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math.DG2005★ 42 cited
Stability and invariants of Hilsum-Skandalis maps
Janez Mrcun
We consider principal bundles as generalized morphisms between topological groupoids. In the category of these generalized morphisms two topological groupoids are isomorphic if and…
math.DG2003★ 5 cited
On isomorphisms of algebras of smooth functions
Janez Mrcun
We show that for any smooth Hausdorff manifolds M and N, which are not necessarily second countable, paracompact or connected, any isomorphism from the algebra of smooth (real or c…