No small subgroup

In mathematics, especially in topology, a topological group G is said to have no small subgroup if there exists a neighborhood U of the identity that contains no nontrivial subgroup of G. An abbreviation '"NSS"' is sometimes used. A basic example of a topological group with no small subgroup is the general linear group over the complex numbers.

A locally compact, separable metric, locally connected group with no small subgroup is a Lie group. (cf. Hilbert's fifth problem.)

References

This article is issued from Wikipedia - version of the 6/10/2015. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.