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The automorphism groups of foliations with transverse linear connection

open access: yesOpen Mathematics, 2013
Zhukova Nina, Dolgonosova Anna
doaj   +1 more source

Tree actions of automorphism groups

open access: yes, 2000
We introduce conditions on a group action on a tree that are sufficient for the action to extend to the automorphism group. We apply this to two different classes of one-relator groups: certain Baumslag-Solitar groups and one-relator groups with centre ...
Raptis, E   +3 more
core  

Isometries of Spacetimes Without Observer Horizons. [PDF]

open access: yesCommun Math Phys
García-Heveling L, Zeghib A.
europepmc   +1 more source

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