Lorenz Minder on Tue, 19 Jan 2010 07:49:22 +0100


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poldisc() problem 

Hi,

I'm having trouble with poldisc() in pari-svn. It works fine for me
with pari-2.3.4:

? f = x^3 + Mod(2, 3)*x^2
%1 = x^3 + Mod(2, 3)*x^2
? poldisc(f)
  ***   at top-level: poldisc(f)
  ***                 ^----------
  *** poldisc: impossible inverse modulo: Mod(0, 3).
  ***   Break loop: type <Return> three times, or Control-d, to go back to GP)
break> 
break> 
break> 

? factor(f)
%2 = 
[Mod(1, 3)*x 2]

[Mod(1, 3)*x + Mod(2, 3) 1]

Best,
--Lorenz
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