Results 1 to 10 of about 281,793 (289)
Convergence of Special Sequences of Semi-Exponential Operators
Mathematics, 2022 Several papers, mainly written by J. de la Call and co-authors, contain modifications of classical sequences of positive linear operators to obtain new sequences converging to limits which are not necessarily the identity operator.
Ana Maria Acu +3 more
doaj +3 more sources
Exponential Operators, Dobinski Relations and Summability [PDF]
Journal of Physics: Conference Series, 2005 We investigate properties of exponential operators preserving the particle number using combinatorial methods developed in order to solve the boson normal ordering problem.
A Gawron +10 more
core +4 more sources
The impact of the exponential Kernel’s bandwidth parameter on learning algorithms [PDF]
Scientific ReportsExponential kernels have been used considerably in statistics, machine learning, and artificial intelligence for tasks such as kernel principal component analysis (Kernel PCA), support vector machines(SVM), visualization, clustering, and pattern ...
Mahdi A. Almahdawi
doaj +2 more sources
Non-Abelian W-representation for GKM
Physics Letters B, 2021 W-representation is a miraculous possibility to define a non-perturbative (exact) partition function as an exponential action of somehow integrated Ward identities on unity.
A. Mironov, V. Mishnyakov, A. Morozov
doaj +1 more source
Gamma operators reproducing exponential functions
Advances in Difference Equations, 2020 The present paper deals with reconstruction of Gamma operators preserving some exponential functions and studies their approximation properties: uniform convergence, rate of convergence, asymptotic formula and saturation.
Tuncer Acar +2 more
doaj +1 more source
Scientific Reports, 2023 The population growth and urbanization has caused an exponential increase in waste material. The proper disposal of waste is a challenging problem nowadays. The proper disposal site selection with typical sets and operators may not yield fruitful results.
Ateeq Ur Rehman +4 more
doaj +1 more source
Spectral projections and resolvent bounds for partially elliptic quadratic differential operators [PDF]
, 2012 We study resolvents and spectral projections for quadratic differential operators under an assumption of partial ellipticity. We establish exponential-type resolvent bounds for these operators, including Kramers-Fokker-Planck operators with quadratic ...
B Helffer +8 more
core +1 more source
The spaces of exponential type vectors of complex degrees of positive operators
Karpatsʹkì Matematičnì Publìkacìï, 2013 New classes of interpolation spaces of exponential type vectors of complex degrees of positive operators are defined. Properties of the approximation spaces generated by the considered interpolation spaces are investigated.
M. I. Dmytryshyn
doaj +1 more source
Exponential decay estimates for Singular Integral operators [PDF]
, 2013 The following subexponential estimate for commutators is proved |[|\{x\in Q: |[b,T]f(x)|>tM^2f(x)\}|\leq c\,e^{-\sqrt{\alpha\, t\|b\|_{BMO}}}\, |Q|, \qquad t>0.\] where $c$ and $\alpha$ are absolute constants, $T$ is a Calder\'on--Zygmund operator, $M ...
Ortiz-Caraballo, Carmen +2 more
core +2 more sources
Generalized Exponential Trichotomies for Abstract Evolution Operators on the Real Line
Journal of Function Spaces and Applications, 2013 This paper considers two trichotomy concepts in the context of abstract evolution operators. The first one extends the notion of exponential trichotomy in the sense of Elaydi-Hajek for differential equations to abstract evolution operators, and it is a ...
Nicolae Lupa, Mihail Megan
doaj +1 more source