Freiman cover ideals of unmixed bipartite graphs
Abstract
An equigenerated monomial ideal I in the polynomial ring R=k[z1,…, zn] is a Freiman ideal if μ(I2)=(I)μ(I)-(I) 2 where (I) is the analytic spread of I and μ(I) is the number of minimal generators of I. In this paper we classify all simple connected unmixed bipartite graphs whose cover ideals are Freiman ideals.
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