Monte_Cooper_Dissertation[FINAL].pdf (462.33 kB)

BOUNDING THE DEGREES OF THE DEFINING EQUATIONSOF REES RINGS FOR CERTAIN DETERMINANTAL AND PFAFFIAN IDEALS

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posted on 29.07.2020 by Monte J Cooper
We consider ideals of minors of a matrix, ideals of minors of a symmetric matrix, and ideals of Pfaffians of an alternating matrix. Assuming these ideals are of generic height, we characterize the condition $G_{s}$ for these ideals in terms of the heights of smaller ideals of minors or Pfaffians of the same matrix. We additionally obtain bounds on the generation and concentration degrees of the defining equations of Rees rings for a subclass of such ideals via specialization of the Rees rings in the generic case. We do this by proving that, given sufficient height conditions on ideals of minors or Pfaffians of the matrix, the specialization of a resolution of a graded component of the Rees ring in the generic case is an approximate resolution of the same component of the Rees ring in question. We end the paper by giving some examples of explicit generation and concentration degree bounds.

History

Degree Type

Doctor of Philosophy

Department

Mathematics

Campus location

West Lafayette

Advisor/Supervisor/Committee Chair

Bernd Ulrich

Additional Committee Member 2

William J. Heinzer

Additional Committee Member 3

Giulio Caviglia

Additional Committee Member 4

Linquan Ma

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