Results 51 to 60 of about 772 (199)

Galois module structure of abelian extensions.

open access: yesJournal für die reine und angewandte Mathematik (Crelles Journal), 1987
Let \(K\) be a number field with ring of integers \(\mathfrak O_K\). If \(L\) is a finite tamely ramified Galois field extension of \(K\) with Galois group \(G\), then \(\mathfrak O_L\) is a rank one projective \(\mathfrak O_KG\)-module, hence represents a class in the class group \(\text{Cl}(\mathfrak O_KG)\).
openaire   +1 more source

Precrossed modules and Galois theory

open access: yesJournal of Algebra, 2006
Precrossed and crossed modules have an important role in homotopy theory and homological algebra. The adjunction between crossed modules and precrossed modules over a fixed group can be seen as a special case of a more general adjunction between internal groupoids and internal reflexive graphs in a Mal'tsev variety.
Everaert, Tomas, Gran, Marino
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Mordell-Weil group as Galois modules [PDF]

open access: green, 2023
Thomas Vavasour, Christian Wüthrich
openalex   +1 more source

FACTOR EQUIVALENCE OF GALOIS MODULES AND REGULATOR CONSTANTS [PDF]

open access: yesInternational Journal of Number Theory, 2014
We compare two approaches to the study of Galois module structures: on the one hand, factor equivalence, a technique that has been used by Fröhlich and others to investigate the Galois module structure of rings of integers of number fields and of their unit groups, and on the other hand, regulator constants, a set of invariants attached to integral ...
openaire   +3 more sources

Motivic L-functions and Galois module structures

open access: yesMathematische Annalen, 1996
During the last decades, many results about varieties over global fields were (at least conjecturally) generalized to motives, which today occupy a prominent position in arithmetic algebraic geometry. Using perfect complexes and their determinants, the conjectures of Bloch and Kato about \(L\)-functions were recently extended to motives with ...
Burns, D., Flach, M.
openaire   +1 more source

Supersingular Hecke modules as Galois representations [PDF]

open access: green, 2020
Elmar Grosse-Klönne   +1 more
openalex   +1 more source

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