On the rational motivic homotopy category
Abstract
We study the structure of the rational motivic stable homotopy category over general base schemes. Our first class of results concerns the six operations: we prove absolute purity, stability of constructible objects, and Grothendieck-Verdier duality for SHQ. Next, we prove that SHQ is canonically SL-oriented; we compare SHQ with the category of rational Milnor-Witt motives; and we relate the rational bivariant A1-theory to Chow-Witt groups. These results are derived from analogous statements for the minus part of SH[1/2].
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