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Somayeh Moradi

Academic rank: Associate Professor
ORCID:
Education: PhD.
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HIndex:
Faculty: Basic Science
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Research

Title
Poincar\`{e} series of some hypergraph algebras
Type
JournalPaper
Keywords
Poincare, hypergraph
Year
2013
Journal MATHEMATICA SCANDINAVICA
DOI
Researchers Eric Emtander ، Ralf Froberg ، Fatemeh Mohammadi ، Somayeh Moradi

Abstract

A hypergraph H = (V ,E), where V = {x1, . . . , xn} and E ⊆ 2V defines a hypergraph algebra RH = k[x1, . . . , xn]/(xi1 · · · xik ; {i1, . . . , ik} ∈ E). All our hypergraphs are d-uniform, i.e., |ei| = d for all ei ∈ E.We determine the Poincaré series for some hypergraphs generalizing lines, cycles, and stars.We finish by calculating the graded Betti numbers and the Poincaré series of the graph algebra of the wheel graph.