On the Topologies of ind-Varieties and related Irreducibility Questions

Details On the Topologies of ind-Varieties and related Irreducibility Questions On the Topologies of ind-Varieties and related Irreducibility Questions

2011-09-19

arxiv.org/abs/1109.4088v1

Mathematics

Algebraic Geometry

10 pages

Scientific paper

In the literature there are two ways of endowing an affine ind-variety with a topology. One possibility is due to Shafarevich and the other to Kambayashi. In this paper we specify a large class of affine ind-varieties where these two topologies differ. We give an example of an affine ind-variety that is reducible with respect to Shafarevich's topology, but irreducible with respect to Kambayashi's topology. Moreover, we give a counter-example of a supposed irreducibility criterion of Shafarevich which is different from a counter-example given by Homma. We finish the paper with an irreducibility criterion similar to the one given by Shafarevich.

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