[sage-devel] Re: Bugs in the element constructors for the SymmetricGroupAlgebra and its group

2014-07-15 Thread Aladin VIRMAUX
EDIT: actually it also works on sage 6.2 except the S.group() On Tuesday, July 15, 2014 6:31:01 PM UTC-7, Aladin VIRMAUX wrote: > > SymmetricGroupAlgebra is full of bugs and maybe a bit old. Use the method > .algebra instead which use the category framework. > In a near future it could be a good

[sage-devel] Re: Bugs in the element constructors for the SymmetricGroupAlgebra and its group

2014-07-15 Thread Aladin VIRMAUX
SymmetricGroupAlgebra is full of bugs and maybe a bit old. Use the method .algebra instead which use the category framework. In a near future it could be a good idea to deprecate it for SymmetricGroup(n).algebra(ring) ? With the patch #1 the following works: sage: p = Permutation((1,2)) sag

[sage-devel] Bugs in the element constructors for the SymmetricGroupAlgebra and its group

2014-07-15 Thread Robert Zeier
Summary: Two bugs in sage 6.2 that are both related to the element constructors for the SymmetricGroupAlgebra [see (1) below] and its group [if one sets display='cycle', see (2) below]. One comment: setting display='list' is not followed in the group case [see (3) below]. Thank you very much!

[sage-devel] Re: Solving rational inequality should give simplified result

2014-07-15 Thread Dima Pasechnik
On 2014-07-15, Dima Pasechnik wrote: > On 2014-07-14, Robert Pollak wrote: >> Am 11.07.2014 18:51, schrieb parisse: >>> sage: %giac >>> >>> --> Switching to Giac <-- >>> >>> giac: solve(abs((x-1)/(x-5)) <= 1/3, x) >>> list[((x>=-1) and (x<=2))] >> >> This looks great, and I could confirm this

[sage-devel] Re: Solving rational inequality should give simplified result

2014-07-15 Thread Dima Pasechnik
On 2014-07-14, Robert Pollak wrote: > Am 11.07.2014 18:51, schrieb parisse: >> sage: %giac >> >> --> Switching to Giac <-- >> >> giac: solve(abs((x-1)/(x-5)) <= 1/3, x) >> list[((x>=-1) and (x<=2))] > > This looks great, and I could confirm this in Giac/Xcas. > > However, there is no Sage inst