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From the Mayer-Vietoris spectral sequence to \"uberhomology

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arxiv 2304.10134 v2 pith:WSMTRBDR submitted 2023-04-20 math.GT math.ATmath.CO

classification math.GTmath.ATmath.CO
keywords mayer-vietorissequenceinterpretationpagesecondspectraluberhomologyanother
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abstract

We prove that the second page of the Mayer-Vietoris spectral sequence, with respect to anti-star covers, can be identified with another homological invariant of simplicial complexes: the $0$-degree \"uberhomology. Consequently, we obtain a combinatorial interpretation of the second page of the Mayer-Vietoris sequence in this context. This interpretation is then used to extend the computations of bold homology, which categorifies the connected domination polynomial at $-1$.

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