Results 121 to 130 of about 22,632 (241)

Factorization theorems for strong maps between matroids of arbitrary cardinality

open access: yesOpen Mathematics, 2016
In this paper we present factorization theorems for strong maps between matroids of arbitrary cardinality. Moreover, we present a new way to prove the factorization theorem for strong maps between finite matroids.
Mao Hua
doaj   +1 more source

Generate $\Delta$-matroids from matroids

open access: yes, 2021
Comment: 8 pages, 2 ...
Avohou, Rémi Cocou   +2 more
openaire   +1 more source

Modeling of Complex Systems by Means of Partial Algebras

open access: yesMendel, 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
doaj   +1 more source

Convex Matroid Optimization [PDF]

open access: yesSIAM Journal on Discrete Mathematics, 2003
We consider a problem of optimizing convex functionals over matroid bases. It is richly expressive and captures certain quadratic assignment and clustering problems. While generally NP-hard, we show it is polynomial time solvable when a suitable parameter is restricted.
openaire   +3 more sources

Tropical Carathéodory with Matroids. [PDF]

open access: yesDiscrete Comput Geom, 2023
Loho G, Sanyal R.
europepmc   +1 more source

Orthogonal matroids over tracts

open access: yesForum of Mathematics, Sigma
We generalize Baker–Bowler’s theory of matroids over tracts to orthogonal matroids, define orthogonal matroids with coefficients in tracts in terms of Wick functions, orthogonal signatures, circuit sets and orthogonal vector sets, and establish basic ...
Tong Jin, Donggyu Kim
doaj   +1 more source

Rough set approximations based on a matroidal structure over three sets. [PDF]

open access: yesAppl Intell (Dordr), 2023
Wang G, Mao H, Liu C, Zhang Z, Yang L.
europepmc   +1 more source

Semi-streaming algorithms for submodular matroid intersection. [PDF]

open access: yesMath Program, 2023
Garg P, Jordan L, Svensson O.
europepmc   +1 more source

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