Browsing by Author "Çakallı, Hüseyin"
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Abel statistical convergence in metric spaces
Çakallı, Hüseyin (Maltepe Üniversitesi, 2019)In this study, we investigate the concepts of Abel statistical convergence and Abel statistical quasi Cauchy sequences. A function f from a subset E of a metric space X into X is called Abel statistically ward continuous it ... 
Abel statistical delta quasi Cauchy sequences
Taylan, İffet; Çakallı, Hüseyin (Maltepe Üniversitesi, 2019)In this paper, we investigate the concept of Abel statistical delta quasi Cauchy sequences. A real function f is called Abel statistically delta ward continuous it preserves Abel statistical delta quasi Cauchy sequences, ... 
Abel statistical delta quasi Cauchy sequences in metric spaces
Taylan, İffet (Maltepe Üniversitesi, 2021)In this paper, we investigate the concept of Abel statistical delta ward compactness and Abel statistical delta ward continuity in metric spaces. A function f defined on a metric space X into X is called Abel statistically ... 
Abel statistical quasi Cauchy sequences in 2normed spaces
Maltepe Üniversitesi, İnsan ve Toplum Bilimleri Fakültesi; Ersan, Sibel; Çakallı, Hüseyin (Maltepe Üniversitesi, 2021)In this paper, we investigate the concept of Abel statistical ward continuity in 2normed spaces. A function f defined on a 2normed space X into X is called Abel statistically ward continuous if it preserves Abel statistical ... 
Abel statistical quasi Cauchy sequences in metric spaces
Maltepe Üniversitesi, İnsan ve Toplum Bilimleri Fakültesi; Çakallı, Hüseyin (Maltepe Üniversitesi, 2019)In this study, we investigate the concepts of Abel statistical convergence and Abel statistical quasi Cauchy sequences. A function f from a subset E of a metric space X into X is called Abel statistically ward continuous ... 
Abstract book
Çakallı, Hüseyin; Savaş, Ekrem; Sakallı, İzzet; Horgan, Jane; Daly, Charlie; Power, James; Kocinac, Ljubi^sa; Cavalanti, M. Marcelo; Corrˆea, Wellington J.; Özsarı, Türker; Sep´ulveda, Mauricio; Asem, Rodrigo V´ejar; Harte, Robin; Açıkgöz, Ahu; Esenbel, Ferhat; Jabor, Ali Ameer; Omran, Ahmed abdAli; Varol, Banu Pazar; Kanetov, Bekbolot; Baidzhuranova, Anara; Saktanov, Ulukbek; Kanetova, Dinara; Zhanakunova, Meerim; Liu, Chuan; Yıldırım, Esra Dalan; Şahin, Hakan; Altun, Ishak; Türkoğlu, Duran; Akız, Hürmet Fulya; Mucuk, Osman; Motallebi, Mohammad Reza; Demir, Serap; Şahan, Tunçar; Kelaiaia, Smail; Yaying, Taja; Noiri, Takashi; Vergili, Tane; Çetkin, Vildan; Misajleski, Zoran; Shekutkovski, Nikita; Durmishi, Emin; Berkane, Ali; Belhout, Mohamed; EsSalih, Aries Mohammed; Sönmez, Ayşe; Messirdi, Bachir; Derhab, Mohammed; Khedim, Tewfik; Karim, Belhadj; Affane, Doria; Yarou, Mustapha Fateh; Yılmaz, Fatih; Sertbaş, Meltem; Bouchelaghem, Faycal; Ardjouni, Abdelouaheb; Djoudi, Ahcene; Çiçek, Gülseren; Mahmudov, Elimhan; ElMetwally, Hamdy A.; ALkaff, M.; Mustafayev, Heybetkulu; Duru, Hülya; Biroud, Kheireddine (Maltepe Üniversitesi, 2019)On behalf of the Organizing Committee, we are very pleased to welcome you to the 3nd International Confer ence of Mathematical Sciences (ICMS 2019) to be held between 48 September 2019 at Maltepe University in Istanbul. We ... 
Compact operators on Riesz difference sequence space of fractional order
Yaying, Taja (Maltepe Üniversitesi, 2021)In this paper we study the domain of generalized Riesz difference matrix RqΔ(α) of fractional order α in the classical sequence spaces c0 and c and introduced the sequence spaces r0 q (Δ(α) ) and rc q (Δ(α) ). We ... 
