On Mon, Jan 19, 2009 at 7:40 AM, John H Palmieri <jhpalmier...@gmail.com> wrote: > I have a first draft of a module which implements simplicial > complexes, chain complexes, and their homology.
Cool! Is there anything in CHomP that may be of use to you? http://chomp.rutgers.edu/software/ It's GPL v2, mostly C++. It has programs for: ------------- homchain - computes the homology groups over Z or Zp of a chain complex, as well as the homomorphisms induced in homology by chain maps homcubes - computes the (relative) homology of a set of cubes or a cubical set, as well as the homomorphism induced in homology by an acyclic combinatorial cubical multivalued map homsimpl - computes the homology of a finite abstract simplicial complex or relative homology of a pair of simplicial complexes indxpair - finds an index pair with Andrzej Szymczak's algorithm homcub2l - computes the index map using double-layer cubical sets to overcome the problem with excision, as introduced in a paper by P. Pilarczyk and K. Stolot chmap - constructs a chain selector of an almost perfect combinatorial cubical multivalued map; this program was written by Marcin Mazur and Jacek Szybowski (note: it does not support the common command-line arguments listed above) chom - computes homology of a cubical sets using a geometric reduction approach; this program was written by Bill Kalies (note: it does not support the common command-line arguments listed above) chomp - computes homology of cubical sets using one of the bitmap-based homology computation algorithms developped recently by Marian Mrozek; the program is capable of reading data in a variety of input formats, and it allows to use multiple homology computation engines, including the ones implemented in homcubes and chom ------------- Hope this helps. -- Carlo Hamalainen http://carlo-hamalainen.net --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to sage-devel@googlegroups.com To unsubscribe from this group, send email to sage-devel-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URLs: http://www.sagemath.org -~----------~----~----~----~------~----~------~--~---
