There's a lot of literature about logic out there that no one who's designed a CAS has read. A good CAS would take no more work to make than the contemporary CAS's, which as a class are the worst made software I've ever used extensively in my fifty years. Euclid wrote a crystal clear manual 2,500 years ago, but you clowns couldn't manage it.
On Sun, Aug 23, 2020 at 7:49 PM [email protected] < [email protected]> wrote: > This again: > > sympy.summation(sympy.S('z^k / k'), sympy.S('(k, 1, oo)')) > Piecewise((-log(1 - z), (z >= -1) & (z < 1)), (Sum(z**k/k, (k, 1, oo)), > True)) > > I don't know what ">=" and mean "<", since Sympy (a program about math) > was documented by a non-mathematician who neglected to define his > mathematical terms; but it looks a lot like Sympy is singling out a segment > of the real line instead of a disk in the complex plane. This program was > designed from the ground up by amateurs not up to the task. > > -- > You received this message because you are subscribed to a topic in the > Google Groups "sympy" group. > To unsubscribe from this topic, visit > https://groups.google.com/d/topic/sympy/28qmAIL3Xro/unsubscribe. > To unsubscribe from this group and all its topics, send an email to > [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/sympy/e5896cd0-adf1-4447-94df-0c75b63c209an%40googlegroups.com > <https://groups.google.com/d/msgid/sympy/e5896cd0-adf1-4447-94df-0c75b63c209an%40googlegroups.com?utm_medium=email&utm_source=footer> > . > -- You received this message because you are subscribed to the Google Groups "sympy" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/sympy/CABc8mQWU2mkO2wOe_vHDdUJ8jP2ZJ7s_Rg1fY5cVyXBV-VmUgA%40mail.gmail.com.
