CoCoA » CoCoA-5

16 Sep 2013

11:08 Design #403: Misuse of dot-dot operator

Is the indet version of operator @..@ ever used outside a call to @elim@?
John Abbott

11:06 Design #403: Misuse of dot-dot operator

In CoCoA-4 the range of indets produced was simply from the @i@-th to the @j@-th where @i@ is the index of the first ... John Abbott

10:58 Design #403: Misuse of dot-dot operator

Making operator @..@ work "as expected" for indeterminates is not entirely simple.
Consider the expression @x[1]..... John Abbott

10:46 Design #403 (Rejected): Misuse of dot-dot operator

Giulia Bianco produced an *interesting misuse* of the @..@ operator, namely @v[1]..v[r]@ thinking (not unreasonably) ... John Abbott

12 Sep 2013

16:38 Feature #273 (Closed): Package for Polynomial Algebra Homomorphisms

Giulia has implemented @Gens_Ker_Hom_Mod@, @Pres_Im_Hom_Mod@, @Pres_Ker_Hom_Mod@.
She encountered a few problems i... John Abbott