Geodesic
On $A^{\mathcal{I^{K}}}$–summability
Ural mathematical journal, Tome 8 (2022) no. 1, pp. 13-22 Cet article a éte moissonné depuis la source Math-Net.Ru

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In this paper, we introduce and investigate the concept of $A^{\mathcal{I^{K}}}$-summability as an extension of $A^{\mathcal{I^{*}}}$-summability which was recently (2021) introduced by O.H.H. Edely, where $A=(a_{nk})_{n,k=1}^{\infty}$ is a non-negative regular matrix and $\mathcal{I}$ and $\mathcal{K}$ represent two non-trivial admissible ideals in $\mathbb{N}$. We study some of its fundamental properties as well as a few inclusion relationships with some other known summability methods. We prove that $A^{\mathcal{K}}$-summability always implies $A^{\mathcal{I^{K}}}$-summability whereas $A^{\mathcal{I}}$-summability not necessarily implies $A^{\mathcal{I^{K}}}$-summability. Finally, we give a condition namely $AP(\mathcal{I},\mathcal{K})$ (which is a natural generalization of the condition $AP$) under which $A^{\mathcal{I}}$-summability implies $A^{\mathcal{I^{K}}}$-summability.
Keywords: ideal, filter, $\mathcal{I}$-convergence, $\mathcal{I^{K}}$-convergence, $A^{\mathcal{I}}$-summa-bility, $A^{\mathcal{I^{K}}}$-summability. 
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Chiranjib Choudhury; Shyamal Debnath. On $A^{\mathcal{I^{K}}}$–summability. Ural mathematical journal, Tome 8 (2022) no. 1, pp. 13-22. http://geodesic.mathdoc.fr/item/UMJ_2022_8_1_a1/

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