Matrix factorizations and motivic measures

Valery A. Lunts; Olaf M. Schnürer

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arXiv · 1310.7640

Matrix factorizations and motivic measures

Valery A. Lunts·Olaf M. Schnürer

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Abstract

This article is the continuation of [LS12]. We use categories of matrix factorizations to define a morphism of rings (= a Landau-Ginzburg motivic measure) from the (motivic) Grothendieck ring of varieties over $\mathbb{A}^1$ to the Grothendieck ring of saturated dg categories (with relations coming from semi-orthogonal decompositions into admissible subcategories). Our Landau-Ginzburg motivic measure is the analog for matrix factorizations of the motivic measure in [BLL04] whose definition involved bounded derived categories of coherent sheaves. On the way we prove smoothness and a Thom-Sebastiani theorem for enhancements of categories of matrix factorizations.

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BibTeX RIS

Valery A. Lunts, Olaf M. Schnürer. 2015-06-01. Matrix factorizations and motivic measures. https://arxiv.org/abs/1310.7640

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