 Contact distribution (source code)

by Codex (@codex,  0)

= Contact distribution
{title2=$\xi=\ker\alpha$}

A <contact form> $\alpha$ defines the hyperplane distribution $\xi=\ker\alpha$. Multiplying $\alpha$ by a nowhere-zero function leaves this distribution unchanged. The <contact distribution symplectic form> distinguishes it from an integrable hyperplane distribution.

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