Results 11 to 20 of about 1,053,175 (373)

Fractional powers and singular perturbations of quantum differential Hamiltonians [PDF]

open access: yesJournal of Mathematics and Physics, 2018
We consider the fractional powers of singular (point-like) perturbations of the Laplacian, and the singular perturbations of fractional powers of the Laplacian, and we compare such two constructions focusing on their perturbative structure for resolvents
Michelangeli, Alessandro   +2 more
core   +2 more sources

Art of singular vectors and universal adversarial perturbations [PDF]

open access: yes2018 IEEE/CVF Conference on Computer Vision and Pattern Recognition, 2017
Vulnerability of Deep Neural Networks (DNNs) to adversarial attacks has been attracting a lot of attention in recent studies. It has been shown that for many state of the art DNNs performing image classification there exist universal adversarial ...
Khrulkov, Valentin, Oseledets, Ivan
core   +2 more sources

Singular perturbations and scaling [PDF]

open access: yesDiscrete & Continuous Dynamical Systems - B, 2018
Scaling transformations involving a small parameter ({\em degenerate scalings}) are frequently used for ordinary differential equations that model (bio-) chemical reaction networks.
Lax, Christian, Walcher, Sebastian
core   +2 more sources

Finite-Time Control of Markov Jump Lur'e Systems With Singular Perturbations [PDF]

open access: bronzeIEEE Transactions on Automatic Control, 2023
This article investigates the asynchronous controller design issue for Markov jump Lur'e systems with singular perturbations within a fixed time interval.
Jun Cheng, Ju H. Park, Zheng‐Guang Wu
openalex   +2 more sources

Perturbation determinants for singular perturbations

open access: yesRussian Journal of Mathematical Physics, 2014
For proper extensions of a densely defined closed symmetric operator with trace class resolvent difference the perturbation determinant is studied in the framework of boundary triplet approach to extension theory.
Malamud, Mark M., Neidhardt, Hagen
semanticscholar   +6 more sources

Multiple perturbations of a singular eigenvalue problem [PDF]

open access: yes, 2015
We study the perturbation by a critical term and a $(p-1)$-superlinear subcritical nonlinearity of a quasilinear elliptic equation containing a singular potential. By means of variational arguments and a version of the concentration-compactness principle
Cencelj, Matija   +2 more
core   +2 more sources

Saturating PI Control of Stable Nonlinear Systems Using Singular Perturbations [PDF]

open access: yesIEEE Transactions on Automatic Control, 2021
This article presents an antiwindup propor- tional-integral (PI) controller, using a saturating integrator, for a single-input and single-output (SISO) stable nonlinear plant, whose steady-state input–output map is increasing.
Pietro Lorenzetti, G. Weiss
semanticscholar   +1 more source

Singular perturbations in stochastic optimal control with unbounded data [PDF]

open access: yesE S A I M: Control, Optimisation and Calculus of Variations, 2022
. We study singular perturbations of a class of two-scale stochastic control systems with unbounded data. The assumptions are designed to cover some relaxation problems for deep neural networks.
M. Bardi, Hicham Kouhkouh
semanticscholar   +1 more source

Nonconvex Distributed Optimization via Lasalle and Singular Perturbations

open access: yesIEEE Control Systems Letters, 2023
In this letter we address nonconvex distributed consensus optimization, a popular framework for distributed big-data analytics and learning. We consider the Gradient Tracking algorithm and, by resorting to an elegant system theoretical analysis, we show ...
Guido Carnevale, G. Notarstefano
semanticscholar   +1 more source

Perturbation structure and evolution in tropical cyclones Noul and Nepartak based on singular vectors

open access: yesTellus: Series A, Dynamic Meteorology and Oceanography, 2020
This study examined tropical cyclones (TCs) Noul and Nepartak to demonstrate the evolutions of singular vector perturbations. Perturbations comprise eigen-solutions for dry total energy from two domains with different focuses, namely the TC itself and ...
John Chien-Han Tseng, Young-Sin Lai
doaj   +1 more source

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