arXiv subjects

Michaël Balan

Publications and source records attributed to Michaël Balan.

2 recordsLinked to original sources

arXiv2013

Standard Monomial Theory for desingularized Richardson varieties in the flag variety GL(n)/B

We consider a desingularization Gamma of a Richardson variety X_w^v=X_w \cap X^v in the flag variety Fl(n)=GL(n)/B, obtained as a fibre of a projection from a certain Bott-Samelson variety Z. We then construct a basis of the homogeneous coordinate ring of Gamma inside Z, indexed by combinatorial objects which we call w_0-standard tableaux.

math.AG↗

arXiv2011

Multiplicity on a Richardson variety in a cominuscule G/P

We show that in a cominuscule partial flag variety G/P, the multiplicity of an arbitrary point on a Richardson variety X_w^v = X_w \cap X^v is the product of its multiplicities on the Schubert varieties X_w and X^v.

math.AG↗