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Results tagged with computer-algebra
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user 46140
Using computer-aid approach to solve algebraic problems. Questions with this tag should typically include at least one other tag indicating what sort of algebraic problem is involved, such as ac.commutative-algebra or rt.representation-theory or ag.algebraic-geometry.
4
votes
Computation of a minimal polynomial
Although exact calculations are to be preferred where possible, if all you have is a high-accuracy numeric value of a number which you know to be algebraic then you can use an integer relation finding …
- 7,226
25
votes
Accepted
How can you find an integer coefficient polynomial knowing its values only at a few points (...
You can certainly do better than brute force by considering modular constraints. If the solution is $p(x) = \sum_i a_i x^i$ then $p(x) - \sum_{j=0}^{n-1} a_j x^j$ is divisible by $x^n$ and $$\frac{p(x …
- 7,226