The purpose of the book is to take stock of the situation concerning Algebra via Category Theory in the last fifteen years, where the new and synthetic notions of Mal'cev, protomodular, homological and semi-abelian categories emerged. These notions force attention on the fibration of points and allow a unified treatment of the main algebraic: ...
This book gives an exposition of the relations among the following three topics: monoidal tensor categories (such as a category of representations of a quantum group), 3-dimensional topological quantum field theory, and 2-dimensional modular functors (which naturally arise in 2-dimensional conformal field theory). The following examples are ...
Introducing the equivariant derived category of sheaves, this monograph also provides applications to the equivariant intersection cohomology. This theory should benefit specialists in representation theory, algebraic geometry or topology.
An important theorem by Beilinson describes the bounded derived category of coherent sheaves on $\mathbb{P}^n$, yielding in particular a resolution of every coherent sheaf on $\mathbb{P}^n$ in terms of the vector bundles $\Omega_{\mathbb{P}^n}^j(j)$ for $0\le j\le n$. This theorem is here extended to weighted projective spaces. To this purpose we ...
Robin Hartshorne's classical 1966 book "Residues and Duality" ["RD"] developed Alexandre Grothendieck's ideas for a pseudofunctorial variance theory of residual complexes and duality for maps of noetherian schemes. The three articles in this volume rework the main parts of the last two chapters in "RD", in greater generality - for Cousin complexes ...
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