rcasero on Tue, 17 Dec 2002 23:10:42 +0100 |
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don't understand inverseimage |
Hi everybody. I'm new to pari, and I cannot understad the description of the [mat]inverseimage(x, y) function. I suppose it's quite clear for everybody else, but maybe it's that I'm also quite new to number theory. I've searched for more information with Google, but I couldn't find anything beside that. I've been doing some tests with pg and octave, and it seems that if x = A, y = y, it does something similar to z = A^(-1) * y But then , why z `belongs to the inverse image of y' and not `z is the inverse image of y'? Regards, Ramón. -- ---------------------------------------------------- Ramón Casero Cañas rcasero@tsc.uc3m.es Ing. de Telecomunicación. Universidad Carlos III de Madrid ----------------------------------------------------