container

The smallest circle containing this point — zero radius for a plain Euclidean point.

con(a) = a ∧ car(a)^☆, always inside-out (cw = +1 — what the algebra gives); container.radius2 == az²·radius2, so an imaginary point gets an imaginary container. At infinity the round weight cw = az² collapses to zero, and no container exists.

Throws