Results 1 to 10 of about 1,945,494 (283)

Fuzzy $e$-regular spaces and strongly $e$-irresolute mappings [PDF]

Sahand Communications in Mathematical Analysis, 2018
The aim of this paper is to introduce fuzzy ($e$, almost) $e^{*}$-regular spaces in $check{S}$ostak's fuzzy topological spaces. Using the $r$-fuzzy $e$-closed sets, we define $r$-($r$-$theta$-, $r$-$etheta$-) $e$-cluster points and their properties ...
Veerappan Chandrasekar, Somasundaram Parimala   +1 more
doaj   +1 more source

Strongly Regular Graphs as Laplacian Extremal Graphs [PDF]

, 2014
The Laplacian spread of a graph is the difference between the largest eigenvalue and the second-smallest eigenvalue of the Laplacian matrix of the graph.
Lin, Fan-Hsuan, Weng, Chih-wen
core  

Cyclotomy and Strongly Regular Graphs [PDF]

Journal of Algebraic Combinatorics, 1999
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Brouwer, A. E., Wilson, R. M., Xiang, Qing   +2 more
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Strongly regular edge-transitive graphs [PDF]

, 2009
In this paper, we examine the structure of vertex- and edge-transitive strongly regular graphs, using normal quotient reduction. We show that the irreducible graphs in this family have quasiprimitive automorphism groups, and prove (using the ...
Morris, Joy, Praeger, Cheryl E., Spiga, Pablo   +2 more
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Strongly regular rings

Journal of Algebra, 1991
Let A be a d-dimensional regular local ring with maximal ideal \({\mathfrak m}\), and let \(\lambda\) be an element of \({\mathfrak m}\), \(\lambda\not\in {\mathfrak m}^ 2\). The question addressed in this paper is whether the ring \(A[\lambda^{-1}]\) is super-regular, in the sense that all its maximal ideals can be generated by d-1 elements.
openaire   +1 more source

Strongly regular graphs

Discrete Mathematics, 1975
Translation from Discrete Math. 13, 357-381 (1975; Zbl 0311.05122).
openaire   +4 more sources

Another construction of edge-regular graphs with regular cliques

, 2018
We exhibit a new construction of edge-regular graphs with regular cliques that are not strongly regular. The infinite family of graphs resulting from this construction includes an edge-regular graph with parameters $(24,8,2)$.
Greaves, Gary R. W., Koolen, J. H.
core   +1 more source

Non-ergodic phases in strongly disordered random regular graphs

, 2016
We combine numerical diagonalization with a semi-analytical calculations to prove the existence of the intermediate non-ergodic but delocalized phase in the Anderson model on disordered hierarchical lattices.
Altshuler, B. L., Cuevas, E., Ioffe, L. B., Kravtsov, V. E.   +3 more
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On strongly Π-regular ideals

Journal of Pure and Applied Algebra, 2005
For an associative ring \(R\) with identity, the authors introduce the notion of strongly \(\pi\)-regular ideal as an ideal \(I\) of \(R\) with the property that for any \(x\in I\), there exist a natural number \(n\) and an element \(y\in I\) such that \(x^n=x^{n+1}y\). They show that every regular square matrix over a strongly \(\pi\)-regular ideal of
Chen, Huanyin, Chen, Miaosen
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GRAPHS \(\Gamma\) OF DIAMETER 4 FOR WHICH \(\Gamma_{3,4}\) IS A STRONGLY REGULAR GRAPH WITH \(\mu=4,6\)

Ural Mathematical Journal
We consider antipodal graphs \(\Gamma\) of diameter 4 for which  \(\Gamma_{1,2}\) is a strongly regular graph. A.A. Makhnev and D.V. Paduchikh noticed that, in this case, \(\Delta=\Gamma_{3,4}\) is a strongly regular graph without triangles.
Alexander A. Makhnev, Mikhail P. Golubyatnikov, Konstantin S. Efimov   +2 more
doaj   +1 more source