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The Diamond Operator for Real Algebraic Numbers

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http://pubman.mpdl.mpg.de/cone/persons/resource/persons45404

Schmitt,  Susanne
Algorithms and Complexity, MPI for Informatics, Max Planck Society;

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Schmitt, S.(2003). The Diamond Operator for Real Algebraic Numbers (ECG-TR-243107-01). Sophia Antipolis, FRANCE: Effective Computational Geometry for Curves and Surfaces.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0019-EBB1-B
Abstract
Real algebraic numbers are real roots of polynomials with integral coefficients. They can be represented as expressions whose leaves are integers and whose internal nodes are additions, subtractions, multiplications, divisions, k-th root operations for integral k, or taking roots of polynomials whose coefficients are given by the value of subexpressions. This last operator is called the diamond operator. I explain the implementation of the diamond operator in a LEDA extension package.