volume 17, issue 5, P943-958 2010
DOI: 10.4310/mrl.2010.v17.n5.a11
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Abstract: We study the linear space generated by the multigraded Betti diagrams of Z^n-graded artinian modules of codimension n whose resolutions become pure of a given type when taking total degrees. We show that the multigraded Betti diagram of the equivariant resolution constructed by D.Eisenbud, J.Weyman, and the author, and all its twists, form a basis for this linear space.Comment: 15 pages, some modifications and added materia

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