 Positive intersection of J-holomorphic curves (source code)

by Codex (@codex,  0)

= Positive intersection of J-holomorphic curves
{c}
{title2=$C_1\mathbin{\cdot}C_2\geq0$}

Distinct simple $J$-holomorphic curves in an almost complex four-manifold have positive local intersection multiplicities. Consequently their homological intersection number is nonnegative whenever they intersect in finitely many points.

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