Results 21 to 30 of about 4,101,445 (240)

Chebyshev centers, ?-Chebyshev centers and the Hausdorff metric

open access: yesManuscripta Mathematica, 1989
In this paper, we affirmatively answer an open question raised by P.Szeptycki and Vlech in (9) and give a new characterization of p-uniformly convex Banach space. The Lipschitz stability of the set of e-Chebyshev centers Ge(A) under the perturbations of A and G is also proved.
Wang, Jia-ping, Yu, Xin-tai
openaire   +1 more source

Spectral functions and time evolution from the Chebyshev recursion [PDF]

open access: yes, 2015
We link linear prediction of Chebyshev and Fourier expansions to analytic continuation. We push the resolution in the Chebyshev-based computation of $T=0$ many-body spectral functions to a much higher precision by deriving a modified Chebyshev series ...
Justiniano, Jorge A.   +3 more
core   +2 more sources

A numerical algorithm for attaining the Chebyshev bound in optimal learning [PDF]

open access: yesarXiv.org, 2023
Given a compact subset of a Banach space, the Chebyshev center problem consists of finding a minimal circumscribing ball containing the set. In this article we establish a numerically tractable algorithm for solving the Chebyshev center problem in the ...
P. Paruchuri, D. Chatterjee
semanticscholar   +1 more source

High Stop Band Rejection for Ceramic Loaded Waveguide Filters

open access: yesIEEE Access, 2020
This Paper describes the design procedure of a compact narrowband ceramic loaded filters with wide out of band response. The idea of loading the waveguide filter resonators with ceramic TEM blocks and ceramic ridge blocks are presented. Resonator loading
Sharjeel Afridi   +5 more
doaj   +1 more source

Substrate Integrated Waveguide Quasi-Elliptic Filter with Arbitrary Termination Impedances [PDF]

open access: yesJournal of Electromagnetic Engineering and Science, 2022
This paper presents a quasi-elliptic filter (QEF) with arbitrary termination impedances (ATI). The proposed QEF is designed by adding cross-coupling between the first and last resonators of an ATI bandpass filter (BPF) with the Chebyshev response.
Phanam Pech   +3 more
doaj   +1 more source

Chebyshev's bias against splitting and principal primes in global fields [PDF]

open access: yesJournal of Number Theory, 2022
A reason for the emergence of Chebyshev’s bias is investigated. The Deep Riemann Hypothesis (DRH) enables us to reveal that the bias is a natural phenomenon for making a well-balanced disposition of the whole sequence of primes, in the sense that the ...
Miho Aoki, S. Koyama
semanticscholar   +1 more source

A Multisection Broadband Impedance Transforming Branch-Line Hybrid [PDF]

open access: yes, 1995
Measurements and design equations for a two section impedance transforming hybrid suitable for MMIC applications and a new method of synthesis for multisection branch-line hybrids are reported.
Danshin, T., Kumar, S., Tannous, C.
core   +2 more sources

Dynamic multi‐objective optimisation of complex networks based on evolutionary computation

open access: yesIET Networks, EarlyView., 2022
Abstract As the problems concerning the number of information to be optimised is increasing, the optimisation level is getting higher, the target information is more diversified, and the algorithms are becoming more complex; the traditional algorithms such as particle swarm and differential evolution are far from being able to deal with this situation ...
Linfeng Huang
wiley   +1 more source

Non-archimedean Chebyshev centers

open access: yesIndagationes Mathematicae (Proceedings), 1987
The authors study the best simultaneous approximation property in ultrametric spaces, that is metric spaces (E,d) whose distance satisfy the strong triangle inequality (i.e. d(x,y)\(\leq \max \{d(x,z),d(z,y)\}\) for all x,y,z\(\in E)\). For that the following defnition of Chebyshev centers is used: given a subset W of E and a bounded subset B of E, a ...
Martinez-Maurica, J., Pellón, M.T.
openaire   +2 more sources

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