Hi, There are two emails below that are responses to the email about Lie Groups that shouldn't have been posted on sage-edu... The responses probably never made it back to the original poster, so I'm posting them here.
William ---------- Forwarded message ---------- From: sage-combinat-devel group <[EMAIL PROTECTED]> Date: Nov 12, 2008 3:18 AM Subject: 2 new messages in 1 topic - digest To: sage-combinat-devel digest subscribers <[EMAIL PROTECTED]> sage-combinat-devel http://groups.google.com/group/sage-combinat-devel?hl=en [EMAIL PROTECTED] Today's topics: * Fwd: [sage-edu] Question on Lie Groups/Algebras - 2 messages, 2 authors http://groups.google.com/group/sage-combinat-devel/browse_thread/thread/2d660d4d6bc3a581?hl=en ============================================================================== TOPIC: Fwd: [sage-edu] Question on Lie Groups/Algebras http://groups.google.com/group/sage-combinat-devel/browse_thread/thread/2d660d4d6bc3a581?hl=en ============================================================================== == 1 of 2 == Date: Mon, Nov 10 2008 10:24 pm From: mabshoff On Nov 10, 10:01 pm, "William Stein" <[EMAIL PROTECTED]> wrote: > Dan Bump, > > This message (to sage-edu!?) looks like it might be more appropriate > at sage-combinat or to Dan Bump. Is this the sort of thing that > Sage can do natively now without using lie? For the record: Sage does have a working lie interface and we do have an optional lie.spkg. IIRC it was Mike's work. While testing doctests with optional tests enabled the doctests besides a trivial issue (introspection does not doctest correctly due to additional commands) pass, so I guess this is good news. Cheers, Michael == 2 of 2 == Date: Tues, Nov 11 2008 5:08 pm From: Daniel Bump There is functionality for some Lie theoretic computations in Sage. There are facilities for working with roots and weights, action of Weyl group on weight lattice, decompose tensor products of irreducible representations into irreducibles, and branching rules. There is also a program called LiE that is not built-in with Sage but which you can interface to. That program is no longer maintained but is fairly powerful. > What I want to do is very simple. > > 1. Generate a Special Orthogonal Group - SO(4) > 2. List Basis vectors > 3. Generate Lie Algebra > 4. Generate Representation > 5. Solve the secular equation > > using Sage's lie package. Not having much luck with documentation. > Appreciate any clear directions. Despite this description, I'm not exactly sure what you want to do. For example, when you say list basis vectors, basis vector of what - the Lie algebra or some particular module? If you could you give a sample computation then maybe we can give you an opinion as to if it can be done in Sage 3.1.4. Daniel Bump ============================================================================== You received this message because you are subscribed to the Google Groups "sage-combinat-devel" group. To post to this group, send email to [EMAIL PROTECTED] or visit http://groups.google.com/group/sage-combinat-devel?hl=en To unsubscribe from this group, send email to [EMAIL PROTECTED] To change the way you get mail from this group, visit: http://groups.google.com/group/sage-combinat-devel/subscribe?hl=en To report abuse, send email explaining the problem to [EMAIL PROTECTED] ============================================================================== Google Groups: http://groups.google.com/?hl=en -- William Stein Associate Professor of Mathematics University of Washington http://wstein.org --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "sage-edu" group. 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-edu?hl=en -~----------~----~----~----~------~----~------~--~---
