RegularChains[FastArithmeticTools][ResultantBySpecializationCube] - compute the resultant of two polynomials
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Calling Sequence
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ResultantBySpecializationCube(f1, f2, v, SCube, R)
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Parameters
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R
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polynomial ring
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f1
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polynomial of R
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f2
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polynomial of R
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v
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variable of R
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SCube
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subresultant chain specialization cube
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Description
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The call ResultantBySpecializationCube(f1, f2, v, SCube, R) returns the resultant of f1 and f2 w.r.t. v. It is computed by interpolating the data in SCube. See the command SubresultantChainSpecializationCube to learn how to build this data-structure.
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f1 and f2 must have main variable v and must hold.
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Examples
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Define a ring of polynomials.
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Define two polynomials of R.
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Compute images of the subresultant chain of sufficiently many points in order to interpolate. Multi-dimensional TFT is used to evaluate and interpolate since 1 is passed as fifth argument
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Interpolate the resultant from the SCube
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Define a regular chain with r2. Note that r2 is not required to be squarefree.
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Compute a regular GCD of f1 and f2 modulo rc
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