a b s t r a c tIn this paper we make a new approach to the notions of [V , λ]-summability and λ-statistical convergence by using ideals and introduce new notions, namely, I − [V , λ]-summability and I − λ-statistical convergence. We mainly examine the relation between these two new methods as also the relation between I − λ-statistical convergence and I-statistical convergence introduced by the authors recently. We carry out the whole investigation in normed linear spaces.
ABSTRACT. The idea of I-convergence was introduced by Kostyrko et al (2001) and also independently by Nuray and Ruckle (2000) (who called it generalized statistical convergence) as a generalization of statistical convergence (Fast (1951), Schoenberg(1959)). For the last few years, study of these convergences of sequences has become one of the most active areas of research in classical Analysis. In 2003 Muresaleen and Edely introduced the concept of statistical convergence of double sequences. In this paper we consider the notions of I and I * -convergence of double sequences in real line as well as in general metric spaces. We primarily study the inter-relationship between these two types of convergence and then investigate the category and porosity position of bounded I and I * -convergent double sequences.
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