ScalingStacks

0NYE

Theorem 5.3. Suppose p:Xโ†’Yp:X\to Y is a map of perfect stacks satisfying descent. Then there is a canonical equivalence

๐’ตโก(QCโก(Xร—YX))โ‰ƒQCโก(โ„’โ€‹Y)\mathcal{Z}(\qc(X\times_{Y}X))\simeq\qc(\mathcal{L}Y)

such that the forgetful functor ๐”ท:๐’ตโก(QCโก(Xร—YX))โ†’QCโก(Xร—YX)\mathfrak{z}:\mathcal{Z}(\qc(X\times_{Y}X))\to\qc(X\times_{Y}X) is given by the correspondence ฮดโˆ—โ€‹ฯ€โˆ—:QCโก(โ„’โ€‹Y)โ†’QCโก(Xร—YX)\delta_{*}\pi^{*}:\qc(\mathcal{L}Y)\to\qc(X\times_{Y}X).

Original mathematics by the credited authors. Source collection and HTML conversion remain in progress.

David Ben-Zvi, John Francis, David Nadler

Original source: arXiv:0805.0157v5