Results 121 to 130 of about 104,157 (229)

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

Ree groups as automorphism groups of block designs

open access: yesExamples and Counterexamples
A recent classification of flag-transitive 2-designs with parameters (v,k,λ) whose replication number r is coprime to λ gives rise to eight possible infinite families of 2-designs, some of which are with new parameters.
Ashraf Daneshkhah
doaj  

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