Results 11 to 20 of about 61 (59)

Numerical studies of viscous incompressible flow between two rotating concentric spheres

open access: yesJournal of Applied Mathematics, Volume 2004, Issue 2, Page 91-106, 2004., 2004
The problem of determining the induced steady axially symmetric motion of an incompressible viscous fluid confined between two concentric spheres, with the outer sphere rotating with constant angular velocity and the inner sphere fixed, is numerically investigated for large Reynolds number.
E. O. Ifidon
wiley   +1 more source

Determinants of two kinds of matrices whose elements involve sine functions

open access: yesOpen Mathematics, 2019
The presented paper is strictly connected, among others, with the paper On the sum of some alternating series, Comp. Math. Appl. (2011), written by Wituła and Słota.
Różański Michał
doaj   +1 more source

Topological duals of some paranormed sequence spaces

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 2003, Issue 30, Page 1883-1897, 2003., 2003
Let P = (pk) be a bounded positive sequence and let A = (ank) be an infinite matrix with all ank ≥ 0. For normed spaces E and Ek, the matrix A generates the paranormed sequence spaces [A, P] ∞((Ek)), [A, P] 0((Ek)), and [A, P]((E)), which generalise almost all the well‐known sequence spaces such as c0, c, lp, l∞, and wp.
Nandita Rath
wiley   +1 more source

A Mean Ergodic Theorem for Affine Nonexpansive Mappings in Nonpositive Curvature Metric Spaces

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2021
In this paper, we consider the orbits of an affine nonexpansive mapping in Hadamard (nonpositive curvature metric) spaces and prove an ergodic theorem for the inductive mean, which extends the von Neumann linear ergodic theorem.
Khatibzadeh Hadi, Pouladi Hadi
doaj   +1 more source

Some sequence spaces and statistical convergence

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 29, Issue 5, Page 303-306, 2002., 2002
We introduce the strongly (V, λ)‐convergent sequences and give the relation between strongly (V, λ)‐convergence and strongly (V, λ)‐convergence with respect to a modulus.
E. Savaş
wiley   +1 more source

Exponential inequalities for a class of operators

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 31, Issue 5, Page 283-290, 2002., 2002
Characterizations of weight pairs are proved for which weighted exponential‐logarithmic integral inequalities are satisfied. The results given contain characterizations of weights for which inequalities involving the Riemann‐Liouville and Laplace type operators hold.
Hans P. Heinig
wiley   +1 more source

Vector‐valued sequence spaces generated by infinite matrices

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 26, Issue 9, Page 547-560, 2001., 2001
Let A = (ank) be an infinite matrix with all ank ≥ 0 and P a bounded, positive real sequence. For normed spaces E and Ek the matrix A generates paranormed sequence spaces such as [A,P]∞((Ek)), [A,P]0((Ek)), and [A, P](E) which generalize almost all the existing sequence spaces, such as l∞, c0, c, lp, wp, and several others.
Nandita Rath
wiley   +1 more source

Ishikawa iteration process with errors for nonexpansive mappings

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 27, Issue 7, Page 413-417, 2001., 2001
We study the construction and the convergence of the Ishikawa iterative process with errors for nonexpansive mappings in uniformly convex Banach spaces. Some recent corresponding results are generalized.
Jialin Huang
wiley   +1 more source

Some properties of Banach‐valued sequence spaces ℓp[X]

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 27, Issue 5, Page 289-300, 2001., 2001
We discuss some properties of the Banach‐valued sequence space ℓp[X](1 ≤ p < ∞), the space of weakly p‐summable sequences on a Banach space X. For example, we characterize the reflexivity of ℓp[X], convergent sequences on ℓp[X], and compact subsets of ℓp[X].
Qingying Bu
wiley   +1 more source

Tauberian theorems for statistically (C,1,1) summable double sequences of fuzzy numbers

open access: yesOpen Mathematics, 2017
In this paper, we prove that a bounded double sequence of fuzzy numbers which is statistically convergent is also statistically (C, 1, 1) summable to the same number. We construct an example that the converse of this statement is not true in general.
Önder Zerrin   +2 more
doaj   +1 more source

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