Results 181 to 190 of about 8,417 (227)

Room-temperature cavity exciton-polariton condensation in perovskite quantum dots. [PDF]

Nat Commun
Georgakilas I, Tiede D, Urbonas D, Mirek R, Bujalance C, Caliò L, Oddi V, Tao R, Dirin DN, Rainò G, Boehme SC, Galisteo-López JF, Mahrt RF, Kovalenko MV, Miguez H, Stöferle T.   +15 more
europepmc   +1 more source

On the Ambrosetti-Rabinowitz Superlinear Condition

Advanced Nonlinear Studies, 2004
Abstract We present various results on multiple solutions for superlinear elliptic equations in a bounded domain or in the whole space. With a Nehari type condition assumed, we show that the standard Ambrosetti-Rabinowitz superlinear condition can be replaced by a more natural super-quadratic condition.
Zhaoli Liu, Zhi-Qiang Wang
exaly   +2 more sources

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Superlinear Convergence of Conjugate Gradients

SIAM Journal on Numerical Analysis, 2001
The main goal of this paper is to illustrate that some recent results obtained in the logarithmic potential theory can be used for better understanding the phenomenon in the numerical analysis known as superlinear convergence. The authors give a theoretical explanation for superlinear convergence behaviour observed while solving large systems of linear
Bernhard Beckermann, Arno B. J. Kuijlaars   +1 more
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On superlinear speedups

Parallel Computing, 1991
\textit{R. Janssen} [Parallel Comput. 4, 211-213 (1987; Zbl 0641.68070)] proposed an algorithm for which the use of \(n\) processors can reduce computer time by more than a factor of \(n\). It is shown that in the example that Janssen offered the superlinear speedup was possible only due to inefficient programming of the algorithm on a single processor.
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Superlinear Dirichlet problems

Nonlinear Analysis: Theory, Methods & Applications, 2004
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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A note on superlinear speedup

Parallel Computing, 1987
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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RESONANCE THEOREMS and SUPERLINEAR OPERATORS

Russian Mathematical Surveys, 1970
This article is concerned with problems of the metrical theory of functions. We establish criteria for systems of measurable functions to be systems of convergence in measure, systems of convergence almost everywhere, etc. The exposition is based on a unified method, using superlinear operators.
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New Observations on Superlinear Luminescence*,†

Journal of the Optical Society of America, 1949
In earlier papers it was shown that a group of phosphors show an approximately linear increase of their efficiency with increasing intensity of excitation in certain ranges of that intensity. Tentatively, these observations and the interdependence of the effects of intensity, temperature, and “poisoning” found in the same phosphors were interpreted by ...
N R, NAIL, F, URBACH, D, PEARLMAN
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Superlinear Photoconductivity

physica status solidi (b), 1969
AbstractUsing the method described in the preceding paper [1] general conditions are derived for the case that a photocurrent increases stronger than linear with the excitation strength G. If this so‐called superlinear photoconductivity is caused by a superlinear dependence of the majority carrier concentration on G, the necessary and sufficient ...
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A Note on the Superlinear Convergence of GMRES

SIAM Journal on Numerical Analysis, 1997
In this short paper it is shown how the rate of convergence of the generalized minimal residual (GMRES) method for solving a linear operator equation \((\lambda I + K) u = f\) in a Hilbert space is related to the degree of compactness of \(K\) measured by the products of its singular value.
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