Abstract
A new scheme is presented for computing with an algebraic closure of the rational field. It avoids factorization of polynomials over extension fields, but gives the illusion of a genuine field to the user. A technique of modular evaluation into a finite field ensures that a unique genuine field is simulated by the scheme and also provides fast optimizations for some critical operations. Fast modular matrix techniques are also used for several non-trivial operations. The scheme has been successfully implemented within the Magma Computer Algebra System.
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Steel, A. (2002). A New Scheme for Computing with Algebraically Closed Fields. In: Fieker, C., Kohel, D.R. (eds) Algorithmic Number Theory. ANTS 2002. Lecture Notes in Computer Science, vol 2369. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-45455-1_38
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DOI: https://doi.org/10.1007/3-540-45455-1_38
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