SubresultantPolynomials

SubresultantPolynomials[poly1,poly2,var]

generates a list of subresultant polynomials of the polynomials poly1 and poly2 with respect to the variable var.

SubresultantPolynomials[poly1,poly2,var,Modulusp]

computes the subresultant polynomials modulo the prime p.

Details and Options

Examples

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Basic Examples  (2)

This gives the list of subresultant polynomials of two univariate polynomials:

The list of subresultant polynomials of polynomials with symbolic coefficients:

The first element is equal to Resultant of the input polynomials:

Scope  (2)

Polynomials with integer coefficients:

Polynomials with symbolic coefficients:

Options  (3)

Modulus  (3)

By default, the subresultant polynomials are computed over the rational numbers:

Compute the subresultant polynomials of the same polynomials over the integers modulo 2:

Compute the subresultant polynomials of the same polynomials over the integers modulo 5:

Properties & Relations  (2)

The degree of the ^(th) subresultant polynomial is at most :

The coefficient of the ^(th) subresultant polynomial at is the ^(th) principal subresultant coefficient:

Subresultants computes the principal subresultant coefficients:

Coefficients of the subresultant polynomials are polynomials in the coefficients of the input:

Possible Issues  (1)

SubresultantPolynomials requires exact coefficients:

Wolfram Research (2012), SubresultantPolynomials, Wolfram Language function, https://reference.wolfram.com/language/ref/SubresultantPolynomials.html.

Text

Wolfram Research (2012), SubresultantPolynomials, Wolfram Language function, https://reference.wolfram.com/language/ref/SubresultantPolynomials.html.

CMS

Wolfram Language. 2012. "SubresultantPolynomials." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/SubresultantPolynomials.html.

APA

Wolfram Language. (2012). SubresultantPolynomials. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/SubresultantPolynomials.html

BibTeX

@misc{reference.wolfram_2025_subresultantpolynomials, author="Wolfram Research", title="{SubresultantPolynomials}", year="2012", howpublished="\url{https://reference.wolfram.com/language/ref/SubresultantPolynomials.html}", note=[Accessed: 21-February-2025 ]}

BibLaTeX

@online{reference.wolfram_2025_subresultantpolynomials, organization={Wolfram Research}, title={SubresultantPolynomials}, year={2012}, url={https://reference.wolfram.com/language/ref/SubresultantPolynomials.html}, note=[Accessed: 21-February-2025 ]}