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proprism vs duoprism edit
What is the difference between a Proprism and a Duoprism. Do I understand correctly that a Duoprism is the product of exactly two lower dimensional polytopes and a Proprism can be the product of more than two lower dimensional polytopes? Ah, yes, for example a Triaprism is also a Proprism if I am not totally wrong. So the Duoprisms and Triaprisms are the subgroups of Proprisms resulting from the Cartesian product of two and three lower dimensional polytopes respectively. Toshio Yamaguchi (talk) 02:55, 4 December 2010 (UTC)
Yes, you've got it. Proprism is Conway's term, and duoprism, triaprism, etc are from George Olshevsky. They've mainly been studied as uniform polytopes, or two regular polygons specifically, as shown in duoprism. Higher dimensional examples are at Uniform_polyteron#Enumerating_the_convex_uniform_5-polytopes. Tom Ruen (talk) 05:18, 4 December 2010 (UTC)