4 papers
Truncated factorized perverse sheaves on Sym(C)
Giovanna Carnovale, Francesco Esposito, Lleonard Rubio y Degrassi
Kapranov and Schechtman defined the category FP of factorized perverse sheaves on Sym(C) smooth along the stratification given by multiplicities and with values in a braided monoid…
Outer derivations on blocks of group algebras
Benjamin Briggs, Lleonard Rubio y Degrassi
Let be a finite group whose order is divisible by the characteristic of a field . If is a block of with defect group , we prove that the space of derivations on…
Approximation of graded bialgebras
Giovanna Carnovale, Francesco Esposito, Lleonard Rubio y Degrassi
Motivated by an equivalence of categories established by Kapranov and Schechtman, we introduce, for each non-negative integer d, the category of connected bialgebras modulo d+1. We…
On the first relative Hochschild cohomology and contracted fundamental group
Jonathan Lindell, Lleonard Rubio y Degrassi
In this paper we investigate the Lie algebra structure of the first relative Hochschild cohomology and its relation with the relative notion of fundamental group. Let be fini…