Results 31 to 40 of about 253,345 (276)

Starshaped locally convex hypersurfaces with prescribed curvature and boundary [PDF]

open access: yes, 2015
In this paper we find strictly locally convex hypersurfaces in $\mathbb{R}^{n+1}$ with prescribed curvature and boundary. The main result is that if the given data admits a strictly locally convex radial graph as a subsolution, we can find a radial graph
Su, Chenyang
core   +3 more sources

Competitively Chasing Convex Bodies [PDF]

open access: yesSIAM Journal on Computing, 2019
Let $\mathcal{F}$ be a family of sets in some metric space. In the $\mathcal{F}$-chasing problem, an online algorithm observes a request sequence of sets in $\mathcal{F}$ and responds (online) by giving a sequence of points in these sets. The movement cost is the distance between consecutive such points.
Sébastien Bubeck   +3 more
openaire   +3 more sources

A parallel ADMM-based convex clustering method

open access: yesEURASIP Journal on Advances in Signal Processing, 2022
Convex clustering has received recently an increased interest as a valuable method for unsupervised learning. Unlike conventional clustering methods such as k-means, its formulation corresponds to solving a convex optimization problem and hence ...
Lidija Fodor   +3 more
doaj   +1 more source

On Some Results in the Geometry of Convex Bodies and their Applications

open access: yesМоделирование и анализ информационных систем, 2015
We give a survey of some results in the geometry of convex bodies and their applications.
M. V. Nevskii
doaj   +1 more source

The heart of a convex body [PDF]

open access: yes, 2012
We investigate some basic properties of the {\it heart} $\heartsuit(\mathcal{K})$ of a convex set $\mathcal{K}.$ It is a subset of $\mathcal{K},$ whose definition is based on mirror reflections of euclidean space, and is a non-local object.
C. Carstensen   +19 more
core   +5 more sources

Joint Rigid Body Localization and Wireless Signal Transmission Parameter Estimation Under NLOS Environment

open access: yesIEEE Access, 2023
To improve the performance of the rigid body localization (RBL) in the non-line-of-sight (NLOS) environment, this paper delves into a joint estimation method about the wireless signal transmission parameter and the attitude parameters of the rigid body ...
Pengwu Wan   +3 more
doaj   +1 more source

Phase retrieval for characteristic functions of convex bodies and reconstruction from covariograms [PDF]

open access: yes, 2010
We propose strongly consistent algorithms for reconstructing the characteristic function 1_K of an unknown convex body K in R^n from possibly noisy measurements of the modulus of its Fourier transform \hat{1_K}.
Bianchi, Gabriele   +2 more
core   +3 more sources

The Heat Transfer Problem in a Non-Convex Body—A New Procedure for Constructing Solutions

open access: yesAxioms, 2023
The subject of this work is the coupled steady-state conduction-radiation-convection heat transfer phenomenon in a non-convex blackbody, which is represented by a second-order partial differential equation (representing the heat conduction inside the ...
Rogério Martins Saldanha da Gama
doaj   +1 more source

Caenorhinus lobanovi, a new species of the tribe Deporaini (Coleoptera: Rhynchitidae) from Laos [PDF]

open access: yesКавказский энтомологический бюллетень, 2021
A new species, Caenorhinus (Flavodeporaus) lobanovi sp. n. from Central Laos is described and illustrated. This new species differs from Caenorhinus (Flavodeporaus) guskovae Legalov, 2021 from Laos in the unicoloured body (in C.
A.A. Legalov
doaj   +1 more source

Nested Convex Bodies are Chaseable [PDF]

open access: yesAlgorithmica, 2018
In the Convex Body Chasing problem, we are given an initial point $v_0$ in $R^d$ and an online sequence of $n$ convex bodies $F_1, ..., F_n$. When we receive $F_i$, we are required to move inside $F_i$. Our goal is to minimize the total distance travelled. This fundamental online problem was first studied by Friedman and Linial (DCG 1993).
Bansal, Nikhil   +4 more
openaire   +7 more sources

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