Freiman Cover Ideals of Unmixed Bipartite Graphs
نویسندگان
چکیده
An equigenerated monomial ideal $$I$$ in the polynomial ring $$R=k[z_1,\ldots, z_n]$$ is a Freiman if $$\mu(I^2)=\ell(I)\mu(I)-{\ell(I)\choose 2}$$ , where $$\ell(I)$$ analytic spread of and $$\mu(I)$$ number minimal generators . In this paper we classify all simple connected unmixed bipartite graphs whose cover ideals are ideals.
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ژورنال
عنوان ژورنال: Mathematical Notes
سال: 2021
ISSN: ['1573-8876', '0001-4346', '1067-9073']
DOI: https://doi.org/10.1134/s0001434621090121