Results 91 to 100 of about 335 (183)
Modeling of Complex Systems by Means of Partial Algebras
Mendel, 2019 Complex systems are very hard to describe by some unified language and calculus. In cases when their nature is very heterogeneous is possible to use with advantage state description.
Jiri Bila +2 more
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Fair Max-Min Diversity Maximization in Streaming and Sliding-Window Models. [PDF]
Entropy (Basel), 2023 Wang Y, Fabbri F, Mathioudakis M, Li J.
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Journal of Combinatorial Theory, Series B, 1981 AbstractThree types of matroid connectivity, including Tutte's, are defined and shown to generalize corresponding notions of graph connectivity. A theorem of Tutte on cyclically 3-connected graphs, is generalized to matroids.
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Approximation operators via TD-matroids on two sets. [PDF]
Soft comput, 2022 Wang G, Mao H.
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Journal of Combinatorial Theory, Series B, 1978 AbstractIn this paper, the basic properties of oriented matroids are examined. A topological representation theorem for oriented matroids is proven, utilizing the notion of an “arrangement of pseudo-hemispheres”. The duality theorem of linear programming is extended to oriented matroids.
Jon Folkman, Jim Lawrence
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Tropical Carathéodory with Matroids. [PDF]
Discrete Comput Geom, 2023 Loho G, Sanyal R.
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Discrete Mathematics, 1981 AbstractWe show, by means of counterexamples, that products with rank rk(M)rk(N) of a matroid M by a matroid N do not exist in general, and that there is no free-est product of M by N. We prove that a canonical product of M by N (having rank rk(M)+rk(N)−1) is a free-est product in a certain (weaker) sense.
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Rough set approximations based on a matroidal structure over three sets. [PDF]
Appl Intell (Dordr), 2023 Wang G, Mao H, Liu C, Zhang Z, Yang L.
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Semi-streaming algorithms for submodular matroid intersection. [PDF]
Math Program, 2023 Garg P, Jordan L, Svensson O.
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Characterizations of Convex spaces and Anti-matroids via Derived Operators
Open Mathematics, 2019 In this paper we use the notion of derived sets to study convex spaces. By axiomatizing the derived sets on convex spaces, we define c-derived operators and restricted c-derived operators. Results show that convex structures can be characterized in terms
Chen Fanhong, Shen Chong
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