Results 11 to 20 of about 760,948 (301)

The rational torsion subgroup of J0(N) [PDF]

open access: yesAdvances in Mathematics, 2021
Let $N$ be a positive integer and let $J_0(N)$ be the Jacobian variety of the modular curve $X_0(N)$. For any prime $p\ge 5$ whose square does not divide $N$, we prove that the $p$-primary subgroup of the rational torsion subgroup of $J_0(N)$ is equal to that of the rational cuspidal divisor class group of $X_0(N)$, which is explicitly computed in ...
Hwajong Yoo
semanticscholar   +3 more sources

Rational torsion in elliptic curves and the cuspidal subgroup [PDF]

open access: yesJournal de Théorie des Nombres de Bordeaux, 2008
Let $A$ be an elliptic curve over $\Q$ of square free conductor $N$. We prove that if $A$ has a rational torsion point of prime order $r$ such that $r$ does not divide $6N$, then $r$ divides the order of the cuspidal subgroup of $J_0(N)$.
Amod Agashe
semanticscholar   +5 more sources

Commutative subgroups and torsion in compact Lie groups [PDF]

open access: goldBulletin of the American Mathematical Society, 1960
Armand Borel
openalex   +3 more sources

Galois theory, discriminants and torsion subgroup of elliptic curves [PDF]

open access: yesJournal of Pure and Applied Algebra, 2008
New version, some typos fixed and the proof of the lemma in the Appendix has been ...
I. García-Selfa   +2 more
semanticscholar   +7 more sources

On purifiable torsion-free rank-one subgroups [PDF]

open access: bronzeHokkaido Mathematical Journal, 2001
First, we give a necessary and sufficient condition for a torsion-free rank-one subgroup of an arbitrary abelian group to be purifiable in a given group and show that all pure hulls of a purifiable torsion-free rank-one subgroup are isomorphic. Next, we show that if a $T(G)$-high subgroup A of an abelian group $G$ is purifiable in $G$, then there ...
Takashi Okuyama
openalex   +3 more sources

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
openalex   +4 more sources

A note on torsion length and torsion subgroups

open access: yesJournal of Group Theory, 2022
Abstract Answering Questions 19.23 and 19.24 from the Kourovka notebook, we construct polycyclic groups with arbitrary torsion lengths and give examples of finitely presented groups whose quotients by their torsion subgroups are not finitely presented.
Leary, Ian, Minasyan, Ashot
openaire   +4 more sources

Decompressive fasciotomy in testicular torsion of the spermatic cord in rats [PDF]

open access: yesActa Cirúrgica Brasileira, 2013
PURPOSE: To evaluate the effect of decompression fasciotomy on testes undergoing torsion of the spermatic cord. METHODS: Spermatic cord torsion was induced in 40 Wistar testes for six and 12 hours.
Isabela Passos Pereira Quintaes   +4 more
doaj   +3 more sources

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