[see also: delete, drop, omit, dispense with]
This theorem removes the restriction to convex regions which was imposed in Theorem 8.
The theorem implies that some finite subcollection of the $f_i$ can be removed without altering the span.
Let $D$ be the plane with three disjoint discs removed.
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Copyright © 2011 by Jerzy Trzeciak, Warszawa 2011. All rights reserved.
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