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image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Israel Journal of Ma...arrow_drop_down
image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
Israel Journal of Mathematics
Article . 1994 . Peer-reviewed
License: Springer TDM
Data sources: Crossref
image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
zbMATH Open
Article . 1994
Data sources: zbMATH Open
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Nice equations for nice groups

Authors: Abhyankar, Shreeram S.;

Nice equations for nice groups

Abstract

Une conjecture du auteur, démontrée par \textit{M. Raynaud} et \textit{D. Harbater}, caractérise les groupes de Galois des revêtements de n'importe quelle courbe affine, en caractéristique finie. Le problème inverse de Galois demande de réaliser tout groupe satisfaisant ces conditions comme groupe de Galois d'un revêtement. -- Poursuivant un long programme personnel, l'A. calcule les groupes de Galois de courbes d'équations \(Y^n - aX^r Y^t + bX^s\) où \(n > t > 0\), \(r,s \geq 0\) sont des entiers et \(a,b \neq 0\) sont des éléments d'un corps \(k\) algébriquement clos de caractéristique finie \(p\), vues comme revêtements de l'axe des \(X\) et de l'axe des \(X\) privé de l'origine respectivement. Les valeurs de \(n,r,s\) et \(t\) considérées sont celles qui donnent des revêtements non ramifiés. Soient \(q = p^u\) \((u \in \mathbb{N}^*)\) fixé et \(1 \leq \mu < m\) des entiers, si \(n = (q^m - 1)/(q - 1)\) et \(t = (q^\mu - 1)/(q - 1)\) ou \(t = (q^m - q^\mu)/(q - 1)\) (resp. \(n = q^m - 1\) et \(t = q^\mu - 1\) ou \(t = q^m - q^\mu)\) les groupes obtenus sont, selon les valeurs de \(r\) et \(s\), compris entre \(\text{PSL} (m,q)\) et \(\text{PGL} (m,q)\) (resp. \(\text{SL} (m,q)\) et \(\text{GL} (m,q))\), les cas extrèmes étant atteints.

Related Organizations
Keywords

Finite ground fields in algebraic geometry, Coverings of curves, fundamental group, inverse Galois problem, Galois groups of curves, Inverse Galois theory, finite characteristic

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
31
Average
Top 10%
Top 10%
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