Parametric Galois Extensions and Their Spectral Invariants

In this article we develop a dynamic formulation of Galois theory in which the classical symmetry group of a polynomial is replaced by a parametrized family of groups. The construction centers on a dependency space: a parameter set $\Gamma$ that determines, at each stage, which roots are admitted via a boundary condition in the base field. Each parameter $\gamma$ yields a restricted subfield and automorphism group, and the resulting family forms a projective system under canonical restriction maps. As the boundary varies, the system exhibits both smooth deformations and abrupt collapses of symmetry. We encode each group via its Cayley graph and use spectral invariants of the Laplacian to track structural changes: continuous eigenvalue variation signals stable phases, while jumps mark symmetry transitions. A quartic example demonstrates the framework explicitly.

Publication Details

Journal
Zenodo (CERN European Organization for Nuclear Research)
Published
2025-10-14
DOI
https://doi.org/10.5281/zenodo.17339062
Primary Topic
Homotopy and Cohomology in Algebraic Topology
Type
article
Field-Weighted Citation Impact
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article

Parametric Galois Extensions and Their Spectral Invariants

Zenodo (CERN European Organization for Nuclear Research)
Homotopy and Cohomology in Algebraic Topology
article

Parametric Galois Extensions and Their Spectral Invariants

article en

Abstract

In this article we develop a dynamic formulation of Galois theory in which the classical symmetry group of a polynomial is replaced by a parametrized family of groups. The construction centers on a dependency space: a parameter set $\Gamma$ that determines, at each stage, which roots are admitted via a boundary condition in the base field. Each parameter $\gamma$ yields a restricted subfield and automorphism group, and the resulting family forms a projective system under canonical restriction maps. As the boundary varies, the system exhibits both smooth deformations and abrupt collapses of symmetry. We encode each group via its Cayley graph and use spectral invariants of the Laplacian to track structural changes: continuous eigenvalue variation signals stable phases, while jumps mark symmetry transitions. A quartic example demonstrates the framework explicitly.

Zenodo (CERN European Organization for Nuclear Research)
Openalex Percentile: Top 41%
Homotopy and Cohomology in Algebraic Topology
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