Real Non-Abelian Mixed Hodge Structures for Quasi-Projective Varieties: Formality and Splitting

Real Non-Abelian Mixed Hodge Structures for Quasi-Projective Varieties: Formality and Splitting
ISBN-10
1470419815
ISBN-13
9781470419813
Category
Hodge theory
Pages
178
Language
English
Published
2016-09-06
Publisher
American Mathematical Soc.
Author
J. P. Pridham

Description

The author defines and constructs mixed Hodge structures on real schematic homotopy types of complex quasi-projective varieties, giving mixed Hodge structures on their homotopy groups and pro-algebraic fundamental groups. The author also shows that these split on tensoring with the ring R[x] equipped with the Hodge filtration given by powers of (x−i), giving new results even for simply connected varieties. The mixed Hodge structures can thus be recovered from the Gysin spectral sequence of cohomology groups of local systems, together with the monodromy action at the Archimedean place. As the basepoint varies, these structures all become real variations of mixed Hodge structure.

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