Steinitz theorem

Steinitz theorem

[′shtī‚nits ‚thir·əm]
(mathematics)
The theorem that an interior point of the convex span of a set in n-dimensional Euclidean space is also an interior point of the convex span of a subset of that set which has at most two n points.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.