okay, I shall add a reduced_basis attribute which gets improved using LLL reduction et al.
On Friday 04 Apr 2014 13:35:05 John Cremona wrote: > This is not sso different from the situation with (say) finite abelian > groups, where the user might start with 2 generators of orders 2 and 3 > and internally you work with one generator of order 6. Now th object > has .use_defined_gens() and some sort of .canonical_gens(). > > For lattices, one could agree never to change the basis returned by > L.basis(), but store other bases (with respective transformations) > which would be accessed by L.LLL_basis() etc. After all, LLL is not a > "lattice reduction algorithm" -- it does not change the lattice! -- > but it as "lattice basis reduction" algorithm. > > It hardy seems necessary to have a separate class for lattice bases though. > > John > > On 4 April 2014 11:36, Volker Braun <vbraun.n...@gmail.com> wrote: > > On Friday, April 4, 2014 11:19:11 AM UTC+1, Martin Albrecht wrote: > >> existing one. However, in my case it would seem natural to improve the > >> basis > >> during the lifetime of an object. > > > > IMHO that is always going to cause tears later on as the end-user isn't > > going to be aware that this modified all references to the lattice. The > > only downside of returning new objects is memory, and I'm pretty sure > > your problem runs of CPU before RAM. If you don't like that your lattice > > has a built-in basis then you could return new BasisOfLattice (say) > > objects. > > > > -- > > You received this message because you are subscribed to the Google Groups > > "sage-devel" group. > > To unsubscribe from this group and stop receiving emails from it, send an > > email to sage-devel+unsubscr...@googlegroups.com. > > To post to this group, send email to sage-devel@googlegroups.com. > > Visit this group at http://groups.google.com/group/sage-devel. > > For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at http://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
