نتایج جستجو برای: strongly topologically regular

تعداد نتایج: 342698  

Journal: :Australasian J. Combinatorics 2014
Antonio Cossidente Angelo Sonnino

We provide a new construction of the strongly regular graphs associated with the two sporadic simple groups M22 and HS. Further, we give some new constructions of other known strongly regular graphs by taking the orbits of a certain subgroup of M22 on the planes of the Hermitian variety H(5, 4). These geometric constructions can be used to produce cap codes with large parameters and automorphis...

Journal: :Combinatorica 1996
Van H. Vu

For every n positive integer we show the construction of a strongly regular graph of order at most 2 which contains every graph of ordered n as a subgraph. The estimation concerning the construction is best possible.

Journal: :Electr. J. Comb. 2000
Edward Spence

In a previous paper it was established that there are at least 27 non-isomorphic strongly regular (40, 12, 2, 4) graphs. Using a different and more efficient method we have re-investigated these graphs and have now been able to determine them all, and so complete the classification. We have discovered that there are precisely 28 non-isomorphic (40, 12, 2, 4) strongly regular graphs. The one tha...

Journal: :J. Comb. Theory, Ser. B 2012
Tao Feng Qing Xiang

Article history: Received 24 August 2010 Available online 8 November 2011

Journal: :Ars Comb. 2013
Ilaria Cardinali Bart De Bruyn

Let ∆ be one of the dual polar spaces DQ(8, q), DQ−(7, q), and let e : ∆ → Σ denote the spin-embedding of ∆. We show that e(∆) is a two-intersection set of the projective space Σ. Moreover, if ∆ ∼= DQ−(7, q), then e(∆) is a (q + 1)-tight set of a nonsingular hyperbolic quadric Q(7, q) of Σ ∼= PG(7, q). This (q + 1)-tight set gives rise to more examples of (q + 1)-tight sets of hyperbolic quadri...

Journal: :Transactions of the American Mathematical Society 1970

Journal: :journal of sciences, islamic republic of iran 2013
b. davvaz

in this paper, the notion of fuzzy n-polygroups (fn -polygroups) is introduced and some related properties are investigated. in this regards, the concepts of normal  f-subpolygroups and homomorphisms of fn-polygroups are adopted. also, the quotient of fn-polygroups by defining regular relations are studied. finally, the classical isomorphism theorems of groups are generalized to fn-polygroups p...

Notions of strongly regular, regular and left(right) regular $Gamma$−semigroupsare introduced. Equivalent conditions are obtained through fuzzy notion for a$Gamma$−semigroup to be either strongly regular or regular or left regular.

Journal: :Eur. J. Comb. 2002
Stefko Miklavic

Let G be a non-bipartite strongly regular graph on n vertices of valency k. We prove that if G has a distance-regular antipodal cover of diameter 4, then k ≤ 2(n + 1)/5 , unless G is the complement of triangular graph T (7), the folded Johnson graph J (8, 4) or the folded halved 8-cube. However, for these three graphs the bound k ≤ (n − 1)/2 holds. This result implies that only one of a complem...

2015
COSMIN PELEA IOAN PURDEA LIANA STANCA

Our general investigation of universal algebras obtained from multialgebras via strongly regular equivalence relations provides useful general results concerning fuzzy set topics related to multialgebra theory. We also give many hints on how to connect our approach with the results from the literature. Acknowledgement. The first author was supported by the CNCS-UEFISCDI grant PNII-RU-TE-2011-3-...

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