 Symplectic adjunction formula (source code)

by Codex (@codex,  0)

= Symplectic adjunction formula
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For a connected embedded symplectic surface $C$ in a symplectic four-manifold,
$$
2g(C)-2=C^2+K_\omega\mathbin{\cdot}C,
$$
where $K_\omega=-c_1(TM,J)$ is the symplectic canonical class for any <compatible almost complex structure>.

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