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Two-torsion subgroups of some modular Jacobians [PDF]

open access: greenInternational Journal of Number Theory, 2022
We give a practical method to compute the 2-torsion subgroup of the Jacobian of a non-hyperelliptic curve of genus $3$, $4$ or $5$. The method is based on the correspondence between the 2-torsion subgroup and the theta hyperplanes to the curve.
Elvira Lupoian
semanticscholar   +5 more sources

Specialization of the torsion subgroup of the Chow group [PDF]

open access: greenMathematische Zeitschrift, 2004
An example is given in which specialization is not injective.
Chad Schoen
semanticscholar   +6 more sources

On the non-triviality of the torsion subgroup of the abelianized Johnson kernel [PDF]

open access: greenAnnales de l'Institut Fourier, 2022
The Johnson kernel is the subgroup of the mapping class group of a closed oriented surface that is generated by Dehn twists along separating simple closed curves.
Quentin Faes, Gwénaël Massuyeau
openalex   +2 more sources

A classification of isogeny‐torsion graphs of Q‐isogeny classes of elliptic curves

open access: yesTransactions of the London Mathematical Society, 2021
Let E be a Q‐isogeny class of elliptic curves defined over Q. The isogeny graph associated to E is a graph which has a vertex for each elliptic curve in the Q‐isogeny class E, and an edge for each cyclic Q‐isogeny of prime degree between elliptic curves ...
Garen Chiloyan, Álvaro Lozano‐Robledo
doaj   +2 more sources

Structure of the cuspidal rational torsion subgroup of J_1(p^n) [PDF]

open access: yes, 2008
In this article, we determine the structure of the $p$-primary subgroup of the cuspidal rational torsion subgroup of the Jacobian $J_1(p^n)$ of the modular curve $X_1(p^n)$ for a regular prime $p$.Comment: 26 ...
Yang, Yifan, Yu, Jeng-Daw
core   +2 more sources

On the rational cuspidal subgroup and the rational torsion points of $J_0(pq)$ [PDF]

open access: bronze, 1997
For two distinct prime numbers p, q, we compute the rational cuspidal subgroup C(pq) of Jo(pq) and determine the e-primary part of the rational torsion subgroup of the old subvariety of Jo(pq) for most primes e.
Seng-Kiat Chua, San Ling
openalex   +2 more sources

Coronal alignment does not enable to predict the degree of femoral and tibial torsion [PDF]

open access: yesJournal of Experimental Orthopaedics
Purpose Malalignment of the lower extremity can affect one, two or all three anatomic planes. We hypothesized an influence between the malalignment of the coronal and axial planes.
Leonard Grünwald   +4 more
doaj   +2 more sources

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

Torsion in the knot concordance group and cabling [PDF]

open access: yesJournal of the European Mathematical Society (Print), 2022
We define a nontrivial mod 2 valued additive concordance invariant defined on the torsion subgroup of the knot concordance group using involutive knot Floer package.
Sungkyung Kang, Junghwan Park
semanticscholar   +1 more source

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