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An Inverse Galois Deformation Problem

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Abstract

Suppose ρ¯:\Gal(F¯/F)→\GL2(k) is a residual Galois representation satisfying several mild conditions, where F is a number field and k is a finite field with characteristics p≥7. In this work, we show that for any finite flat reduced complete intersection over W(k), R, we can construct a deformation problem defined by local conditions imposed on some finite set of places in F, such that the corresponding universal deformation ring of ρ¯ is R. It's a theorem of Wiles that if the local conditions are chosen to express restriction to deformations coming from modular forms, then the corresponding universal deformation ring is a finite flat reduced complete intersection, so our work can be regarded as a converse to Wiles' result.

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2018-08-30

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Galois representation; number theory; universal deformation ring; Mathematics; deformation theory

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Committee Chair

Ramakrishna, Ravi Kumar

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Zywina, David J.
Templier, Nicolas P.

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Mathematics

Degree Name

Ph. D., Mathematics

Degree Level

Doctor of Philosophy

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Government Document

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dissertation or thesis

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