Results 11 to 20 of about 126 (60)
Exterior products of operators and superoptimal analytic approximation
Transactions of the London Mathematical Society, Volume 8, Issue 1, Page 299-412, December 2021., 2021 Abstract We give a new algorithm for the construction of the unique superoptimal analytic approximant of a given continuous matrix‐valued function on the unit circle, using exterior powers of operators in preference to spectral or Wiener–Masani factorizations.
Dimitrios Chiotis +2 more
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Journal of Advances in Modeling Earth Systems, Volume 13, Issue 4, April 2021., 2021 Abstract Stochastic representation of the influence of the subgrid‐scales on the resolved scales in weather and climate models has been shown to improve ensemble spread and resolved variability. We propose a statistical scale‐aware space‐time model to characterize the contribution of mesoscale wind variability to air‐sea exchanges. In an earlier study,
Julie Bessac +4 more
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WEB‐Spline Finite Elements for the Approximation of Navier‐Lamé System with CA,B Boundary Condition
Abstract and Applied Analysis, Volume 2020, Issue 1, 2020., 2020 The objective of this article is to discuss the existence and the uniqueness of a weighted extended B‐spline‐ (WEB‐spline‐) based discrete solution for the 2D Navier‐Lamé equation of linear elasticity with a different type of mixed boundary condition called CA,B boundary condition.
Ouadie Koubaiti +3 more
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Transactions of the London Mathematical Society, Volume 5, Issue 1, Page 132-183, December 2018., 2018 Abstract The richly developed theory of complex manifolds plays important roles in our understanding of holomorphic functions in several complex variables. It is natural to consider manifolds that will play similar roles in the theory of holomorphic functions in several non‐commuting variables.
Jim Agler, John E. McCarthy, N. J. Young
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Journal of Mathematics, Volume 2018, Issue 1, 2018., 2018 This paper is focused on the modified Ishikawa iterative scheme by admitting that the parameterizing sequences might be vectors of distinct components. It is also assumed that the auxiliary self‐mapping which supports the iterative scheme is asymptotically demicontractive.
M. De la Sen, Oluwatosin T. Mewomoo
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A Novel Dissipativity‐Based Control for Inexact Nonlinearity Cancellation Problems
Mathematical Problems in Engineering, Volume 2015, Issue 1, 2015., 2015 When dealing with linear systems feedback interconnected with memoryless nonlinearities, a natural control strategy is making the overall dynamics linear at first and then designing a linear controller for the remaining linear dynamics. By canceling the original nonlinearity via a first feedback loop, global linearization can be achieved. However, when
Giacomo Innocenti +2 more
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On a Class of Abstract Time‐Fractional Equations on Locally Convex Spaces
Abstract and Applied Analysis, Volume 2012, Issue 1, 2012., 2012 This paper is devoted to the study of abstract time‐fractional equations of the following form: Dtαnu(t)+∑i=1n−1AiDtαiu(t)=ADtαu(t)+f(t), t > 0, u(k)(0) = uk, k = 0, …, ⌈αn⌉ − 1, where n ∈ ℕ∖{1}, A and A1, …, An−1 are closed linear operators on a sequentially complete locally convex space E, 0 ≤ α1 < ⋯ < αn, 0 ≤ α < αn, f(t) is an E‐valued function ...
Marko Kostić +3 more
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Journal of Function Spaces, Volume 2012, Issue 1, 2012., 2012 We introduce the Besov‐Schatten spaces Bp(ℓ2), a matrix version af analytic Besov space, and we compute the dual of this space showing that it coincides with the matricial Bloch space introduced previously in Popa (2007). Finally we compute the space of all Schur multipliers on B1(ℓ2).
A. N. Marcoci +3 more
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On a Family of High‐Order Iterative Methods under Kantorovich Conditions and Some Applications
Abstract and Applied Analysis, Volume 2012, Issue 1, 2012., 2012 This paper is devoted to the study of a class of high‐order iterative methods for nonlinear equations on Banach spaces. An analysis of the convergence under Kantorovich‐type conditions is proposed. Some numerical experiments, where the analyzed methods present better behavior than some classical schemes, are presented.
S. Amat +5 more
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Order Structure of the Figà‐Talamanca‐Herz Algebra
International Scholarly Research Notices, Volume 2011, Issue 1, 2011., 2011 We study the interplay between the order structure and the p‐operator space structure of Figà‐Talamanca‐Herz algebra Ap(G) of a locally compact group G. We show that for amenable groups, an order and algebra isomorphism of Figà‐Talamanca‐Herz‐algebras yields an isomorphism or anti‐isomorphism of the underlying groups.
Marzieh Shams Yousefi +4 more
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