Results 61 to 70 of about 3,202,238 (369)

Homogeneity by Isotopy [PDF]

open access: yesProceedings of the American Mathematical Society, 1979
Answered is a question asked by Daverman, Bull. Amer. Math. Soc. 84 (1978), 377-405. It is whether a 2-sphere Σ \Sigma is tame if each isotopy on Σ \Sigma extends to an isotopy of E 3 {E^3} ?
openaire   +2 more sources

Homogeneous Cotton solitons

open access: yes, 2013
Left-invariant Cotton solitons on homogeneous manifolds are determined. Moreover, algebraic Cotton solitons are studied providing examples of non-invariant Cotton solitons, both in the Riemannian and Lorentzian homogeneous ...
Calviño-Louzao, E.   +3 more
core   +1 more source

The homogeneous shifts

open access: yesJournal of Functional Analysis, 2003
In the paper under review, firstly, homogeneous operators are introduced. Then, homogeneous scalar weighted operators are characterized and classified completely. The authors show that all irreducible homogeneous operators are block shifts.
Gadadhar Misra, Bhaskar Bagchi
openaire   +2 more sources

Homogeneous $2$-shifts

open access: yes, 2018
The classification of homogeneous scalar weighted shifts is known. Recently, Kor\'{a}nyi obtained a large class of inequivalent irreducible homogeneous bi-lateral $2$-by-$2$ block shifts.
Hazra, Somnath
core   +1 more source

On the homogenization of means [PDF]

open access: yesActa Mathematica Hungarica, 2019
The aim of this paper is to introduce several notions of homogenization in various classes of weighted means, which include quasiarithmetic and semideviation means. In general, the homogenization is an operator which attaches a homogeneous mean to a given one.
Páles, Zsolt, Pasteczka, P.
openaire   +5 more sources

Synthesis and investigation of physico-chemical properties of dicationic ionic liquids [PDF]

open access: yesRoyal Society Open Science, 2018
A series of dicationic ionic liquids (ILs) including [C4(MIM)2][PF6]2, [C5(MIM)2][PF6]2, [C6(MIM)2][PF6]2 and [C4(PYR)2][PF6]2 were synthesized. Their thermal stability and melting points were analysed.
Yi-Xin Sun   +4 more
doaj   +1 more source

The unpredictably eruptive dynamics of spruce budworm populations in eastern Canada

open access: yesPopulation Ecology, EarlyView.
We examine historical population data for spruce budworm from several locations through the period 1930–1997, and use density‐dependent recruitment curves to test whether the pattern of population growth over time is more consistent with Royama's (1984; Ecological Monographs 54:429–462) linear R(t) model of harmonic oscillation at Green River New ...
Barry J. Cooke, Jacques Régnière
wiley   +1 more source

Supplementary Material to Antithyroid activity of some 6-(alkylsulfanyl)-9H-purines [PDF]

open access: yesJournal of the Serbian Chemical Society, 2011
n ...
ISMAT FATIMA   +5 more
doaj  

Effect of Torso Non-Homogeneities in the quasi-static inverse problems arising in electrocardiology

open access: yesMoroccan Journal of Pure and Applied Analysis, 2019
In the present paper, an homogeneous and non-homogeneous inverse problem constrained by the stationary problem in electrocardiology representing the heart, lungs surfaces, and torso model is investigated.
Ainseba BedrEddine   +2 more
doaj   +1 more source

A Strategy toward Realizing Ultrashort Channels and Microstructures Array by Piezoelectric Inkjet Printing

open access: yesNanomaterials, 2019
Inkjet printing has been proved to be a powerful tool in the cost-effective ambient deposition of functional materials for the fabrication of electronic devices in the past decades.
Jianqiu Chen   +9 more
doaj   +1 more source

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