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D.8.2.12 triang_solve
Procedure from library solve.lib (see solve_lib).
- Usage:
- triang_solve(l,p [,d] ); l=list, p,d=integers
l is a list of finitely many triangular systems, such that the union of
their varieties equals the variety of the initial ideal.
p>0: gives precision of complex numbers in digits,
d>0: gives precision (1<d<p) for near-zero-determination,
(default: d=1/2*p).
- Assume:
- the ground field has char 0;
l was computed using the algorithm of Lazard or the algorithm of
Moeller (see triang.lib).
- Return:
- ring
R with the same number of variables, but with complex
coefficients (and precision p). R comes with a list
rlist of numbers, in which the complex roots of l are stored.
Example:
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