Results 51 to 60 of about 1,203,844 (201)
Modern Stochastics: Theory and Applications, 2015 We construct an estimator of the unknown drift parameter $\theta \in \mathbb{R}$ in the linear model \[X_{t}=\theta t+\sigma _{1}{B}^{H_{1}}(t)+\sigma _{2}{B}^{H_{2}}(t),\hspace{0.2778em}t\in [0,T],\] where ${B}^{H_{1}}$ and ${B}^{H_{2}}$ are two ...
Yuliya Mishura, Ivan Voronov
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Operator valued Dirichlet problem in the plane [PDF]
, 2012 We consider an operator valued Dirichlet problem for harmonic mappings and prove the existence of a Perron-like solution. To formulate the Perron’s construction we make use of Olson’s notion of spectral order.
Göğüş, Nihat Gökhan
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On weakly compact operators onC *-algebras
Mathematische Annalen, 1986 Principal theorem: Let X be a Banach space, \(X_{\infty}\) the space of bounded functions on the ball of the dual of X; let \(J_ X:X\to X\) be the canonical embedding: let A be a \(C^*\)-algebra and \(\Gamma_ 2(A,X_{\infty})\) the set of operators from A to \(X_{\infty}\) that factor through a Hilbert space.
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Krasnoselskii's theorem in generalized Banach spaces and application
Electronic Journal of Qualitative Theory of Differential Equations, 2012 The purpose of this paper is to extend Krasnoselskii's fixed point theorem to the case of generalized Banach spaces for singlevalued and multivalued operators.
I. R. Petre, Adrian Petrusel
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On the class of order almost L-weakly compact operators
, 2022 summary:We introduce a new class of operators that generalizes L-weakly compact operators, which we call order almost L-weakly compact. We give some characterizations of this class and we show that this class of operators satisfies the domination ...
El Fahri, Kamal +2 more
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On density and dentability in Hilbert spaces
Scientific AfricanThis paper establishes necessary and sufficient conditions for density and dentability in infinite-dimensional complex Hilbert spaces, demonstrating their fundamental connections to operator theory and optimization through a synthesis of spectral ...
Joseph Owuor Owino, Benard Okelo
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On L-, M-Weakly Compact and Rank-One Operators
, 2013 The finite rank, L-and M-weakly compact operators are studied. The inclusion of these classes with one another and with the weak Dunford-Pettis, almost Dunford-Pettis and b-weakly compact operators as well as the effect of these inclusions to the order ...
Alpay, Safak
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Fractal and FractionalThree-dimensional Riemann–Liouville time-fractional integro-differential equations provide useful prototype models for diffusion and transport processes with temporal memory and weakly singular hereditary effects.
Quan Tang, Ziyang Luo, Shuo Wang
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Some estimates for elliptic systems generalizing the Bitsadze system of equations
Учёные записки Казанского университета: Серия Физико-математические наукиThis article explores an elliptic system of n equations where the main part is the Bitsadze operator (the square of the Cauchy–Riemann operator) and the lower term is the product of a given matrix function by the conjugate of the desired vector function.
S. Baizaev, R. N. Barotov
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