Results 101 to 110 of about 773,208 (320)

Torsion subgroups of elliptic curves over quintic and sextic number fields [PDF]

open access: yes, 2016
Let $\Phi^\infty(d)$ denote the set of finite abelian groups that occur infinitely often as the torsion subgroup of an elliptic curve over a number field of degree $d$. The sets $\Phi^\infty(d)$ are known for $d\le 4$. In this article we determine $\Phi^\
M. Derickx, Andrew V. Sutherland
semanticscholar   +1 more source

Statistical shape modeling of the human inner ear through micro‐computed tomography imaging

open access: yesThe Anatomical Record, EarlyView.
In this study, 54 cadaveric temporal bone specimens underwent high‐resolution micro‐CT imaging. Images were semi‐automatically segmented and converted to 3D surface mesh models for morphological measurement and analysis. Statistical shape models were created for the inner ear, cochlea, and vestibular system, as well as for sex‐ and side‐based subgroups.
Carmine Spedaliere   +8 more
wiley   +1 more source

General relativity as a biconformal gauge theory

open access: yesNuclear Physics B, 2019
We consider the conformal group of a space of dimn=p+q, with SO(p,q) metric. The quotient of this group by its homogeneous Weyl subgroup gives a principal fiber bundle with 2n-dim base manifold and Weyl fibers.
James T. Wheeler
doaj   +1 more source

On the torsion of rational elliptic curves over sextic fields [PDF]

open access: yesMathematics of Computation, 2018
Given an elliptic curve $E/\mathbb{Q}$ with torsion subgroup $G = E(\mathbb{Q})_{\rm tors}$ we study what groups (up to isomorphism) can occur as the torsion subgroup of $E$ base-extended to $K$, a degree 6 extension of $\mathbb{Q}$.
Harris B. Daniels   +1 more
semanticscholar   +1 more source

Hidden torsion, 3-manifolds, and homology cobordism

open access: yes, 2012
This paper continues our exploration of homology cobordism of 3-manifolds using our recent results on Cheeger-Gromov rho-invariants associated to amenable representations.
Cha, Jae Choon, Orr, Kent E.
core   +1 more source

Advanced Quantitative Microstructure Imaging in Autism: A Review of Methodology, Group Differences, and Associations With Developmental Outcomes

open access: yesAutism Research, EarlyView.
ABSTRACT Emerging evidence highlights widespread alterations in white matter microstructure in autism. Advances in magnetic resonance imaging (MRI) have enabled more precise examinations of these microstructural changes, leading to increased use of quantitative MRI techniques in autism research.
Christy D. Yoon, Douglas C. Dean III
wiley   +1 more source

Hip MRI in flexion abduction external rotation for assessment of the ischiofemoral interval in patients with hip pain—a feasibility study

open access: yesInsights into Imaging, 2023
Objectives To assess the feasibility of flexion-abduction-external rotation (FABER) magnetic resonance imaging (MRI) of the hip to visualize changes in the ischiofemoral interval and ability to provoke foveal excursion over the acetabular rim.
Alexander F. Heimann   +10 more
doaj   +1 more source

Bounds on the torsion subgroups of Néron–Severi groups [PDF]

open access: yesTransactions 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
openaire   +2 more sources

Impact of Epicardial plaQUe Composition and geomeTry on Coronary hEmodynamics and Flow in Patients With Coronary Artery Disease (iEquate)

open access: yesCatheterization and Cardiovascular Interventions, EarlyView.
ABSTRACT Background Invasive coronary physiology including fractional flow reserve (FFR), instantaneous wave‐free ratio (iFR), and coronary flow reserve (CFR) are guideline‐endorsed tools to guide the management of coronary artery disease (CAD). Complex factors impact and confound these assessments, and discordance between modalities complicates ...
Avedis Ekmejian   +6 more
wiley   +1 more source

Structure of Finite-Dimensional Protori

open access: yesAxioms, 2019
A Structure Theorem for Protori is derived for the category of finite-dimensional protori (compact connected abelian groups), which details the interplay between the properties of density, discreteness, torsion, and divisibility within a finite ...
Wayne Lewis
doaj   +1 more source

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