The morphic conjecture for even and odd morphic cohomology

Let XX be a smooth projective variety of dimension mm, let F{\mathbb F} be the coefficient field used in the source, and let L~tHk(X;F)\widetilde{L}^tH^k(X;{\mathbb F}) be the image of morphic cohomology in singular cohomology. Define

EHa(X;F)=L~aH0(X;F)L~a+1H2(X;F)L~a+mH2m(X;F),EH^a(X;{\mathbb F})=\widetilde{L}^aH^0(X;{\mathbb F})\oplus\widetilde{L}^{a+1}H^2(X;{\mathbb F})\oplus\cdots\oplus\widetilde{L}^{a+m}H^{2m}(X;{\mathbb F}), OHb(X;F)=L~bH1(X;F)L~b+1H3(X;F)L~b+m1H2m1(X;F),OH^b(X;{\mathbb F})=\widetilde{L}^bH^1(X;{\mathbb F})\oplus\widetilde{L}^{b+1}H^3(X;{\mathbb F})\oplus\cdots\oplus\widetilde{L}^{b+m-1}H^{2m-1}(X;{\mathbb F}), LHa,b(X;F)=EHa(X;F)OHb(X;F).LH^{a,b}(X;{\mathbb F})=EH^a(X;{\mathbb F})\oplus OH^b(X;{\mathbb F}).

Let L\mathcal L be the restriction of the Lefschetz operator LL to these spaces, and let λ\lambda be its adjoint with respect to the Hodge inner product. Let Λ\Lambda be the adjoint of LL on cohomology. Morphic conjecture. On each of EHa(X;F)EH^a(X;{\mathbb F}), OHb(X;F)OH^b(X;{\mathbb F}), and LHa,b(X;F)LH^{a,b}(X;{\mathbb F}), the operator λ\lambda is the restriction of Λ\Lambda. The source states that these conjectures hold for abelian varieties, complete intersections, and Grassmannians, and proves that Grothendieck standard conjecture B implies them; no general resolution is given.

Sources & referencesView supporting material

Primary source

Jyh-Haur Teh, “Grothendieck standard conjectures, morphic cohomology and Hodge index theorem”, arXiv:math/0512232 (2007).

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