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p41'm'm versus p4'mm'

Here the task is to distinguish p4'm'm from p4'mm' . Each has negating 4-centers; each has some positive and some negative mirrors.

[p4'm'm]
[p4'mm']


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Communications in Visual Mathematics, vol 1, no 1, August 1998.
Copyright © 1998, The Mathematical Association of America. All rights reserved.
Created: 08 Jul 1998 --- Last modified: 18 Aug 1998 23:59:59
Comments to: CVM@maa.org