Results 181 to 190 of about 2,451 (228)

Multipliers on bi-parameter Haar system Hardy spaces. [PDF]

open access: yesMath Ann
Lechner R   +3 more
europepmc   +1 more source

Exploring α-ψ-ϕ contractive mapping: novel fixed point theorems in complete b-metric spaces. [PDF]

open access: yesF1000Res
Raji T   +6 more
europepmc   +1 more source

On Subsequential Averages of Sequences in Banach Spaces

Real Analysis Exchange, 2023
This paper gives a strong contribution to the solution to the conjecture described next. Conjecture 1. Let \(\mathcal{X}\) be a Banach space, and suppose that \(x=\{x_n\}_{n=0}^{\infty}\subseteq\mathcal{X}\). Then the set \[\overline{x}^c=\left\{y\in\mathcal{X}: \exists \text{ a strictly increasing sequence } \{k_n\}\text{ s.t.
openaire   +1 more source

On the Boundedness of a Recurrence Sequence in a Banach Space

Ukrainian Mathematical Journal, 2003
The authors consider the recurrence sequence \[ x_n=\sum\limits_{k=1}^\infty A_kx_{n-k}+y_n,\quad n\geq 1, \] \[ x_n=\alpha_n,\quad n\leq 0, \] in a Banach space \(B\), where the sequences \(\{ y_n\}\) and \(\{ \alpha_n\}\) are bounded, \(A_k\) are bounded linear operators, and \(\sum\limits_{k=1}^\infty k^{1+\epsilon}\| A_k\| 0\). It is shown that the
Gomilko, A. M.   +2 more
openaire   +1 more source

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