Results 81 to 90 of about 31,156 (211)
Existence and multiplicity of solutions for sublinear ordinary differential equations at resonance
Electronic Journal of Differential Equations, 2015 Using a $Z_2$ type index theorem, we show the existence and multiplicity of solutions for the sublinear ordinary differential equation $$ \mathcal{L} u(t)=\mu u(t)+W_u(t,u(t)),\quad 0\leq t\leq L $$ with suitable periodic or boundary conditions ...
Chengyue Li, Fenfen Chen
doaj
A Novel Peak‐Shape Aware Approach for Mass Alignment in Mass Spectrometry
Rapid Communications in Mass Spectrometry, Volume 40, Issue 4, 28 February 2026.ABSTRACT Rationale In mass spectrometry measurements, mass shifts may be inadvertently introduced due to instrumental drift and calibration inaccuracies, potentially compromising the accuracy of subsequent data analysis. This work presents a novel, label‐free algorithm to improve relative mass alignment between mass spectra.
Thomas Vanhemel +5 more
wiley +1 more source
Periodic Solutions of Functional-Differential Systems with Sublinear Nonlinearities
Journal of Mathematical Analysis and Applications, 1984 The authors present a theorem on the existence of T-periodic solutions for the second order vector functional-differential equation \(x''+(d/dt)(\text{grad} F(x))+g(t,Hx,Kx')=e(t)\) where H and K map continuously the space of continuous T-periodic maps \({\mathbb{R}}\to {\mathbb{R}}^ n\) into itself.
Invernizzi, Sergio, Zanolin, Fabio
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Minimal Lp-solutions to singular sublinear elliptic problems
Results in Applied MathematicsWe solve the existence problem for the minimal positive solutions u∈Lp(Ω,dx) to the Dirichlet problems for sublinear elliptic equations of the form Lu=σuq+μinΩ,lim infx→yu(x)=0y∈∂∞Ω,where ...
Aye Chan May, Adisak Seesanea
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Nonlinear eigenvalue problems for higher order Lidstone boundary value problems
Electronic Journal of Qualitative Theory of Differential Equations, 2000 In this paper, we consider the Lidstone boundary value problem $y^{(2m)}(t) = \lambda a(t)f(y(t), \dots, y^{(2j)}(t), \dots y^{(2(m-1))}(t), 0 < t < 1, y^{(2i)}(0) = 0 = y^{(2i)}(1), i = 0, ..., m - 1$, where $(-1)^m f > 0$ and $a$ is nonnegative. Growth
Paul Eloe
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Hartman-Wintner growth results for sublinear functional differential equations
Electronic Journal of Differential Equations, 2016 39 ...
John A. D. Appleby, Denis D. Patterson
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Geophysical Research Letters, Volume 53, Issue 3, 16 February 2026.Abstract Earthquake stress drops are inferred to be independent of source depth, contradicting linear scaling predictions for earthquakes as frictional stick‐slip instabilities that assume increasing fault normal stress due to overburden. Here, we examine the scaling between averaged stress drops and increasing normal stress for simulated earthquake ...
Minghan Yang +2 more
wiley +1 more source
Boundary Value Problems, 2010 We study the positive solutions to boundary value problems of the form -Δu=λf(u); Ω, α(x,u)(∂u/∂η)+[1-α(x,u)]u=0; ∂Ω, where Ω is a bounded domain in ℝn with n≥1, Δ ...
Jerome Goddard +2 more
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The Sandwich Theorem for Sublinear and Superlinear Functionals
, 2016 The Hahn-Banach theorem is an extension theorem for linear functionals which preserves certain properties. Specifically, if a linear functional is defined on a subspace of a real vector space which is dominated by a sublinear functional on the entire space, then this functional can be extended to a linear functional on the entire space which is still ...
Diab, A. T. +2 more
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A parametrically‐Conditioned Deep Learning Surrogate for Coherent Spinodal Decomposition
Advanced Theory and Simulations, Volume 9, Issue 2, February 2026.Spinodal decomposition of strained alloys with cubic anisotropy is reproduced by a Convolutional Recurrent Neural Network, taking the misfit parameter as explicit input to return different morphologies. The predicted composition fields match phase‐field simulations over a broad range of parameters, allowing to reconstruct the full phase diagram.
Andrea Fantasia +5 more
wiley +1 more source