Results 31 to 40 of about 16,356,505 (288)
On the Turán number of some ordered even cycles [PDF]
European Journal of Combinatorics, 2018 10 pages, 1 figure; added references and some ...
Ervin Györi +5 more
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Affine difference sets of even order
Journal of Combinatorial Theory, Series A, 1989 Let G be a direct sum of a group of order \(n+1\) and of an Abelian group N of order n-1. If n is even (different from 2), and G admits an affine difference set relative to N then \(n=4k\) and N admits a \((4k-1,4k-1,k-1)\) difference set. Proofs, variations and corollaries are very interesting; for brevity we quote only that there is no nilpotent ...
Arasu, K.T., Jungnickel, Dieter
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Asymptotic Properties of Neutral Differential Equations with Variable Coefficients
Axioms, 2020 The aim of this work is to study oscillatory behavior of solutions for even-order neutral nonlinear differential equations. By using the Riccati substitution, a new oscillation conditions is obtained which insures that all solutions to the studied ...
Omar Bazighifan +2 more
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Oscillatory behavior of even-order nonlinear differential equations with a sublinear neutral term [PDF]
Opuscula Mathematica, 2019 The authors present a new technique for the linearization of even-order nonlinear differential equations with a sublinear neutral term. They establish some new oscillation criteria via comparison with higher-order linear delay differential inequalities ...
John R. Graef +2 more
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Conjugacy of Self-Adjoint Difference Equations of Even Order
Abstract and Applied Analysis, 2011 We study oscillation properties of 2n-order Sturm-Liouville difference equations. For these equations, we show a conjugacy criterion using the p-criticality (the existence of linear dependent recessive solutions at ∞ and -∞).
Petr Hasil
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Finite groups whose maximal subgroups of even order are MSN-groups
Open Mathematics, 2022 A finite group GG is called an MSN-group if all maximal subgroups of the Sylow subgroups of GG are subnormal in GG. In this article, we investigate the structure of finite groups GG such that GG is a non-MSN-group of even order in which every maximal ...
Wang Wanlin, Guo Pengfei
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A New Approach in the Study of Oscillation Criteria of Even-Order Neutral Differential Equations
Mathematics, 2020 Based on the comparison with first-order delay equations, we establish a new oscillation criterion for a class of even-order neutral differential equations. Our new criterion improves a number of existing ones. An illustrative example is provided.
Osama Moaaz +2 more
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Oscillation Criteria of Higher-order Neutral Differential Equations with Several Deviating Arguments
Mathematics, 2020 This work is concerned with the oscillatory behavior of solutions of even-order neutral differential equations. By using the technique of Riccati transformation and comparison principles with the second-order differential equations, we obtain a new ...
Osama Moaaz +2 more
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Latin cubes of even order with forbidden entries [PDF]
European Journal of Combinatorics, 2020 We consider the problem of constructing Latin cubes subject to the condition that some symbols may not appear in certain cells. We prove that there is a constant $γ> 0$ such that if $n=2t$ and $A$ is a $3$-dimensional $n\times n\times n$ array where every cell contains at most $γn$ symbols, and every symbol occurs at most $γn$ times in every line of
Casselgren, Carl Johan, Anh Pham, Lan
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On regular handicap graphs of even order
Electronic Notes in Discrete Mathematics, 2017 Abstract Let G = ( V , E ) be a simple graph of order n. A bijection f : V → { 1 , 2 , … , n } is a handicap labeling of G if there exists an integer l such that ∑ u ∈ N ( v ) f ( u ) = l + f ( v ) for all v ∈ V , where N(v) is the set of all vertices adjacent to v.
Dalibor Froncek +6 more
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