The pseudo-tangent cone of a subset at a point is the set
where is the contingent cone of and where is the smallest convex set in containing .
The pseudo-tangent cone of a subset at a point is the set
where is the contingent cone of and where is the smallest convex set in containing .
This entry contributed by Christopher Stover
Stover, Christopher. "Pseudo-Tangent Cone." From MathWorld--A Wolfram Web Resource, created by Eric W. Weisstein. https://mathworld.wolfram.com/Pseudo-TangentCone.html