Results 41 to 50 of about 1,726,170 (370)

Contact fiber bundles [PDF]

open access: yesJournal of Geometry and Physics, 2004
We define contact fiber bundles and investigate conditions for the existence of contact structures on the total space of such a bundle. The results are analogous to minimal coupling in symplectic geometry. The two applications are construction of K-contact manifolds generalizing Yamazaki's fiber join construction and a cross-section theorem for contact
openaire   +4 more sources

Homotopy equivalence of fiber bundles [PDF]

open access: yesProceedings of the American Mathematical Society, 1958
2. The classification theorem. We use the notation and results of [3]. We require that the base space B be a polyhedron because this allows us to use a result of A. Dold [2 ] to simplify both the statement and proof of the theorem. We will assume that the fiber F is locally compact and let M be the space of maps F-*F which have homotopy inverses ...
R. Lashof, M. L. Curtis
openaire   +3 more sources

White Matter Microstructural Differences between Essential Tremor and Parkinson Disease, Evaluated Using Advanced Diffusion MRI Biomarkers

open access: yesJournal of Integrative Neuroscience, 2023
Background: Essential tremor (ET) is a common slowly-progressive neurologic disorder. It is predominantly characterized by kinetic tremors involving bilateral upper limbs.
Maurizio Bergamino   +4 more
doaj   +1 more source

Glued linear connection on surface of the projective space

open access: yesДифференциальная геометрия многообразий фигур, 2020
We consider a surface as a variety of centered planes in a multidi­mensional projective space. A fiber bundle of the linear coframes appears over this manifold. It is important to emphasize the fiber bundle is not the principal bundle.
K.V. Bashashina
doaj   +1 more source

Cohomology of GKM fiber bundles [PDF]

open access: yesJournal of Algebraic Combinatorics, 2011
The equivariant cohomology ring of a GKM manifold is isomorphic to the cohomology ring of its GKM graph. In this paper we explore the implications of this fact for equivariant fiber bundles for which the total space and the base space are both GKM and derive a graph theoretical version of the Leray-Hirsch theorem.
Sabatini, Silvia   +2 more
openaire   +6 more sources

Complex collagen fiber and membrane morphologies of the whole porcine aortic valve. [PDF]

open access: yesPLoS ONE, 2014
Replacement aortic valves endeavor to mimic native valve function at the organ, tissue, and in the case of bioprosthetic valves, the cellular levels.
Christopher A Rock   +2 more
doaj   +1 more source

Martingales on principal fiber bundles

open access: yesProyecciones (Antofagasta), 2023
Let P(M,G) be a principal fiber bundle, let ω be a connection form on P(M,G), and consider a projectable connection ∇P on P(M,G). The aim of this work is to determine the ∇P -martingales in P(M,G). Our results allow establishing new characterizations of harmonic maps from Riemannian manifolds to principal fiber bundles.
Catuogno, Pedro, Stelmastchuk, Simão N.
openaire   +2 more sources

Fiber bundle endocytoscopy

open access: yesBiomedical Optics Express, 2013
Endocytoscopy is an optical biopsy technique which uses a miniaturized camera to capture white light microscopy images through an endoscope. We have developed an alternative design that instead relays images to an external camera via a coherent fiber bundle.
Guang-Zhong Yang   +2 more
openaire   +3 more sources

Second harmonic generation light quantifies the ratio of type III to total (I + III) collagen in a bundle of collagen fiber

open access: yesScientific Reports, 2021
The ratio of type III to type I collagen is important for properly maintaining functions of organs and cells. We propose a method to quantify the ratio of type III to total (type I + III) collagen (λ III ) in a given collagen fiber bundle using second ...
Shukei Sugita   +5 more
doaj   +1 more source

Fiber bundles and matrix models [PDF]

open access: yesPhysical Review D, 2008
53 pages, references added, typos ...
Takaaki Ishii   +3 more
openaire   +2 more sources

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