Diophantine analysis

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. A collection of methods for determining integral solutions of certain algebraic equations.

GNU Webster's 1913

1. adj. (Alg.) that branch of indeterminate analysis which has for its object the discovery of rational values that satisfy given equations containing squares or cubes; as, for example, to find values of x and y which make x2 + y2 an exact square.