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math.KT2014★ 26 cited
Koszul property and Bogomolov's conjecture
Leonid Positselski
This is an enhanced version of the author's 1998 Harvard Ph.D. thesis, as published by IMRN in 2005. We propose an extension of Bogomolov's conjecture about commutator subgroups of…
math.KT2014
Categorical Bockstein sequences
Leonid Positselski
We construct the reduction of an exact category with a twist functor with respect to an element of its graded center in presence of an exact-conservative forgetful functor annihila…