NUMERICAL ALGORITHMS FOR DUAL BASES OF POSITIVE-DIMENSIONAL IDEALS
2013 ◽
Vol 12
(06)
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pp. 1350018
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An ideal of a local polynomial ring can be described by calculating a standard basis with respect to a local monomial ordering. However the usual standard basis algorithms are not numerically stable. A numerically stable approach to describing the ideal is by finding the space of dual functionals that annihilate it, which reduces the problem to one of linear algebra. There are several known algorithms for finding the truncated dual up to any specified degree, which is useful for describing zero-dimensional ideals. We present a stopping criterion for positive-dimensional cases based on homogenization that guarantees all generators of the initial monomial ideal are found. This has applications for calculating Hilbert functions.
2019 ◽
Vol 19
(10)
◽
pp. 2050201
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2011 ◽
Vol 48
(2)
◽
pp. 220-226
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2019 ◽
Vol 18
(03)
◽
pp. 1950041
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