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In the complex setting, let $F(x,y,y')=0$ be an analytic or algebraicdifferential equation with $y'$-degree $d$. We deal with the qualitative studyof such equations through the geometry of the planar $d$-web generated by thegeneric family of integral curves. Infinitesimal symmetries of theseconfigurations are discussed by using meromorphic connections methods "\`a laCartan-Spencer".

Infinitesimal symmetries for implicit planar webs