This is http://trac.sagemath.org/sage_trac/ticket/13662
julian * Frédéric Chapoton <[email protected]> [2013-07-11 02:11:24 -0700]: > Well, the problem comes from > > a.matrix() > > which does not work. This is because it receives an incorrect number of > terms, so it cannot build the matrix. In turn, this is because > the length of (a**i).list() depends on i, which is maybe unexpected. > > I have not tried to look further. > > Frederic > > Le mercredi 10 juillet 2013 23:49:54 UTC+2, Paul Mercat a écrit : > > > > If I define 'a' like this: > > > > R.<x>=PolynomialRing(Qp(2)); > > P=2*x^2+1; > > K.<a>=P.root_field(); > > > > > > why 'a' has no attribute abs ? > > It's not a big problem, because it's easy to compute the absolute value > > from the norm, but it don't work : > > > > a.norm() > > > > gives > > > > TypeError: cannot construct an element of Full MatrixSpace of 2 by 2 dense > > matrices over 2-adic > > > > Field with capped relative precision 20 from [0, 1 + O(2^20), 2^-1 + 1 + 2 > > + 2^2 + 2^3 + 2^4 + 2^5 + > > > > 2^6 + 2^7 + 2^8 + 2^9 + 2^10 + 2^11 + 2^12 + 2^13 + 2^14 + 2^15 + 2^16 + > > 2^17 + 2^18 + O(2^19), 0, > > > > O(2^20)]! > > > > > > Somebody knows why this don't work ? > > > > > > -- > You received this message because you are subscribed to the Google Groups > "sage-devel" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > Visit this group at http://groups.google.com/group/sage-devel. > For more options, visit https://groups.google.com/groups/opt_out. > >
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