The topology of a semisimple Lie group is essentially unique

Details The topology of a semisimple Lie group is essentially unique The topology of a semisimple Lie group is essentially unique

2010-09-28

arxiv.org/abs/1009.5457v6

Mathematics

Group Theory

To appear in: Advances in Mathematics

Scientific paper

We study locally compact group topologies on semisimple Lie groups. We show that the Lie group topology on such a group $S$ is very rigid: every 'abstract' isomorphism between $S$ and a locally compact and $\sigma$-compact group $\Gamma$ is automatically a homeomorphism, provided that $S$ is absolutely simple. If $S$ is complex, then non-continuous field automorphisms of the complex numbers have to be considered, but that is all.

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