Compact operators on Riesz difference sequence space of fractional order
Yaying, Taja (Maltepe Üniversitesi, 2021)In this paper we study the domain of generalized Riesz difference matrix RqΔ(α) of fractional order α in the classical sequence spaces c0 and c and introduced the sequence spaces r0 q (Δ(α) ) and rc q (Δ(α) ). We ... 
Completion of cone metric spaces
Çakallı, Hüseyin; Sönmez, Ayşe (Maltepe Üniversitesi, 2009)In case of ordinary metric spaces, completion of a metric space is wellknown. In 2007, the concept of cone metric space was introduced by Huang LongGuang and Zhang Xian. In this note, we construct completion of cone ... 
Completion of cone normed spaces
Çakallı, Hüseyin; Sönmez, Ayşe (Maltepe Üniversitesi, 2009)In case of ordinary normed spaces, completion of a normed space is wellknown. In 2007, the concept of cone metric space was introduced by Huang LongGuang and Zhang Xian. Recently Sonmez introduce the concept of cone ... 
Cone normed spaces and weighted means
Sönmez, Ayşe; Çakallı, Hüseyin (ScienceDirect, 2010)In this paper, we study the main properties of cone normed spaces, and prove some theorems of weighted means in cone normed spaces. 
Deferred statistical convergence of order α in topological groups
Şengül, Hacer; Et, Mikail; Çakallı, Hüseyin (Maltepe Üniversitesi, 2019)In this paper, the concept of deferred statistical convergence of order α is generalized to topological groups, and some inclusion relations between the set of all statistically convergent sequences of order α in ... 
Delta quasi Cauchy sequences in metric spaces
Maltepe Üniversitesi, İnsan ve Toplum Bilimleri Fakültesi; Çakallı, Hüseyin (Maltepe Üniversitesi, 2021)t. In this extended abstract, we introduce the concept of delta quasi Cauchy sequences in metric spaces. A function f defined on a subset of a metric space X to X is called delta ward continuous if it preserves delta quasi ... 
DeltaQuasislowly oscillating continuity
Çakallı, Hüseyin; Çanak, İbrahim; Dik, Mehmet (ScienceDirect, 2016)Firstly, some definitions and notations will be given in the following. Throughout this paper, N will denote the set of all positive integers. We will use boldface letters x,y,z,. . . for sequences x = (xn),y = (yn),z= ... 
Functions preserving slowly oscillating double sequences
Çakallı, Hüseyin; Patterson, Richard F. (Universitatii Al.I.Cuza din Iasi, 2016)A double sequence x = {xk,l} of points in R is slowly oscillating if for any given ? > 0, there exist ? = ?(?) > 0, ? = ?(?) > 0, and N = N(?) such that xk,l  xs,t < ? whenever k, l ? N(?) and k ? s ? (1 + ... 
Fuzzy compactness via summability
Çakallı, Hüseyin; Das, Pratulananda (Elsevier, 2009)A fuzzy subset α of a fuzzy topological space is fuzzy sequentially compact if any sequence x = (λxn an ) of fuzzy points in α has a generalized fuzzy subsequence which is fuzzy convergent in α. More generally we say ... 
Gcompactness and local Gcompactness of topological groups with operations
Mucuk, Osman (Maltepe Üniversitesi, 2021)It is well known that for a Hausdorff topological group X, the limits of convergent sequences in X define a function denoted by lim from the set of all convergent sequences in X to X. This notion has been modified by ... 
G−fuzzy sequential continuity in FTS
Yaying, Taja; Açıkgöz, Ahu; Çakallı, Hüseyin (Maltepe Üniversitesi, 2019)Cakalli extended the concept of G−sequential compactness to a fuzzy topological group and introduced the notion of G−fuzzy sequential compactness, where G is a function from a suitable subset of the set of all sequences ... 
An interpretation of Gcontinuity in neutrosophic soft topological spaces
Açıkgöz, Ahu; Esenbel, Ferhat (Maltepe Üniversitesi, 2021). Scientists have always adopted the concept of sequential continuity as an indispensable subject, not only in Topology but also in some other branches of Mathematics. Connor and GrosseErdmann gave this concept for real ... 
Lacunary a− statistical convergence and lacunary strong a− convergence of order (α, β) with respect to a modulus
Şengül, Hacer; Et, Mikail; Çakallı, Hüseyin (Maltepe Üniversitesi, 2019)In this paper, the definitions of lacunary strong A−convergence of order (α, β) with respect to a modulus and lacunary A−statistical convergence of order (α, β) are given. We study some connections between lacunary strong ...