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» On the Orbits of Singer Groups and Their Subgroups
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JSYML
2006
76views more  JSYML 2006»
13 years 4 months ago
Diagonal actions and Borel equivalence relations
We investigate diagonal actions of Polish groups and the related intersection operator on closed subgroups of the acting group. The Borelness of the diagonal orbit equivalence rela...
Longyun Ding, Su Gao
IJAC
2007
116views more  IJAC 2007»
13 years 4 months ago
On the Complexity of the Whitehead Minimization Problem
The Whitehead minimization problem consists in finding a minimum size element in the automorphic orbit of a word, a cyclic word or a finitely generated subgroup in a finite rank...
Abdó Roig, Enric Ventura, Pascal Weil