Weak symplectic cobordism conjecture for monopole Floer contact elements

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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 ηi⊂Yi\eta_i\subset Y_i be a 11-cycle dual to ω∣Yi\omega|_{Y_i}, and let nu⊂Wnu\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 Γ−ηi\Gamma_{-\eta_i} for the corresponding local coefficient systems.

Weak symplectic cobordism conjecture. The map

HMˇ(W,sω;Γν):HMˇ(−Y2,sξ2;Γ−η2)raHMˇ(−Y1,sξ1;Γ−η1)\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.

References

Primary source

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

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