scholarly journals On classifying objects with specified groups of automorphisms, friendly subgroups, and Sylow tower groups

2018 ◽  
Vol 74 (3) ◽  
pp. 233-242
Author(s):  
Leonard Soicher
2000 ◽  
Vol 231 (2) ◽  
pp. 561-573
Author(s):  
Ulderico Dardano ◽  
Bettina Eick ◽  
Martin Menth

1990 ◽  
Vol 13 (1) ◽  
pp. 135-138
Author(s):  
A. B. Thaheem ◽  
Noor Mohammad

Let{αt:t∈R}and{βt:t∈R}be two commuting one-parameter groups of∗-automorphisms of a von Neumann algebraMsuch thatαt+α−t=βt+β−tfor allt∈R. The purpose of this note is to provide a simple and short proof of the central decomposition result:αt=βtonMpand aαt=β−tonM(1−p)for a central projectionp∈M, without using the theory of spectral subspaces.


1974 ◽  
Vol 13 (5) ◽  
pp. 306-311 ◽  
Author(s):  
G. A. Noskov ◽  
V. A. Roman'kov

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