Maslov grading compatibility conjecture for sutured Floer homology

Let (\Sigma,{\text{\boldmath \alpha}},{\text{\boldmath \beta}}) be a sutured Heegaard diagram for {\text{\boldmath \Sigma}}(D\times I,T). Write Tα\mathbb{T}_{\alpha} and Tβ\mathbb{T}_{\beta} for the corresponding intersection tori, and let MSF(x,y){\bf M}_{SF}({\bf x},{\bf y}) denote the relative Maslov grading whenever π2(x,y)\pi_2({\bf x},{\bf y})\neq\emptyset. Maslov grading compatibility conjecture. There is a function

M:TαTβQ{\bf M}:\mathbb{T}_{\alpha}\cap\mathbb{T}_{\beta}\longrightarrow\mathbb{Q}

which satisfies

M(x)M(y)=MSF(x,y){\bf M}({\bf x})-{\bf M}({\bf y})={\bf M}_{SF}({\bf x},{\bf y})

whenever x,yTαTβ{\bf x},{\bf y}\in\mathbb{T}_{\alpha}\cap\mathbb{T}_{\beta} have π2(x,y)\pi_2({\bf x},{\bf y})\neq\emptyset, and such that

Eδ=d=SFH(\boldmathΣ(D×I,T))M=d,E^{\infty}_{\delta=d}=SFH({\text{\boldmath $\Sigma$}}(D\times I,T))_{{\bf M}=d},

where the right-hand side is the subspace of SFH({\text{\boldmath \Sigma}}(D\times I,T)) consisting of homology classes representable as linear combinations of intersection points x{\bf x} with M(x)=d{\bf M}({\bf x})=d. This conjecture proposes that the spectral-sequence grading induced by the colored Jones complex agrees with the absolute Maslov grading on sutured Floer homology, extending the relative grading relation to the EE^{\infty} page.

Sources & referencesView supporting material

Primary source

J. Elisenda Grigsby and Stephan Wehrli, “On the Colored Jones Polynomial, Sutured Floer homology, and Knot Floer homology”, arXiv:0807.1432 (2008).

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