Results 41 to 50 of about 1,083,966 (327)

Abel–Jacobi map and curvature of the pulled back metric

open access: yesBulletin of Mathematical Sciences, 2021
Let X be a compact connected Riemann surface of genus at least two. The Abel–Jacobi map φ:Symd(X)→Picd(X) is an embedding if d is less than the gonality of X. We investigate the curvature of the pull-back, by φ, of the flat metric on Picd(X).
Indranil Biswas
doaj   +1 more source

All metrics have curvature tensors characterised by its invariants as a limit: the \epsilon-property [PDF]

open access: yes, 2011
We prove a generalisation of the $\epsilon$-property, namely that for any dimension and signature, a metric which is not characterised by its polynomial scalar curvature invariants, there is a frame such that the components of the curvature tensors can ...
Cartan E   +9 more
core   +2 more sources

Novel Topological Phase with a Zero Berry Curvature. [PDF]

open access: yesPhysical Review Letters, 2017
We present a two-dimensional (2D) lattice model that exhibits a nontrivial topological phase in the absence of the Berry curvature. Instead, the Berry connection provides the topological nontrivial phase in the model, whose integration over the momentum ...
Feng Liu, K. Wakabayashi
semanticscholar   +1 more source

Geometric characteristics of quantum evolution: curvature and torsion

open access: yesCondensed Matter Physics, 2017
We study characteristics of quantum evolution which can be called curvature and torsion. The curvature shows a deviation of the state vector in quantum evolution from the geodesic line.
H.P. Laba, V.M. Tkachuk
doaj   +1 more source

Nanoplasmonic Sensor Detects Preferential Binding of IRSp53 to Negative Membrane Curvature

open access: yesFrontiers in Chemistry, 2019
Biosensors based on plasmonic nanostructures are widely used in various applications and benefit from numerous operational advantages. One type of application where nanostructured sensors provide unique value in comparison with, for instance ...
G. Emilsson   +8 more
semanticscholar   +1 more source

Influence of the Size and Curvedness of Neural Projections on the Orientationally Averaged Diffusion MR Signal

open access: yesFrontiers in Physics, 2018
Neuronal and glial projections can be envisioned to be tubes of infinitesimal diameter as far as diffusion magnetic resonance (MR) measurements via clinical scanners are concerned.
Evren Özarslan   +6 more
doaj   +1 more source

Geometric Analysis of Seed Shape Diversity in the Cucurbitaceae

open access: yesSeeds, 2023
The Cucurbitaceae is a monophyletic family with close to 1000 species of climbers, including important agronomic species and varieties characterized by tendrils and pepo fruits.
José Javier Martín-Gómez   +4 more
doaj   +1 more source

On Approximating the Number of $k$-cliques in Sublinear Time

open access: yes, 2018
We study the problem of approximating the number of $k$-cliques in a graph when given query access to the graph. We consider the standard query model for general graphs via (1) degree queries, (2) neighbor queries and (3) pair queries.
Avron H.   +7 more
core   +1 more source

A Model of the Moment Curvature Relation for RC Beams Strengthened with Prestressed CFRP Laminates

open access: yesArchives of Civil Engineering, 2019
The paper presents an analysis of the behaviour of bent reinforced concrete beams strengthened with CFRP laminates fixed with adhesive before and after unloading, and more importantly, an analysis of the work of reinforced concrete beams strengthened ...
Korentz J.
doaj   +1 more source

Finsler manifolds with Positive Weighted Flag Curvature [PDF]

open access: yesarXiv, 2023
The flag curvature is a natural extension of the sectional curvature in Riemannian geometry. However there are many non-Riemannian quantities which interact the flag curvature. In this paper, we introduce a notion of weighted flag curvature by modifying the flag curvature with the non-Riemannian quantity, T-curvature. We show that a proper open forward
arxiv  

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