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- W2951184817 abstract "Numerical data structures for positive dimensional solution sets of polynomial systems are sets of generic points cut out by random planes of complimentary dimension. We may represent the linear spaces defined by those planes either by explicit linear equations or in parametric form. These descriptions are respectively called extrinsic and intrinsic representations. While intrinsic representations lower the cost of the linear algebra operations, we observe worse condition numbers. In this paper we describe the local adaptation of intrinsic coordinates to improve the numerical conditioning of sampling algebraic sets. Local intrinsic coordinates also lead to a better stepsize control. We illustrate our results with Maple experiments and computations with PHCpack on some benchmark polynomial systems." @default.
- W2951184817 created "2019-06-27" @default.
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- W2951184817 date "2009-12-14" @default.
- W2951184817 modified "2023-09-27" @default.
- W2951184817 title "Sampling algebraic sets in local intrinsic coordinates" @default.
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