14 citations · 39 across the 9 of their papers we have counts for
4 papers · 1 filter
Versal deformations of formal arcs
Mikhail Grinberg, David Kazhdan
Let X be a complex algebraic variety, and L(X) be the scheme of formal arcs in X. Let f be an arc whose image is not contained in the singularities of X. We show that the formal ne…
On the specialization to the asymptotic cone
Mikhail Grinberg
Let X be a smooth, connected, closed subvariety of a complex vector space V. The asymptotic cone as(X) is naturally equipped with a nearby cycles sheaf P coming from the specializa…
Morse groups in symmetric spaces corresponding to the symmetric group
Mikhail Grinberg
We describe the Morse groups of the nearby cycles sheaves on the nilcones in three classical symmetric spaces.
A generalization of Springer theory using nearby cycles
Mikhail Grinberg
Let g be a complex semisimple Lie algebra, and f : g --> g/G the adjoint quotient map. Springer theory of Weyl group representations can be seen as the study of the singularities o…