All Questions

Let $k$ be a field. Let $\mathcal{C}$ be an abelian category (over $k$). We say that $\mathcal{C}$ has a finite global dimension if there exists integer $n > 0$ such that $$ \operatorname{Ext}^i(M,...

It appears to me (though I may be wrong) that the common opinion is that the main difference between derived noncommutative geometry and Rosenberg's noncommutative 'spaces' is that Rosenberg's version ...

The question of lifting (smooth projective) varieties from an algebraically closed field $k$ of characteristic $p$ to characteristic zero (i.e., to the Witt vectors $W(k)$) is a classical one. It's ...

Many of the standard sources which discuss the Hochschild Kostant Rosenberg theorem and cyclic homology for smooth varieties such as Loday and Weibel's paper "The Hodge Filtration and Cyclic Homology" ...