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Antonio Jimenez Pastor [Wed, 18 Apr 2018 10:44:38 +0000 (12:44 +0200)]
Added an heuristic zero testing for Lazy Elements.
Now, before going to the real value, it checks that the initial value of
the lazy element at zero is zero. Otherwise, the method is_zero
of the class _LazyElement returns directly False
Antonio Jimenez Pastor [Fri, 9 Mar 2018 14:03:55 +0000 (15:03 +0100)]
New version of the packages.
Now the class DDRing accepts algebraic extensions of QQ as
basic field. Also, this field is dinamicall computed assuming
that, if the base ring is a Polynomial Ring, the base field
is the same as the coefficients of the polynomials.
Antonio Jimenez Pastor [Thu, 8 Mar 2018 13:43:58 +0000 (14:43 +0100)]
some version
Antonio Jimenez Pastor [Thu, 8 Mar 2018 10:39:24 +0000 (11:39 +0100)]
Setting up the public repository for the SAGE implementation Differentially Definable Functions.