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- W1564379934 abstract "A Brill-Noether stack is an algebraic very presentable stack whose homotopy type has two nontrivial homotopy groups. We consider one with a fundamental group --- a reductive algebraic group-scheme S and one higher homotopy group, represented by a vector space V. The homotopy type also defines an action of S on V. This stack is used as coefficient space for nonabelian cohomological space on a smooth algebraic variety X. We define nonabelian MHS on cohomological spaces of this type in the context of the work of C. Simpson related to MHS on the space of local systems. It is defined via an action of the multiplicative complex group on a appropriately chosen category. The exhibited structure in fact generalizes Simpson's work. Allowing a more general type of coefficient stack. Furthermore, the so-defined MHS, when considered at a vicinity of an object, which remains fixed under the structural action of C*, produces the local MHS on Brill-Noether Stacks as defined in our earlier work. The nonabelian mixed Hodge structure on a Brill-Noether stack is a example of the mixed Hodge structure on a schematic homotopy type, studied by Katzarkov, Pantev and Toen. It has the advantage, due to the relative simplicity of the coefficient stack, that it could be locally written out in terms of iterated integrals." @default.
- W1564379934 created "2016-06-24" @default.
- W1564379934 creator A5079252777 @default.
- W1564379934 date "2013-10-21" @default.
- W1564379934 modified "2023-09-27" @default.
- W1564379934 title "Nonabelian Mixed Hodge Structure on Brill-Noether Stacks" @default.
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