Results 1 to 10 of about 63,374 (200)
Linear Codes from Two Weakly Regular Plateaued Balanced Functions [PDF]
Entropy, 2023 Linear codes with a few weights have been extensively studied due to their wide applications in secret sharing schemes, strongly regular graphs, association schemes, and authentication codes.
Shudi Yang, Tonghui Zhang, Ping Li
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Quasi-balanced weighing matrices, signed strongly regular graphs and association schemes
Finite Fields and Their Applications, 2022 25 ...
Hadi Kharaghani, Thomas Pender, Sho Suda
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Two Classes of Linear Codes From Weil Sums
IEEE Access, 2020 In this article, we consider two classes of $p$ -ary linear codes. This article is a generalization of the recent construction methods given by Jian, Lin and Feng (2019).
Hong Lu, Shudi Yang
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Symmetry, 2023 In this paper, in the environment of Euclidean Jordan algebras, we establish some inequalities over the Krein parameters of a symmetric association scheme and of a strongly regular graph. Next, we define the modified Krein parameters of a strongly regular graph and establish some admissibility conditions over these parameters.
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Pseudocyclic association schemes and strongly regular graphs
European Journal of Combinatorics, 2010 Let X be a pseudocyclic association scheme in which all the nontrivial relations are strongly regular graphs with the same eigenvalues. We prove that the principal part of the first eigenmatrix of X is a linear combination of an incidence matrix of a symmetric design and the all-ones matrix.
Ikuta, Takuya, Munemasa, Akihiro
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A strongly regular decomposition of the complete graph and its association scheme
Finite Fields and Their Applications, 2017 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Hadi Kharaghani, Sara Sasani, Sho Suda
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Skew-symmetric association schemes with two classes and strongly regular graphs of type L 2n?1(4n?1) [PDF]
Acta Applicandae Mathematicae, 1992 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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A two-fold cover of strongly regular graphs with spreads and association schemes of class five [PDF]
Designs, Codes and Cryptography, 2014 We consider imprimitive association schemes of class four which are two-fold covers of strongly regular graphs with spreads. It will be shown that a two-fold cover of a strongly regular graph with a spread provides a five class fission scheme of the imprimitive scheme of class four.
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A distribution invariant for association schemes and strongly regular graphs
Linear Algebra and its Applications, 1984 AbstractIn an association scheme X with symmetric classes the projections Ji(x) of the points x ϵ X into the given Eigenspace Ei are considered. In particular the smallest number of points whose projection vectors are strictly on one side of a hyperlane is called the distribution invariant (with respect to Ei) of the association scheme X.
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Journal of Combinatorial Theory, Series B, 1971 AbstractThe section of a non-degenerate Hermitian variety VN−1 by a polar hyperplane in PG(N, q2) and the number of u-flats, 0 ≤ u ≤ [(N − 1)2], contained in a VN−1 are derived. From the incidence of external points, tangent lines and secant lines with respect to non-degenerate Hermitian varieties in PG(2, q2) and PG(3, q2) and the incidence of ...
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