Results 11 to 20 of about 3,311,038 (365)
Hamilton-Jacobi-Bellman equations with fast gradient-dependence [PDF]
Indiana University Mathematics Journal, 2000 The authors deal with the existence, uniqueness, and regularity properties for a class of Hamilton-Jacobi-Bellman equations, when the Hamiltonians are superlinear in the adjoint variable, but possibly not uniformly with respect to the state variable. Such a class of equations arises in nonlinear control problems with unbounded controls.
Franco Rampazzo, Caterina Sartori
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Material dependence of Casimir forces: gradient expansion beyond proximity [PDF]
Applied Physics Letters, 2011 A widely used method for estimating Casimir interactions [H. B. G. Casimir, Proc. K. Ned. Akad. Wet. 51, 793 (1948)] between gently curved material surfaces at short distances is the proximity force approximation (PFA).
Casimir H. B. G. +6 more
core +10 more sources
Singular quasilinear convective elliptic systems in ℝN
Advances in Nonlinear Analysis, 2022 The existence of a positive entire weak solution to a singular quasi-linear elliptic system with convection terms is established, chiefly through perturbation techniques, fixed point arguments, and a priori estimates.
Guarnotta Umberto +2 more
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The $p$-weak gradient depends on $p$ [PDF]
Proceedings of the American Mathematical Society, 2015 Given a>0, we construct a weighted Lebesgue measure on R^n for which the family of non constant curves has p-modulus zero for p\leq 1+a but the weight is a Muckenhoupt A_p weight for p>1+a. In particular, the p-weak gradient is trivial for small p but non trivial for large p. This answers an open question posed by several authors.
di Marino S., Speight G.
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Some recent results on singular p-Laplacian equations
Demonstratio Mathematica, 2022 A short account of some recent existence, multiplicity, and uniqueness results for singular p-Laplacian problems either in bounded domains or in the whole space is performed, with a special attention to the case of convective reactions.
Guarnotta Umberto +2 more
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Range dependent phase gradient autofocus [PDF]
IGARSS '98. Sensing and Managing the Environment. 1998 IEEE International Geoscience and Remote Sensing. Symposium Proceedings. (Cat. No.98CH36174), 1998 The Phase Gradient Autofocus (PGA) algorithm has been widely used in spotlight synthetic aperture radar (SAR) to remove motion-induced blurs in the images. The PGA algorithm has been proven to be a superior autofocus method. PGA assumes a narrow beam, which is valid for most SAR systems.
D.G. Thompson +4 more
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Calcium gradient dependence of Neurospora crassa hyphal growth.
Microbiology, 2003 A tip-high cytoplasmic calcium gradient has been identified as a requirement for hyphal growth in the fungusNeurospora crassa. The Ca2+gradient is less steep compared to wall vesicle, wall incorporation and vesicular Ca2+gradients, but this can be explained by Ca2+diffusion.
L. Silverman-Gavrila, R. Lew
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On a Singular Robin Problem with Convection Terms
Advanced Nonlinear Studies, 2020 In this paper, the existence of smooth positive solutions to a Robin boundary-value problem with non-homogeneous differential operator and reaction given by a nonlinear convection term plus a singular one is established.
Guarnotta Umberto +2 more
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NeuroImage, 2023 The dependence of the diffusion MRI signal on the diffusion time carries signatures of restricted diffusion and exchange. Here we seek to highlight these signatures in the human brain by performing experiments using free gradient waveforms designed to be
Arthur Chakwizira +5 more
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On convergence of gradient-dependent integrands [PDF]
Applications of Mathematics, 2007 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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