Matroids over hyperfields
Matroids over hyperfields
复制标题
超域上的拟阵
DOI:
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发表时间:
2016
期刊:
影响因子:
--
通讯作者:
N. Bowler
中科院分区:
文献类型:
--
作者:
M. Baker;N. Bowler
We present an algebraic framework which simultaneously generalizes the notion of linear subspaces, matroids, valuated matroids, and oriented matroids. We call the resulting objects matroids over hyperfields. In fact, there are (at least) two natural notions of matroid in this context, which we call weak and strong matroids. We give "cryptomorphic" axiom systems for such matroids in terms of circuits, Grassmann-Plucker functions, and dual pairs, and establish some basic duality theorems. We also show that if F is a doubly distributive hyperfield then the notions of weak and strong matroid over F coincide.
影响因子:
0.6
作者:
Giansiracusa J
通讯作者:
Giansiracusa J