Stable cohomology of spaces via symmetric (semi)simplicial filtration

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Oishee Banerjee, IAS

We construct a spectral sequence quite like ˇCech-to-derived category spectral sequence for hypercoverings on \Delta S,asmallcategoryconstructedfrom,andslightlylargerthan,\Delta.Ineffectthisgivesaunifiedproofofoldresultsandnewe.g.Casmoothprojectivecurveofgenusg,ofunorderedconfigurationspaces,ofthemodulispaceofsmoothsectionsofafixed\mathfrak{g}^r_dthatismveryampleforsomem$, some geoemetric Batyrev--Manin type conjectures over global function fields for weighted projective stacks, complete simplicial toric varieties etc. In the special case when we have a monoid over a graded commutative ring our spectral sequence corresponds to that of the derived indecomposables (in the sense of Galatius--Kupers--Randal—Williams) giving an alternative topological interpretation of the moduli spaces above.