On matrices with the Edmonds–Johnson property arising from bidirected graphs
نویسندگان
چکیده
منابع مشابه
On matrices with the Edmonds-Johnson property arising from bidirected graphs
In this paper we study totally half-modular matrices obtained from {0,±1}-matrices with at most two nonzero entries per column by multiplying by 2 some of the columns. We give an excluded-minor characterization of the matrices in this class having strong Chvàtal rank 1. Our result is a special case of a conjecture by Gerards and Schrijver [6]. It also extends a well known theorem of Edmonds and...
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ژورنال
عنوان ژورنال: Journal of Combinatorial Theory, Series B
سال: 2018
ISSN: 0095-8956
DOI: 10.1016/j.jctb.2017.09.013