CoCoA » CoCoA-5

20 Jan 2015

20:32 Feature #657: use command, ring syntax, RingOf

I did indeed try to execute that command (without really thinking). It would have been handy if it had worked, but i... John Abbott

20:30 Feature #657 (New): use command, ring syntax, RingOf

Is it desirable to be able to issue a command such as this?
@use RingOf(M);@
Note that this has potential implica... John Abbott

20:25 Design #656: eval: in which ring should the result be?

We could make obsolescent the version which wants coords in the poly ring -- so it still works but produces a warning... John Abbott

20:24 Design #656: eval: in which ring should the result be?

Currently @eval@ is written in CoCoA-5, and just checks args before calling @subst@.
I find the version which retu... John Abbott

20:19 Design #656 (New): eval: in which ring should the result be?

Currently @eval(f,[xval,yval])@ wants @xval@ and @yval@ to be in the same ring as @f@; and the result is then natural... John Abbott

17:12 Slug #655: MakeSet can be very slow

I tried to run @MakeSet@ on a list of about 7000 matrices (2x2), most of which were different. I stopped CoCoA after... John Abbott

17:10 Slug #655 (New): MakeSet can be very slow

@MakeSet@ can be very slow on long lists where most of the elements are distinct.
Find a way to make it faster. John Abbott

17:08 Support #654: Rename adjoint to adjugate???

I suppose @adjoint@ should become obsolescent.
Possible new names as @ClassicalAdjoint@ or @adjugate@; I suppose the... John Abbott

17:06 Support #654: Rename adjoint to adjugate???

I had a quick search on internet, and found a discussion (in Google groups, I think) by the Sage developers on exactl... John Abbott

17:02 Support #654 (Closed): Rename adjoint to adjugate???

I have just looked up *adjoint* in Wikipedia. There it says that _adjoint_ is increasingly being used to mean the tr... John Abbott