Results 71 to 80 of about 4,323 (217)

Poincaré Map and Periodic Solutions of First-Order Impulsive Differential Equations on Moebius Stripe [PDF]

open access: yes, 2013
This paper is mainly concerned with the existence, stability, and bifurcations of periodic solutions of a certain scalar impulsive differential equations on Moebius stripe.
Yepeng Xing, Yefeng He
core   +1 more source

Establishing Shape Correspondences: A Survey

open access: yesComputer Graphics Forum, EarlyView.
Abstract Shape correspondence between surfaces in 3D is a central problem in geometry processing, concerned with establishing meaningful relations between surfaces. While all correspondence problems share this goal, specific formulations can differ significantly: Downstream applications require certain properties that correspondences must satisfy ...
A. Heuschling, H. Meinhold, L. Kobbelt
wiley   +1 more source

Poincaré map θ' = F(θ) and its dynamics. [PDF]

open access: yes, 2013
A: Two examples of numerically obtained Poincaré map for two different values of P. Representation of the return map was restricted to the angular values: θ to θ'.
Taishin Nomura (371899)   +5 more
core   +1 more source

Poincaré Embeddings in the Task of Named Entity Recognition [PDF]

open access: yes, 2020
Hyperbolic embeddings have become important in many natural language processing tasks due to their great ability to capture latent hierarchical data and to encode valuable syntactic and semantic information.
Muñoz, David   +5 more
core   +1 more source

Infinitely many periodic solutions of planar Hamiltonian systems via the Poincaré–Birkhoff theorem

open access: yesBoundary Value Problems, 2018
In this paper, we study the multiplicity of periodic solutions of one kind of planar Hamiltonian systems with a nonlinear term satisfying semilinear conditions.
Zaihong Wang, Tiantian Ma
doaj   +1 more source

Scalable Computation of Topological Abstractions for Scalar Data

open access: yesComputer Graphics Forum, EarlyView.
Abstract Topological data analysis has become an important tool for large scale scalar data analysis and visualization, efficiently extracting the inherent structure and features of interest of the data. However, with growing dataset sizes and complexity, it is increasingly becoming infeasible to compute topological abstractions of interest in serial ...
M. Will   +6 more
wiley   +1 more source

Poincaré duality in equivariant intersection theory [PDF]

open access: yes, 2014
We study the Poincaré duality map from equivariant Chow cohomology to equivariant Chow groups in the case of torus actions on complete, possibly singular, varieties with isolated fixed points.
Gonzales Vilcarromero, Richard Paul
core   +1 more source

New variational and multisymplectic formulations of the Euler-Poincaré equation on the Virasoro-Bott group using the inverse map [PDF]

open access: yes, 2018
We derive a new variational principle, leading to a new momentum map and a new multisymplectic formulation for a family of Euler–Poincaré equations defined on the Virasoro–Bott group, by using the inverse map (also called ‘back-to-labels’ map).
Tyranowski, T.   +3 more
core   +1 more source

Double Grazing Periodic Motions and Bifurcations in a Vibroimpact System with Bilateral Stops

open access: yesAbstract and Applied Analysis, 2014
The double grazing periodic motions and bifurcations are investigated for a two-degree-of-freedom vibroimpact system with symmetrical rigid stops in this paper.
Qunhong Li   +3 more
doaj   +1 more source

Medial Axis Aware Learning of Signed Distance Functions

open access: yesComputer Graphics Forum, EarlyView.
Abstract We propose a novel variational method to compute a highly accurate global signed distance function (SDF) to a given point cloud. To this end, the jump set of the gradient of the SDF, which coincides with the medial axis of the surface, is explicitly taken into account through a higher‐order variational formulation that enforces linear growth ...
Samuel Weidemaier   +2 more
wiley   +1 more source

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