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Degrees of Regular Sequences With a Symmetric Group Action

Published online by Cambridge University Press:  07 January 2019

Federico Galetto
Affiliation:
Department of Mathematics and Statistics, McMaster University, Hamilton ON L8S 4K1 Email: [email protected]
Anthony Vito Geramita
Affiliation:
Department of Mathematics, Queen’s University, Kingston ON K7L 3N6 Email: [email protected]
David Louis Wehlau
Affiliation:
Department of Mathematics and Computer Science, Royal Military College, Kingston ON K7K 7B4 Email: [email protected]
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Abstract

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We consider ideals in a polynomial ring that are generated by regular sequences of homogeneous polynomials and are stable under the action of the symmetric group permuting the variables. In previous work, we determined the possible isomorphism types for these ideals. Following up on that work, we now analyze the possible degrees of the elements in such regular sequences. For each case of our classification, we provide some criteria guaranteeing the existence of regular sequences in certain degrees.

Type
Article
Copyright
© Canadian Mathematical Society 2018 

Footnotes

The authors gratefully acknowledge the partial support of NSERC for this work.

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