Skip to main content

Timeline for Examples of toposes for analysts

Current License: CC BY-SA 3.0

5 events
when toggle format what by license comment
Dec 19, 2013 at 14:01 comment added Simon Henry Maybe, but after some research, It seems that the paper "Orbifolds, Sheaves and Groupoids" Of Moerdjik sugests that orbifolds can also be defined as separated toposes with a structural sheaf which are locally manifolds (in the sense that they admit a slice which is a manifolds)
Dec 19, 2013 at 12:25 comment added Dan Petersen I think he just means that orbifolds are most naturally thought of as stacks, i.e. sheaves of groupoids on a category with a Grothendieck topology, and sheaves on a category with a Grothendieck topology is an (or the) example of a topos.
Dec 19, 2013 at 11:02 comment added Simon Henry Could you develop or give a reference on the fact that "the right definition of orbifold is build on topos" ? Because apparently I've never seen this definition... Does it mean that an orbifold can be defined as some kind of structure on an underlying separated topos ? thank you !
S Dec 19, 2013 at 1:25 history answered Anton Petrunin CC BY-SA 3.0
S Dec 19, 2013 at 1:25 history made wiki Post Made Community Wiki by Anton Petrunin