[next] [prev] [up] Date: Sat, 06 Dec 80 16:30:00 -0700 (PST)
[next] [prev] [up] From: Bill McKeeman <McKeeman.PA@PARC-MAXC >
[next] [prev] [up] Subject: Re: That 28 move Plummer Cross

OK. There may be non-symmetric local maxima. I feel better; thought maybe I
was just so dense I couldn't grok the obvious.

As for a definition of symmetric: For the purposes of local maximum argument,
each of the 6 basic QTW must have the same effect. That is, the configuration
must be isomorphic under the rotation group of the whole cube (of order 24).


[next] [prev] [up] [top] [help]