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arXiv · 1502.01806

A Method to construct the Sparse-paving Matroids over a Finite Set

B. Mederos·M. Takane·G. Tapia-Sanchez·B. Zavala
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Abstract

In this work we present an algorithm to construct sparse-paving matroids over finite set $S$. From this algorithm we derive some useful bounds on the cardinality of the set of circuits of any Sparse-Paving matroids which allow us to prove in a simple way an asymptotic relation between the class of Sparse-paving matroids and the whole class of matroids. Additionally we introduce a matrix based method which render an explicit partition of the $r$-subsets of $S$, $\binom{S}{r}=\sqcup_{i=1}^{\gamma }\mathcal{U}_{i}$ such that each $\mathcal{U}_{i}$ defines a sparse-paving matroid of rank $r$.

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B. Mederos, M. Takane, G. Tapia-Sanchez, B. Zavala. 2015-02-06. A Method to construct the Sparse-paving Matroids over a Finite Set. https://arxiv.org/abs/1502.01806

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