Picard's little theorem

Picard's little theorem

[pi′kärz ′lid·əl ¦thir·əm]
(mathematics)
A nonconstant entire function of the complex plane assumes every value save at most one. Also known as Picard's first theorem.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.