Borel subgroup of a reductive complex algebraic group G of type E 6, E 7 or E 8. We prove that if w 1 and w 2 form a good pair of involutions in the Weyl group W of G then the tangent cones Cw 1 and Cw 2 to the corresponding Schubert subvarieties of G/B do not coincide as subschemes of the tangent space to G/B at the neutral point.
https://cm.episciences.org/9512/pdf
[MATH]Mathematics [math]