Results 81 to 90 of about 1,094 (186)

More on the Schur group of a commutative ring

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1985
The Schur group of a commutative ring, R, with identity consists of all classes in the Brauer group of R which contain a homomorphic image of a group ring RG for some finite group G.
R. A. Mollin
doaj   +1 more source

Automorphisms of graph groups

open access: yesJournal of Algebra, 1989
Given a graph \(\Gamma=(V,E)\), the graph group \(F\langle\Gamma\rangle\) is the group with presentation \(\langle V\mid [E]\rangle\), where \([E]\) denotes the set of commutators \(\{[a,b]\mid\{a,b\}\in E\}\). The graph group \(F\langle\Gamma\rangle\) is modeled to be a group analog of the graph algebra K(\(\Gamma)\) generated as a free associative ...
openaire   +2 more sources

The group of automorphism of the Fermat curve

open access: yesRevista Integración, 2016
Pavlos Tzermias en su artí ulo The group of automorphisms of the Fermat urve (ver [7℄), prueba que el grupo de automorfismos de las urvas de Fermat proye tivas en ara terísti a 0 es el produ to semidire to de la suma dire ta de 2 opias del grupo í li o ...
Marby Bolaños Ortiz   +2 more
doaj  

Flux Landscape with enhanced symmetry not on SL(2, ℤ) elliptic points

open access: yesJournal of High Energy Physics
We study structures of solutions for SUSY Minkowski F-term equations on two toroidal orientifolds with h 2,1 = 1. Following our previous study [1], with fixed upper bounds of a flux D3-brane charge N flux, we obtain a whole Landscape and a distribution ...
Keiya Ishiguro   +3 more
doaj   +1 more source

Computing automorphism groups of shifts using atypical equivalence classes

open access: yesDiscrete Analysis, 2016
Computing automorphism groups of shifts, using atypical equivalence classes, Discrete Analysis 2016:3, 24 pp. Symbolic dynamics is about dynamical systems of the following type.
Ethan Coven, Anthony Quas, Reem Yassawi
doaj   +1 more source

Automorphisms of the Dihedral Groups [PDF]

open access: yesProceedings of the National Academy of Sciences, 1942
Not ...
openaire   +3 more sources

Some infinite classes of asymmetric nearly Hamiltonian snarks

open access: yesLe Matematiche, 2010
We determine the full automorphism group of each member of three infinite families of connected cubic graphs which are snarks. A graph is said to be nearly hamiltonian if it has a cycle which contains all vertices but one.
Carla Fiori, Beatrice Ruini
doaj  

On the symmetry of odd Leech lattice CFT

open access: yesJournal of High Energy Physics
We show that the Mathieu groups M 24 and M 23 in the isometry group of the odd Leech lattice do not lift to subgroups of the automorphism group of its lattice vertex operator (super)algebra.
Masaki Okada
doaj   +1 more source

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