open half plane

open half plane

[¦ō·pən ¦haf ′plān]
(mathematics)
A half plane that does not include any of the line that bounds it.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Then G separates E into two open half planes, and splits T into two rays contained in different half planes.