Dear Alexei,
"ShA" == Sheplyakov Alexei <varg@theor.jinr.ru> writes: ShA> Well, such a plot (complex-valued function of a complex ShA> variable) would be 4-dimensional. I agree that it is possible ShA> to draw it, but IMHO there is no point in doing such ShA> things.
Some people feel differently, see plots of the gamma functions on http://mathworld.wolfram.com/GammaFunction.html ShA> Could you please mention in the INSTALL file that earlier ShA> versions are known to *not* work? This is not a very accurate statement, it is known to work also with v1.10. We did not check the precise margin between "work" and "not work" to make a statement of this sort. ShA> any funky things with such expressions anyway. I don't know if ShA> GiNaC's approach is useful for something except calculations in ShA> perturbative quantum field theory (and frankly, I don't care ShA> much). Thanks for your opinion, this is indeed essential to clarify from the beginning. Best wishes, Vladimir -- Vladimir V. Kisil email: kisilv@maths.leeds.ac.uk -- www: http://maths.leeds.ac.uk/~kisilv/