Weak symplectic cobordism conjecture for monopole Floer contact elements

Let (W,ω)(W,\omega) be a weakly symplectic cobordism from (Y1,ξ1)(Y_1,\xi_1) to (Y2,ξ2)(Y_2,\xi_2). For i=1,2i=1,2, let ηiYi\eta_i\subset Y_i be a 11-cycle dual to ωYi\omega|_{Y_i}, and let nuWnu\subset W be a 22-cycle with

\partialnu=η1\cupeta2.\partialnu=-\eta_1\cupeta_2.

Write sωs_{\omega} for the canonical spinc^c structure associated to ω\omega, sxiis_{xi_i} for the contact spinc^c structures, and Γnu\Gamma_{nu} and Γηi\Gamma_{-\eta_i} for the corresponding local coefficient systems.

Weak symplectic cobordism conjecture. The map

HMˇ(W,sω;Γν):HMˇ(Y2,sξ2;Γη2)raHMˇ(Y1,sξ1;Γη1)\widecheck{HM}(W,\mathfrak{s_{\omega}};\Gamma_{\nu}):\widecheck{HM}(-Y_2,\mathfrak{s}_{\xi_2};\Gamma_{-\eta_2})ra\widecheck{HM}(-Y_1,\mathfrak{s}_{\xi_1};\Gamma_{-\eta_1})

preserves the contact elements:

HMˇ(W,sω;Γν)(ϕξ2)ϕξ1.\widecheck{HM}(W,\mathfrak{s_{\omega}};\Gamma_{\nu})(\phi_{\xi_2})\doteq\phi_{\xi_1}.

Exact and strong symplectic cobordisms are known to preserve contact elements, while the weakly symplectic case described here is the proposed extension and remains open.

Sources & referencesView supporting material

Primary source

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

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