Results 71 to 80 of about 104,175 (189)

Cartesian symmetry classes associated with certain subgroups of $S_m$ [PDF]

open access: yesInternational Journal of Group Theory
In this paper, the problem existing $O$-basis for Cartesian symmetry classes is discussed. The dimensions of Cartesian symmetry classes associated with a cyclic subgroup of the symmetric group $S_m$ (generated by a product of disjoint cycles) and the ...
Seyyed Sadegh Gholami, Yousef Zamani
doaj   +1 more source

The surgery obstruction groups of the infinite dihedral group

open access: yes, 2004
This paper computes the quadratic Witt groups (the Wall L-groups) of the polynomial ring Z[t] and the integral group ring of the infinite dihedral group, with various involutions.
Arf   +9 more
core   +2 more sources

Automorphisms of the generalized cluster complex

open access: yesThe American Journal of Combinatorics
We exhibit a dihedral symmetry in the generalized cluster complex defined by Fomin and Reading. Together with diagram symmetries, they generate the automorphism group of the complex.
Matthieu Josuat-Vergès
doaj   +1 more source

The dihedral group $\Dh_5$ as group of symplectic automorphisms on K3 surfaces

open access: yes, 2010
We prove that if a K3 surface $X$ admits $\Z/5\Z$ as group of symplectic automorphisms, then it actually admits $\Dh_5$ as group of symplectic automorphisms.
Garbagnati, Alice
core   +1 more source

On commutation semigroups of dihedral groups [PDF]

open access: yesSemigroup Forum, 2013
For G a group and g in G, we define mappings pg(G) and lg(G) from G into G by pg(x)=[x,g] and lg(x)=[g,x]. We let P(G) and L(G) denote the subsemigroups of the set of all mappings from G to G generated by {pg: g in G} and {lg: g in G}, respectively. P(G) and L(G) are called the right and left commutation semigroup of G, respectively.
DeWolf, Darien   +2 more
openaire   +2 more sources

On Direct Products of Dihedral Groups in Locally Finite Groups

open access: yesИзвестия Иркутского государственного университета: Серия "Математика"
When studying infinite groups, as a rule, some finiteness conditions are imposed. For example, they require that the group be periodic, a Shunkov group, a Frobenius group, or a locally finite group.
I. A. Timofeenko, A.A. Shlepkin
doaj   +1 more source

On the symmetries of some classes of recursive circulant graphs

open access: yesTransactions on Combinatorics, 2014
A recursive-circulant $G(n; d)$ is defined to be acirculant graph with $n$ vertices and jumps of powers of $d$.$G(n; d)$ is vertex-transitive, and has some strong hamiltonianproperties.
Seyed Morteza Mirafzal
doaj  

Dihedral Sieving Phenomena

open access: yes, 2019
Cyclic sieving is a well-known phenomenon where certain interesting polynomials, especially $q$-analogues, have useful interpretations related to actions and representations of the cyclic group.
Rao, Sujit, Suk, Joe
core  

Hurwitz Equivalence in Dihedral Groups

open access: yesThe Electronic Journal of Combinatorics, 2011
In this paper we determine the orbits of the braid group $B_n$ action on $G^n$ when $G$ is a dihedral group and for any $T \in G^n$. We prove that the following invariants serve as necessary and sufficient conditions for Hurwitz equivalence. They are: the product of its entries, the subgroup generated by its entries, and the number of times each ...
openaire   +2 more sources

Spektrum Signless-Laplace dan Spektrum Detour Graf Konjugasi dari Grup Dihedral

open access: yesKubik, 2018
Misalkan G graf berhingga yang tidak memuat loop dan sisi rangkap. Matriks keterhubungan titik A(G) dari graf G adalah matriks dengan entri aij = 1 jika vi terhubung langsung dengan vj dan aij = 0 untuk lainnya.
Abdussakir Abdussakir, Rhoul Khasanah
doaj   +1 more source

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