Results 41 to 50 of about 8,767,642 (231)

New Stability Results for Periodic Solutions of Generalized Van der Pol Oscillator via Second Bogolyubov’s Theorem

Mathematics, 2023
A certain class of nonlinear differential equations representing a generalized Van der Pol oscillator is proposed in which we study the behavior of the existing solution.
Safia Meftah, Fares Yazid, Tefaha Lejdel Ali, Keltoum Bouhali, Abdelkader Moumen, Tariq Alraqad, Hicham Saber   +6 more
doaj   +1 more source

Cornerstones of Sampling of Operator Theory

, 2015
This paper reviews some results on the identifiability of classes of operators whose Kohn-Nirenberg symbols are band-limited (called band-limited operators), which we refer to as sampling of operators.
A. Papoulis, C. Shannon, C.W. Helstrom, D. Donoho, F. Krahmer, F. Krahmer, F. Krahmer, G. Turin, G.E. Pfander, G.E. Pfander, G.E. Pfander, G.E. Pfander, G.E. Pfander, G.E. Pfander, G.E. Pfander, G.E. Pfander, G.E. Pfander, G.E. Pfander, G.E. Pfander, G.L. Hardy, H.G. Feichtinger, H.J. Landau, H.J. Landau, H.K. Markey, J. Chiu, J. Lawrence, K. Gröchenig, K. Seip, K. Seip, L. Applebaum, L.A. Zadeh, N. Wiener, P. Stevenhagen, P. Zheltov, P. Zheltov, P.A. Bello, P.E. Green, R. Heckel, R. Price, R. Price, R. Price, R. Price, R.-D. Malikiosis, R.A. Scholtz, R.I. Pickholtz, T. Kailath, T. Kailath, T. Kailath, W. Kozek, W. Ward, W.U. Bajwa, Y.I. Lyubarskii, Y.M. Hong   +52 more
core   +1 more source

Spectral and scattering theory for perturbations of the Carleman operator [PDF]

, 2012
We study spectral properties of the Carleman operator (the Hankel operator with kernel $h_{0}(t)=t^{-1}$) and, in particular, find an explicit formula for its resolvent. Then we consider perturbations of the Carleman operator $H_{0}$ by Hankel operators $
Yafaev, D. R.
core   +2 more sources

Some Seminormed Difference Sequence Spaces over n-Normed Spaces Defined by a Musielak-Orlicz Function of Order (α,β)

Journal of Function Spaces, 2018
We first define the notion of lacunary statistical convergence of order (α,β), and taking this notion into consideration, we introduce some seminormed difference sequence spaces over n-normed spaces with the help of Musielak-Orlicz function M=(Mk) of ...
S. A. Mohiuddine, Sunil K. Sharma, Dina A. Abuzaid   +2 more
doaj   +1 more source

Some Generalized Difference Sequence Spaces Defined by a Sequence of Moduli in n-Normed Spaces

Journal of Function Spaces, 2015
We introduce some new generalized difference sequence spaces by means of ideal convergence, infinite matrix, and a sequence of modulus functions over n-normed spaces.
Abdullah Alotaibi, Kuldip Raj, S. A. Mohiuddine   +2 more
doaj   +1 more source

Generalized Weighted Statistical Convergence for Double Sequences of Fuzzy Numbers and Associated Korovkin-Type Approximation Theorem

Journal of Function Spaces, 2020
We define the notions of weighted λ,μ-statistical convergence of order γ1,γ2 and strongly weighted λ,μ-summability of γ1,γ2 for fuzzy double sequences, where ...
Abdullah Alotaibi
doaj   +1 more source

Operator-Based Nonlinear Control for a Miniature Flexible Actuator Using the Funnel Control Method

Machines, 2021
Recently, the studies of soft actuators have been getting increased attention among various fields. Soft actuators are very safe for fragile objects and have an affinity to humans because they are composed of flexible materials.
Keisuke Ueno, Shuhei Kawamura, Mingcong Deng   +2 more
doaj   +1 more source

Experimental Study on Support Vector Machine-Based Early Detection for Sensor Faults and Operator-Based Robust Fault Tolerant Control

Machines, 2022
Considering sensor faults for a thermoelectric cooler actuated by Peltier devices, this work proposes an operator-based robust nonlinear fault tolerant controller (FTC) integrated with early fault detection using a support vector machine (SVM).
Mingcong Deng, Yuki Tanaka, Ximei Li
doaj   +1 more source

Schur and operator multipliers

, 2009
Schur multipliers were introduced by Schur in the early 20th century and have since then found a considerable number of applications in Analysis and enjoyed an intensive development.
Todorov, I. G., Turowska, L.
core   +1 more source

Variational analysis of a frictional contact problem with wear and damage

Mathematical Modelling and Analysis, 2021
We study a quasistatic problem describing the contact with friction and wear between a piezoelectric body and a moving foundation. The material is modeled by an electro-viscoelastic constitutive law with long memory and damage.
Mohammed Salah Mesai Aoun, Mohamed Selmani, Abdelaziz Azeb Ahmed   +2 more
doaj   +1 more source