Matroids with different configurations and the same $\mathcal{G}$-invariant
Combinatorics
2024-08-07 v2
Abstract
From the configuration of a matroid (which records the size and rank of the cyclic flats and the containments among them, but not the sets), one can compute several much-studied matroid invariants, including the Tutte polynomial and a newer, stronger invariant, the -invariant. To gauge how much additional information the configuration contains compared to these invariants, it is of interest to have methods for constructing matroids with different configurations but the same -invariant. We offer several such constructions along with tools for developing more.
Cite
@article{arxiv.2108.05482,
title = {Matroids with different configurations and the same $\mathcal{G}$-invariant},
author = {Joseph E. Bonin},
journal= {arXiv preprint arXiv:2108.05482},
year = {2024}
}
Comments
15 pages, 3 figures