Some equivariant constructions in noncommutative algebraic geometry
arXiv:0811.4770
Abstract
We here present rudiments of an approach to geometric actions in noncommutative algebraic geometry, based on geometrically admissible actions of monoidal categories. This generalizes the usual (co)module algebras over Hopf algebras which provide affine examples. We introduce a compatibility of monoidal actions and localizations which is a distributive law. There are satisfactory notions of equivariant objects, noncommutative fiber bundles and quotients in this setup.
20 pages, surveys basics of my long term project; v2: major revision in all parts; last section on search for Leibniz groups has been omitted, but its improved version can be found on my webpage at http://www.irb.hr/korisnici/zskoda/leibnizManifesto.pdf