Communications in Analysis and Geometry
Volume 20 (2012)
Derived deformations of schemes
Pages: 529 – 563
We introduce a new approach to constructing derived deformation groupoids, by considering them as parameter spaces for strong homotopy bialgebras. This allows them to be constructed for all classical deformation problems, such as deformations of an arbitrary scheme, in any characteristic.We also give a general approach for studying deformations of diagrams.