Face Numbers of Certain Cohen-Macaulay Flag Complexes
classification
🧮 math.CO
keywords
cohen-macaulaybalancedcertaincomplexcomplexesdimensionalflagclose
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We show that if a $d$-dimensional Cohen-Macaulay complex is, in a certain sense, sufficiently "close" to being balanced, then there is a $d$-dimensional balanced Cohen-Macaulay complex having the same $f$-vector. This in turn provides some partial evidence for a conjecture of Kalai on the $f$-vectors of Cohen-Macaulay flag complexes.
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