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The lattice of regular subsemigroups of a regular semigroup
Vestnik St. Petersburg University: Mathematics, 2007zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Regular factors of regular graphs
Journal of Graph Theory, 1985AbstractGiven r ⩾ 3 and 1 ⩽ λ ⩽ r, we determine all values of k for which every r‐regular graph with edge‐connectivity λ has a k‐factor.
Bollobás, Béla +2 more
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Regular Graphs, Eigenvalues and Regular Factors
Journal of Graph Theory, 2011AbstractIn this article, we obtain a sufficient condition for the existence of regular factors in a regular graph in terms of its third largest eigenvalue. We also determine all values of k such that every r‐regular graph with the third largest eigenvalue at most has a k‐factor.
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Proceedings of the London Mathematical Society, 1964
IN (11) J. H. C. Whitehead introduced the theory of regular neighbourhoods, which has become a basic tool in combinatorial topology. We extend the theory in three ways. First we relativize the concept, and introduce the regular neighbourhood N of X mod Y in M, where X and Y are two compact polyhedra in the manifold M, satisfying a certain condition ...
Hudson, J. F. P., Zeeman, E. C.
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IN (11) J. H. C. Whitehead introduced the theory of regular neighbourhoods, which has become a basic tool in combinatorial topology. We extend the theory in three ways. First we relativize the concept, and introduce the regular neighbourhood N of X mod Y in M, where X and Y are two compact polyhedra in the manifold M, satisfying a certain condition ...
Hudson, J. F. P., Zeeman, E. C.
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A class of regular semigroups with regular *- transversals
Semigroup Forum, 2002A regular semigroup \(S\) is called a regular \(*\)-semigroup if there is a unary operation \(*\) which satisfies the following three conditions: (i) \(xx^*x=x\), (ii) \((x^*)^*=x\), and (iii) \((xy)^*=y^*x^*\), for any \(x,y\in S\) [\textit{T. E. Nordahl, H. E. Scheiblich}, Semigroup Forum 16, 369-377 (1978; Zbl 0408.20043)]. If there a subsemigroup \(
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Completely Regular and ω-Regular Spaces
Proceedings of the American Mathematical Society, 1981Kent, Darrell C., Richardson, G. D.
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