ORCID "0000-0002-5102-1384" Makaleler için listeleme
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E-core of double sequences
Sever, Yurdal; Talo, Özer (2014)Boos, Leiger and Zeller [1,2] defined the concept of e-convergence. In this paper we introduce the concepts of e-limit superior and inferior for real double sequences and prove some fundamental properties of e-limit ... -
On Kuratowski i-convergence of sequences of closed sets
Talo, Özer; Sever, Yurdal (JSTOR, 2017)In this paper we extend the concepts of statistical inner and outer limits (as introduced by Talo, Sever and Bas¸ar) to I− inner and I− outer limits and give some I− analogue of properties of statistical inner and outer ... -
On regular ces`aro double sequence spaces
Sever, Yurdal (2012)In this study, we define the double sequence space Ces_r and examine some properties of this sequence space. Furthermore, we determine the β(r)-dual of the space Ces_r . -
On some classes of four dimensional regular matrices
Sever, Yurdal; Altay, Bilal (2016)In 1981, Rath and Tripathy presented some classes of regular matrices such that every bounded sequence is limitable by some member of each class of ordinary conservative matrices using ordinary sequences. The goal of ... -
On some double cesàro sequence spaces
Sever, Yurdal; Altay, Bilal (JSTOR, 2014)In this study, we define the double Ces`aro sequence spaces Ces_p , Ces_bp and C es bp_0 and examine some properties of those sequence spaces. Furthermore, we determine the β(bp)-duals of the spaces Ces_ bp and Ces_p . -
On statistical convergence of double sequences of closed sets
Sever, Yurdal; Talo, Özer (JSTOR, 2016)In this paper, we introduce the concepts of statistical inner and statistical outer limits for double sequences of closed sets and give some formulas for finding these limits. Also, we give the Kuratowski statistical ... -
On statistically convergent sequences of closed sets
Talo, Özer; Sever, Yurdal; Başar, Feyzi (JSTOR, 2016)In this paper, we give the definitions of statistical inner and outer limits for sequences of closed sets in metric spaces. We investigate some properties of statistical inner and outer limits. For sequences of closed ... -
Regularly ideal convergence and regularly ideal cauchy double sequences in 2-normed spaces
Sever, Yurdal; Dündar, Erdinç (JSTOR, 2015)In this paper, we introduce the notions of ( I_2, I), ( I^∗2 ,I^∗)-convergence and ( I_2, I), ( I^∗2, I^∗) Cauchy double sequence in regular sense in 2-normed spaces. Also, we study some properties of these concepts. -
The space Lq of double sequences
Başar, Feyzi; Sever, Yurdal (Department of Mathematics, Faculty of Science, Okayama University, 2009-01)The spaces BS, BS(t), CSp, CSbp, CSr and BV of double sequences have recently been studied by Altay and Başar [J. Math. Anal. Appl. 309(1)(2005), 70–90]. In this work, following Altay and Başar [1], we introduce the ...