Results 41 to 50 of about 214,384,274 (154)
Some properties of Palais-Smale sequences with applications to elliptic boundary-value problems
Electronic Journal of Differential Equations, 1999 When using calculus of variations to study nonlinear elliptic boundary-value problems on unbounded domains, the Palais-Smale condition is not always satisfied.
Chao-Nien Chen, Shyuh-Yaur Tzeng
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On the planar supercritical Kirchhoff problem
Bulletin of Mathematical SciencesIn this paper, we investigate the planar Kirchhoff problem with supercritical nonlinearity [Formula: see text], which behaviors as [Formula: see text] and [Formula: see text] with [Formula: see text], [Formula: see text].
Limin Zhang, Jiuyang Wei
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Statistics in Medicine, Volume 45, Issue 23-24, October 2026.ABSTRACT Large observational datasets, including those derived from electronic health records, are a valuable resource for medical research but are often affected by missingness, measurement error, and misclassification. Two‐phase sampling with generalized raking (GR) estimation is an efficient and robust approach to statistical inference in such ...
Jasper B. Yang +3 more
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Existence of nontrivial solutions for quasi-linear resonant problems
, 2007 Combining the minimax arguments and the Morse Theory, by computing the critical groups at zero, we establish the existence of a nontrivial solution for a class of Dirichlet boundary value problems, with resonance at infinity and ...
Abdel Rachid El AMROUSS +1 more
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Advanced Engineering ResearchIntroduction. Problems and methods of finding Н∞ – control are the basis of modern control theory. They are actively used to develop robust controllers, especially in aircraft control systems under limited external actions.
A. V. Panteleev, A. A. Yakovleva
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Earth and Space Science, Volume 13, Issue 10, October 2026.Abstract High‐resolution precipitation fields are essential for characterizing climate extremes, assessing sectoral impacts, and improving early warning systems. However, the resolution of global Earth system models (ESMs) and numerical weather prediction (NWP) systems remains limited by computational constraints.
Midhun Murukesh, Pankaj Kumar
wiley +1 more source
An Interior-Point algorithm for Nonlinear Minimax Problems [PDF]
We present a primal-dual interior-point method for constrained nonlinear, discrete minimax problems where the objective functions and constraints are not necessarily convex.
E. Obasanjo, G. Tzallas-Regas, B. Rustem
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Existence and stability of multiple spot solutions for the gray-scott model in R^2 [PDF]
, 2005 We study the Gray-Scott model in a bounded two dimensional domain and establish the existence and stability of {\bf symmetric} and {\bf asymmetric} multiple spotty patterns. The Green's function and its derivatives together with two nonlocal eigenvalue
Winter, M +3 more
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Minimax Control of Constrained Parabolic Systems [PDF]
, 1995 In this paper we formulate and study a minimax control problem for a class of parabolic systems with controlled Dirichlet boundary conditions and uncertain distributed perturbations under pointwise control and state constraints.
Mordukhovich, B.S., Zhang, K.
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Minimax principles for critical-point theory in applications to quasilinear boundary-value problems
Electronic Journal of Differential Equations, 2000 Using the variational method developed by the same author in [7], we establish the existence of solutions to the equation $-Delta_p u = f(x,u)$ with Dirichlet boundary conditions.
A. R. El Amrouss, M. Moussaoui
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