Of the nature of a geometrical problem (cf. problem, n. 4). Obsolete.

Mathematics. Designating a problem which has an infinite number of solutions. Occasionally also: infinite. Obsolete.

Relating to a porism, porismatic; having the property of rendering a determinate problem indeterminate.

Relating to or of the nature of a porism.

as in cyclotomic functions.

Mathematics. Of a problem or a problem-solving algorithm: having high computational complexity (complexity, n. additions c). Hence of a system…