Results 1 to 10 of about 49,111 (227)
Two-Torsion Subgroups of some Modular Jacobians [PDF]
International 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. The correspondence is used to explicitly write down a zero-dimensional scheme whose points correspond to elements ...
Elvira Lupoian
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Torsion generators of the twist subgroup [PDF]
Tohoku Mathematical Journal, 2022 10 pages, 6 figures.
Tüli̇n Altunöz +2 more
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Bounds on the torsion subgroups of Néron–Severi groups [PDF]
Transactions of the American Mathematical Society, 2020 Let X ↪ P r X \hookrightarrow \mathbb {P}^r be a smooth projective variety defined by homogeneous polynomials of degree ≤ d \leq d . We give an explicit upper bound on the order of the torsion subgroup ( NS
Hyuk Jun Kweon
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Strongly pure subgroups of separable torsion-free abelian groups [PDF]
Transactions of the American Mathematical Society, 1985 A subgroup S of an abelian group G is said to be strongly pure if to each \(a\in S\) there is a homomorphism \(f: G\to S\) such that \(f(a)=a\). The author proves that a countable strongly pure subgroup of a torsion-free completely decomposable abelian group is again completely decomposable.
Loyiso G. Nongxa
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A Note on the Square Subgroups of Decomposable Torsion-Free Abelian Groups of Rank Three [PDF]
Annales Mathematicae Silesianae, 2018 A hypothesis stated in [16] is confirmed for the case of associative rings. The answers to some questions posed in the mentioned paper are also given. The square subgroup of a completely decomposable torsion-free abelian group is described (in both cases
Woronowicz Mateusz
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Torsion-free subgroups of triangle groups [PDF]
Proceedings of the American Mathematical Society, 1971 Certain torsion-free subgroups of various triangle groups are considered, the proof of their existence, and in some cases their calculation outlined. There is one section which treats certain specific triangle groups, and one which treats the general case.
R. D. Feuer
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Quadratic torsion subgroups of modular Jacobian varieties [PDF]
Israel Journal of Mathematics, 2019 arXiv admin note: text overlap with arXiv:1709 ...
Yuan Ren
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Torsion Groups with the Norm of pd-Subgroup of Finite Index
Researches in MathematicsThe 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
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On purifiable torsion-free rank-one subgroups [PDF]
Hokkaido Mathematical Journal, 2001 The paper deals with arbitrary (mixed) Abelian groups. The torsion-free subgroups of rank \(1\) that are (\(p\)-)purifiable, i.e., contained in a minimal (\(p\)-)pure subgroup (a (\(p\)-)pure hull), are characterized (Theorem~3.2). Theorem~2.9 probably contains what the author describes as ``the structure of pure hulls''.
Takashi Okuyama
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Coronal alignment does not enable to predict the degree of femoral and tibial torsion [PDF]
Journal of Experimental OrthopaedicsPurpose 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
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