Results 21 to 30 of about 23,993 (138)

Inverse Galois Theory

open access: green, 1999
Gunter Malle, B. Heinrich Matzat
openalex   +3 more sources

The inverse problem of Galois theory: the rigidity method

open access: closed, 2019
Treballs finals del Màster en Matemàtica Avançada, Facultat de matemàtiques, Universitat de Barcelona, Any: 2019, Director: Núria ...
Martínez Marín, Josep Miquel
openalex   +2 more sources

AN EXPLICIT PSp4(3)-POLYNOMIAL WITH 3 PARAMETERS OF DEGREE 40 [PDF]

open access: yes, 2011
We will give an explicit polynomial over ℚ with 3 parameters of degree 40 as a result of the inverse Galois problem. Its Galois group over ℚ (resp. ℚ(√-3)) is isomorphic to PGSp4(3) (resp. PSp4(3)) and it is a regular PSp4(3)-polynomial over ℚ(p√−3).
Kitayama, Hidetaka
core   +1 more source

Branching Data for Algebraic Functions and Representability by Radicals [PDF]

open access: yes, 2011
The branching data of an algebraic function is a list of orders of local monodromies around branching points. We present branching data that ensure that the algebraic functions having them are representable by radicals.
Burda, Yuri, Khovanskii, Askold
core   +1 more source

The Galois group of a stable homotopy theory [PDF]

open access: yes, 2016
To a "stable homotopy theory" (a presentable, symmetric monoidal stable $\infty$-category), we naturally associate a category of finite \'etale algebra objects and, using Grothendieck's categorical machine, a profinite group that we call the Galois group.
Mathew, Akhil
core   +1 more source

Twistings, crossed coproducts and Hopf-Galois coextensions [PDF]

open access: yes, 2002
Let $H$ be a Hopf algebra. Ju and Cai introduced the notion of twisting of an $H$-module coalgebra. In this note, we study the relationship between twistings, crossed coproducts and Hopf-Galois coextensions.
Caenepeel, S.   +2 more
core   +5 more sources

Reduced group schemes as iterative differential Galois groups

open access: yes, 2019
This article is on the inverse Galois problem in Galois theory of linear iterative differential equations in positive characteristic. We show that it has an affirmative answer for reduced algebraic group schemes over any iterative differential field ...
Maurischat, Andreas
core   +1 more source

On the Iwasawa invariants for links and Kida's formula

open access: yes, 2016
Analogues of Iwasawa invariants in the context of 3-dimensional topology have been studied by M.~Morishita and others. In this paper, following the dictionary of arithmetic topology, we formulate an analogue of Kida's formula on $\lambda$-invariants in a
Ueki, Jun
core   +1 more source

On the failure of pseudo-nullity of Iwasawa modules

open access: yes, 2004
We consider the family of CM-fields which are pro-p p-adic Lie extensions of number fields of dimension at least two, which contain the cyclotomic Z_p-extension, and which are ramified at only finitely many primes.
Romyar, T. Sharifi, Yoshitaka Hachimori
core   +2 more sources

Vladimirov–Pearson operators on ζ$\zeta$‐regular ultrametric Cantor sets

open access: yesMathematische Nachrichten, Volume 298, Issue 12, Page 3779-3790, December 2025.
Abstract A new operator for certain types of ultrametric Cantor sets is constructed using the measure coming from the spectral triple associated with the Cantor set, as well as its zeta function. Under certain mild conditions on that measure, it is shown that it is an integral operator similar to the Vladimirov–Taibleson operator on the p$p$‐adic ...
Patrick Erik Bradley
wiley   +1 more source

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