Closed formula for univariate subresultants in multiple roots
| Autor: | Teresa Krick, Carlos D'Andrea, Agnes Szanto, Marcelo Valdettaro |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Matemáticas
SUBRESULTANTS MathematicsofComputing_NUMERICALANALYSIS 0211 other engineering and technologies 02 engineering and technology EXCHANGE LEMMA Commutative Algebra (math.AC) 01 natural sciences Matemática Pura Combinatorics purl.org/becyt/ford/1 [https] Mathematics - Algebraic Geometry ComputingMethodologies_SYMBOLICANDALGEBRAICMANIPULATION FOS: Mathematics Discrete Mathematics and Combinatorics Computer Science::Symbolic Computation 0101 mathematics SCHUR FUNCTIONS Algebraic Geometry (math.AG) Mathematics Numerical Analysis Algebra and Number Theory 010102 general mathematics Univariate purl.org/becyt/ford/1.1 [https] 021107 urban & regional planning Multiplicity (mathematics) Mathematics - Commutative Algebra Schur polynomial FORMULAS IN ROOTS Geometry and Topology CIENCIAS NATURALES Y EXACTAS |
| Zdroj: | CONICET Digital (CONICET) Consejo Nacional de Investigaciones Científicas y Técnicas instacron:CONICET |
| Popis: | We generalize Sylvester single sums to multisets and show that these sums compute subresultants of two univariate polynomials as a function of their roots independently of their multiplicity structure. This is the first closed formula for subresultants in terms of roots that works for arbitrary polynomials, previous efforts only handled special cases. Our extension involves in some cases confluent Schur polynomials and is obtained by using multivariate symmetric interpolation via an Exchange Lemma. Fil: D'Andrea, Carlos. Universidad de Barcelona; España Fil: Krick, Teresa Elena Genoveva. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Investigaciones Matemáticas "Luis A. Santaló". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Investigaciones Matemáticas "Luis A. Santaló"; Argentina Fil: Szanto, Agnes. North Carolina State University; Estados Unidos Fil: Valdettaro, Marcelo Alejandro. Universidad de Buenos Aires; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina |
| Databáze: | OpenAIRE |
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