Results 81 to 90 of about 5,646,983 (176)

Large automorphism groups of bordered tori

open access: yes
We study large groups of automorphisms of compact orientable bordered Klein surfaces of topological genus one. Here, large means that the order of the group is greater than or equal to 4(g−1), where g ≥ 2 is the algebraic genus of the surface.
Bujalance, E.   +2 more
core   +1 more source

Automorphism Groups of Small (3,3)-homogeneous Logics [PDF]

open access: yes, 2010
We prove that (3,3)-homogeneous logics with 15 or 17 atoms are unique and for 16 atoms such logic does not exist. We also describe the automorphism groups for such logics and construct (3,3)-homogeneos logics (with 19 atoms) with either commutative ...
Sultanbekov F.
core  

The divisibility conjecture for automorphism groups of finite p-groups [PDF]

open access: yesAdvances in Group Theory and Applications, 2020
Jill Dietz
doaj   +1 more source

Free subsemigroups in automorphism group of a polynomial ring of two variables over number fields

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2013
Sufficient conditions under which the semigroup generated by two automorphism of the polynomial ring in two variables over a number field $P$ will be free are given.
Zh. I. Dovghey, M. I. Sumaryuk
doaj   +1 more source

Automorphism groups of smooth quintic threefolds [PDF]

open access: yes, 2019
We study automorphism groups of smooth quintic threefolds. Especially, we describe all the maximal ones with explicit examples of target quintic threefolds. There are exactly $22$ such groups.
Yu, X., Oguiso, K.
core   +1 more source

Semicontinuity of the Automorphism Groups of Domains with Rough Boundary

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2012
Based on some ideas of Greene and Krantz, we study the semicontinuity of automorphism groups of domains in one and several complex variables. We show that semicontinuity fails for domains in , , with Lipschitz boundary, but it holds for domains in with ...
Steven G. Krantz
doaj   +1 more source

On the structure of quantum automorphism groups [PDF]

open access: yes, 2016
We compute the K-theory of quantum automorphism groups of finite dimensional C∗-algebras in the sense of Wang. The results show in particular that the C∗-algebras of functions on the quantum permutation groups S+n are pairwise non-isomorphic for ...
Voigt, Christian, Christian Voigt
core   +1 more source

Automorphism Groups of Small (3,3)-homogeneous Logics

open access: yes, 2020
We prove that (3,3)-homogeneous logics with 15 or 17 atoms are unique and for 16 atoms such logic does not exist. We also describe the automorphism groups for such logics and construct (3,3)-homogeneos logics (with 19 atoms) with either commutative ...
Sultanbekov F.
core  

Finite Vertex Bi-Primitive 2-Arc Transitive Graphs Admitting a Two-Dimensional Linear Group

open access: yesIEEE Access, 2019
A graph is said to be vertex bi-primitive, if it is a bipartite graph, and the setwise stabilizer of its automorphism group acts primitively on two bi-parts.
Xiaohui Hua
doaj   +1 more source

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