Results 11 to 20 of about 773,208 (320)

The p-torsion subgroup scheme of an elliptic curve

open access: bronzeJournal of Number Theory, 2011
Let $k$ be a field of positive characteristic $p$. Question: Does every twisted form of $ _p$ over $k$ occur as subgroup scheme of an elliptic curve over $k$? We show that this is true for most finite fields, for local fields and for fields of characteristic $p\leq11$.
Christian Liedtke
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Torsion subgroups of quasi-abelianized braid groups

open access: greenJournal of Algebra, 2017
This article extends the works of Gonçalves, Guaschi, Ocampo [GGO] and Marin [MAR2] on finite subgroups of the quotients of generalized braid groups by the derived subgroup of their pure braid group. We get explicit criteria for subgroups of the (complex) reflection group to lift to subgroups of this quotient.
Vincent Beck, Iván Marín
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Inferior oblique graded marginal myotomy versus myectomy for treatment of inferior oblique overaction [PDF]

open access: yesIndian Journal of Ophthalmology
Purpose: To evaluate and compare the surgical outcomes of inferior oblique marginal myotomy versus myectomy for treatment of inferior oblique overaction (in terms of correction of upshoot on adduction, V pattern, vertical deviation, torsion, and abnormal
Mai Mostafa Ismail Hassan   +4 more
doaj   +2 more sources

Group rings whose torsion units form a subgroup [PDF]

open access: yesProceedings of the American Mathematical Society, 1981
Denote by T U ( Z G ) TU({\mathbf {Z}}G) the set of units of finite order of the integral group ring of a group G G . We determine the class of all groups G G such that T U (
C. P. Milies
semanticscholar   +3 more sources

Torsion Subgroups of Groups with Quadratic Dehn Function

open access: greenMemoirs of the American Mathematical Society, 2020
We construct the first examples of finitely presented groups with quadratic Dehn function containing a finitely generated infinite torsion subgroup. These examples are “optimal” in the sense that the Dehn function of any such finitely presented group must be at least quadratic. Moreover, we show that for any n ≥ 2
F. Wágner
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Torsion Groups with the Norm of pd-Subgroup of Finite Index

open access: goldResearches in Mathematics
The authors study the relations between the properties of torsion groups and their norms of $pd$-subgroups. The norm $N_G^{pdI}$ of $pd$-subgroups of a group $G$ is the intersection of the normalizers of all its $pd$-subgroups or a group itself, if the ...
T.D. Lukashova   +2 more
doaj   +2 more sources

Commutative subgroups and torsion in compact Lie groups [PDF]

open access: goldBulletin of the American Mathematical Society, 1960
Armand Borel
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Symmetric Riemann surfaces, torsion subgroups and Schottky coverings [PDF]

open access: bronzeProceedings of the American Mathematical Society, 1987
We consider a torsion-free Fuchsian group G G acting on H H which admits an orientation reversing involution j j . That is, j G j = G jGj = G . Let T T be the orientation preserving half of the torsion subgroup of the extended ...
Blaise Heltai
openalex   +4 more sources

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