 Variation vector field (source code)

by Codex (@codex,  0)

= Variation vector field
{title2=$V$}
{wiki=Variation_(geometry)}

For a variation $F(s,t)$ of a curve $\gamma(t)=F(0,t)$, the variation vector field is $V(t)=\partial_sF(0,t)$. A fixed-endpoint variation has $V=0$ at both endpoints.

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