Results 1 to 10 of about 4,009 (153)

Matroid bases with cardinality constraints on the intersection. [PDF]

open access: yesMath Program, 2022
AbstractGiven two matroids $$\mathcal {M}_{1} = (E, \mathcal {B}_{1})$$ M 1 = ( E , B
Lendl S, Peis B, Timmermans V.
europepmc   +7 more sources

Characterizing matroids whose bases form graphic delta-matroids [PDF]

open access: yesEuropean Journal of Combinatorics, 2022
We introduce delta-graphic matroids, which are matroids whose bases form graphic delta-matroids. The class of delta-graphic matroids contains graphic matroids as well as cographic matroids and is a proper subclass of the class of regular matroids. We give a structural characterization of the class of delta-graphic matroids.
Lee, Duksang, Oum, Sang-il
openaire   +2 more sources

Generalized permutohedra, h-vectors of cotransversal matroids and pure O-sequences (extended abstract) [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2011
Stanley has conjectured that the h-vector of a matroid complex is a pure O-sequence. We will prove this for cotransversal matroids by using generalized permutohedra. We construct a bijection between lattice points inside a $r$-dimensional convex polytope
Suho Oh
doaj   +1 more source

Bases of G-V Intuitionistic Fuzzy Matroids

open access: yesMathematics, 2020
The purpose of this paper is to study intuitionistic fuzzy bases (IFBs) and the intuitive structure of a G−VIFM. Firstly, the intuitionistic fuzzy basis (IFB) of a G−VIFM is defined; then the h-range and properties of an IFB are presented and a necessary
Yonghong Li   +4 more
doaj   +1 more source

Matroid intersection, base packing and base covering for infinite matroids [PDF]

open access: yesCombinatorica, 2014
As part of the recent developments in infinite matroid theory, there have been a number of conjectures about how standard theorems of finite matroid theory might extend to the infinite setting. These include base packing, base covering, and matroid intersection and union.
Bowler, Nathan, Carmesin, Johannes
openaire   +2 more sources

Connections between Linear Complementary Dual Codes, Permanents and Geometry

open access: yesMathematics, 2023
Linear codes with complementary duals, or LCD codes, have recently been applied to side-channel and fault injection attack-resistant cryptographic countermeasures.
Adel N. Alahmadi   +5 more
doaj   +1 more source

On triangular matroids induced by n3-configurations

open access: yesOpen Mathematics, 2020
A triangular matroid is a rank-3 matroid whose ground set consists of the points of an n3{n}_{3}-configuration and whose bases are the point triples corresponding to non-triangles within the configuration.
Alazemi Abdullah, Raney Michael
doaj   +1 more source

Phase Transition as an Emergent Phenomenon Analysed by Violation of Structural Invariant (M, BM)

open access: yesMendel, 2020
When modeling complex systems, we usually encounter the following difficulties: partiality, large amounts of data and uncertainty of conclusions. The most common approach used for modeling is the physical approach, sometimes reinforced by statistical ...
Jiri Bila, Ali H Reshak, Jan Chysky
doaj   +1 more source

Modeling Complex Systems by Structural Invariants Approach

open access: yesComplexity, 2021
When modeling complex systems, we usually encounter the following difficulties: partiality, large amount of data, and uncertainty of conclusions. It can be said that none of the known approaches solves these difficulties perfectly, especially in cases ...
Jiri Bila, Ali. H. Reshak, Jan Chysky
doaj   +1 more source

Algebraic matroids and Frobenius flocks [PDF]

open access: yes, 2017
We show that each algebraic representation of a matroid $M$ in positive characteristic determines a matroid valuation of $M$, which we have named the {\em Lindstr\"om valuation}.
Bollen, Guus   +2 more
core   +9 more sources

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