Results 81 to 90 of about 49,111 (227)

Degree theory for 4‐dimensional asymptotically conical gradient expanding solitons

open access: yesCommunications on Pure and Applied Mathematics, EarlyView.
Abstract We develop a new degree theory for 4‐dimensional, asymptotically conical gradient expanding solitons. Our theory implies the existence of gradient expanding solitons that are asymptotic to any given cone over S3$S^3$ with non‐negative scalar curvature. We also obtain a similar existence result for cones whose link is diffeomorphic to S3/Γ$S^3/\
Richard H. Bamler, Eric Chen
wiley   +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

A Comparative Study of Ultrasonography and CT Venography in the Diagnosis of Budd‐Chiari Syndrome

open access: yesJournal of Clinical Ultrasound, EarlyView.
Budd‐Chiari syndrome (BCS) is characterized by hepatic venous outflow obstruction from the hepatic veins to the junction of the inferior vena cava (IVC) and right atrium. Ultrasound (US) and CT venography (CTV) are used as imaging techniques for the diagnosis of BCS, and We compared the diagnostic efficacy of the two modalities. The results showed that
Tiling Jiang   +6 more
wiley   +1 more source

Visual intraoperative estimation of cup and stem position is not reliable in minimally invasive hip arthroplasty

open access: yesActa Orthopaedica, 2016
Background and purpose — In hip arthroplasty, acetabular inclination and anteversion—and also femoral stem torsion—are generally assessed by eye intraoperatively. We assessed whether visual estimation of cup and stem position is reliable.
Michael Woerner   +7 more
doaj   +1 more source

Curvature and torsion pseudotensors of coaffine connection in tangent bundle of hypercentred planes manifold

open access: yesДифференциальная геометрия многообразий фигур, 2020
The hypercentered planes family, whose dimension coincides with dimension of generating plane, is considered in the projective space. Two principal fiber bundles arise over it.
A.V. Vyalova
doaj   +1 more source

Dimensional reduction of higher derivative heterotic supergravity

open access: yesJournal of High Energy Physics, 2022
Higher derivative couplings of hypermultiplets to 6D, N = (1, 0) supergravity are obtained from dimensional reduction of 10D heterotic supergravity that includes order α′ higher derivative corrections.
Hao-Yuan Chang   +2 more
doaj   +1 more source

The meniscofemoral ligaments do not contribute to restriction of posterior tibial translation: A robotic biomechanical analysis

open access: yesKnee Surgery, Sports Traumatology, Arthroscopy, EarlyView.
Abstract Purpose The aim of this study was to quantify the contribution of the meniscofemoral ligaments (MFLs) on restraining a posterior tibial translation (PTT) in the human knee joint. Methods Sixteen human cadaveric knee joints were tested in a robotic test setup with six degrees of freedom.
Lucas Palma Kries   +7 more
wiley   +1 more source

The Indices of Torsion-Free Subgroups of Fuchsian Groups [PDF]

open access: yesProceedings of the American Mathematical Society, 1983
Elementary algebraic techniques are used to obtain the precise possible indices of torsion-free subgroups of finite index of finitely generated Fuchsian groups (and related groups).
Burns, R. G., Solitar, Donald
openaire   +1 more source

Lateral meniscus injuries have more impact on pivot shift than anterolateral complex injuries in anterior cruciate ligament‐injured knees

open access: yesKnee Surgery, Sports Traumatology, Arthroscopy, EarlyView.
Abstract Purpose The purpose of this prospective study was to investigate the effect of Kaplan fibres (KF), anterolateral ligament (ALL) and lateral meniscus (LM) injuries on preoperative anterolateral rotational instability (ALRI) in anterior cruciate ligament (ACL)‐injured knees.
Lukas Willinger   +6 more
wiley   +1 more source

Distortion maps for supersingular genus two curves

open access: yesJournal of Mathematical Cryptology, 2009
Distortion maps are a useful tool for pairing based cryptography. Compared with elliptic curves, the case of hyperelliptic curves of genus g > 1 is more complicated, since the full torsion subgroup has rank 2g.
Galbraith Steven D.   +3 more
doaj   +1 more source

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