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Functions with a finite number of negative squares on compact groups

✍ Scribed by Martin Blümlinger


Publisher
Springer
Year
1996
Tongue
English
Weight
247 KB
Volume
67
Category
Article
ISSN
0003-889X

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📜 SIMILAR VOLUMES


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In this work, we give a sufficient algebraic condition for the local observability problem of invariant control systems on compact Lie groups such that the output map is not differentiable. In particular, the usual techniques involving Lie derivatives do not work. Our approach comes from the represe

On the number of countably compact group
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We show under MA(σ -centered) the existence of at least (2 ω ) + non-homeomorphic topological group topologies on the free Abelian group of size 2 ω which make it countably compact and separable. In particular, under GCH the maximum possible number of such topologies is attained. As a corollary, we