Results 111 to 120 of about 68,458 (245)

On the Existence of Jenkins-Strebel Differentials Using Harmonic Maps from Surfaces to Graphs

open access: yes, 1994
We give a new proof of the existence (\cite{HM}, \cite{Ren}) of a Jenkins-Strebel differential $\Phi$ on a Riemann surface $\SR$ with prescribed heights of cylinders by considering the harmonic map from $\SR$ to the leaf space of the vertical foliation ...
Wolf, Michael
core  

Degrees of maps and multiscale geometry

open access: yesForum of Mathematics, Pi
We study the degree of an L-Lipschitz map between Riemannian manifolds, proving new upper bounds and constructing new examples. For instance, if $X_k$ is the connected sum of k copies of $\mathbb CP^2$ for $k \ge 4$ , then we prove ...
Aleksandr Berdnikov   +2 more
doaj   +1 more source

Riemannian Optimization for Active Mapping With Robot Teams

open access: yesIEEE Transactions on Robotics
Autonomous exploration of unknown environments using a team of mobile robots demands distributed perception and planning strategies to enable efficient and scalable performance. Ideally, each robot should update its map and plan its motion not only relying on its own observations, but also considering the observations of its peers.
Arash Asgharivaskasi   +2 more
openaire   +2 more sources

Volume Comparison in the presence of a Gromov-Hausdorff ε−approximation II

open access: yesAnnals of the West University of Timisoara: Mathematics and Computer Science, 2018
Let (M, g) be any compact, connected, Riemannian manifold of dimension n. We use a transport of measures and the barycentre to construct a map from (M, g) onto a Hyperbolic manifold (ℍn/Λ, g0) (Λ is a torsionless subgroup of Isom(ℍn,g0)), in such a way ...
Sabatini Luca
doaj   +1 more source

Harmonic-hyperbolic geometric flow

open access: yesElectronic Journal of Differential Equations, 2017
In this article we study a coupled system for hyperbolic geometric flow on a closed manifold M, with a harmonic flow map from M to some closed target manifold N. Then we show that this flow has a unique solution for a short-time.
Shahroud Azami
doaj  

Energy estimates of harmonic maps between Riemannian manifolds [PDF]

open access: green, 2020
Maria Alessandra Ragusa   +1 more
openalex   +1 more source

Geodesic Dynamics for Constrained State-Space Models on Riemannian Manifolds

open access: yesMathematics
We present a geodesic dynamics framework for discrete-time state evolution on the unit sphere SN−1 that maintains exact unit-norm constraints through Riemannian exponential mapping.
Tianyu Wang   +3 more
doaj   +1 more source

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