Efficient path tracking methods

Path tracking is the fundamental computational tool in homotopy continuation and is therefore key in most algorithms in the emerging field of numerical algebraic geometry. Though the basic notions of predictor-corrector methods have been known for years, there is still much to be considered, particu...

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Published inNumerical algorithms Vol. 58; no. 4; pp. 451 - 459
Main Authors Bates, Daniel J., Hauenstein, Jonathan D., Sommese, Andrew J.
Format Journal Article
LanguageEnglish
Published Boston Springer US 01.12.2011
Springer Nature B.V
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ISSN1017-1398
1572-9265
DOI10.1007/s11075-011-9463-8

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Summary:Path tracking is the fundamental computational tool in homotopy continuation and is therefore key in most algorithms in the emerging field of numerical algebraic geometry. Though the basic notions of predictor-corrector methods have been known for years, there is still much to be considered, particularly in the specialized algebraic setting of solving polynomial systems. In this article, the effects of the choice of predictor method on the performance of a tracker is analyzed, and details for using Runge-Kutta methods in conjunction with adaptive precision are provided. These methods have been implemented in the Bertini software package, and several examples are described.
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ISSN:1017-1398
1572-9265
DOI:10.1007/s11075-011-9463-8