Begin forwarded message: > From: "Eric Dietz" <[EMAIL PROTECTED]> > Date: August 25, 2007 2:07:56 AM PDT > To: "Robert Bradshaw" <[EMAIL PROTECTED]> > Subject: Re: Your Rubik's solver in SAGE > > Robert: > > Yeah, you have my permission to release it under GPL with SAGE. > Sounds pretty interesting. As for the modeling, I model the cube as > a 5x5x5 array of integers, using the "surface" of the array to > store the individual colors. > If you want a much more mathematically sound rubik's cube solver, > I'd recommend looking at Herbert Kociemba's "Cube Explorer" (google > should know where to find it). His method basically generates > databases of how to move positions from one set (a cube that can be > solved with all 12 unique quarterturns) to a subset (a cube that > can be solved with half-turns), to a solved state. There is a lot > of group theory in his version, and the cube is modelled differently. > > Anyhoo, I'll be happy to answer any questions you may have about > the source code, and yeah, you're free to use it in any capacity > you wish (with attribution where relevant)... > > Peace > - Eric > > > > On Fri, 24 Aug 2007 17:37:34 -0500, Robert Bradshaw > <[EMAIL PROTECTED]> wrote: > >> Hi, >> >> I am one of the authors of SAGE, an open source package of >> mathematics software. See http://sagemath.org . Currently SAGE has >> tools for modeling the Rubik's cube as a permutation group in GAP, >> but solving it as a generic word problem is horribly inefficient. >> Your program does this, and in a very nice, efficient, and easy-to- >> interface-with way. I am writing to you to ask you how you would >> feel about having this program (the command line version) bundled >> with SAGE (GPL, with attribution of course). >> >> Thanks, >> Robert >> >
--~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to [email protected] To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-devel URLs: http://sage.scipy.org/sage/ and http://modular.math.washington.edu/sage/ -~----------~----~----~----~------~----~------~--~---
