Connected excision conjecture for sutured monopole Floer contact elements

Let (M1,γ1)(M_1,\gamma_1) and (M2,γ2)(M_2,\gamma_2) be balanced sutured manifolds equipped with contact structures as in Theorem 1, and let (M,γ)(M,\gamma) be a connected balanced sutured manifold with a diffeomorphism

g:MM1M2g:\partial M\xrightarrow{\cong}\partial M_1\sqcup\partial M_2

that sends γ\gamma to γ1\cupgamma2\gamma_1\cupgamma_2. The corresponding closures are related by a Floer excision cobordism, inducing a map analogous to FF.

Connected excision conjecture. Theorem 1 continues to hold when the disjoint union (M1M2,γ1\cupgamma2)(M_1\sqcup M_2,\gamma_1\cupgamma_2) is replaced by the connected balanced sutured manifold (M,γ)(M,\gamma) described above; in particular, the excision map preserves the associated contact elements up to multiplication by a unit.

The conjecture addresses the connected case not covered by the theorem proved in the paper. Some evidence is suggested by slicing and torus 11-handle operations, which give the relevant cobordism a weak symplectic structure, but the asserted contact-element preservation remains conjectural.

Sources & referencesView supporting material

Primary source

Zhenkun Li, “Contact structures, excisions, and sutured monopole Floer homology”, arXiv:1811.11634 (2019).

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