Sufficient conditions for a group of automorphisms of a Riemann surface to be its full automorphism group
β Scribed by Peter Turbek
- Publisher
- Elsevier Science
- Year
- 1998
- Tongue
- English
- Weight
- 841 KB
- Volume
- 123
- Category
- Article
- ISSN
- 0022-4049
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
It is shown that, for a minimal action a of a compact Kac algebra K on a factor A, the group of all automorphisms leaving the fixed-point algebra A a pointwise invariant is topologically isomorphic to the intrinsic group of the dual Kac algebra # K K. As an application, in the case where dim K o 1,
Let M be a factor with separable predual and G a compact group of automorphisms of M whose action is minimal, i.e., M G$ & M=C, where M G denotes the G-fixed point subalgebra. Then every intermediate von Neumann algebra M G /N/M has the form N=M H for some closed subgroup H of G. An extension of thi
acceptable if they are not as widely known as they deserve.