-: X :-

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x*

A letter used to designate any of the following
      The chevn letter for a 6d surtope
      The kaleidoscope letter for the complex group in 3{6}2 not in 3{3}3.

XOR *

[XOR] means eXclusive OR, refers to a computing function that corresponds to Parity. In reality, the exclusive or over three true statements is false, while the XOR would make this true.
      Applied to polytopes, the XOR refers to the alternation of density generated by askew margins. The process generates binary polytopes.
      See also mod2 polytopes

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