λ-Statistical Convergence of a Sequence of Random Variables in Probability

 

Sanjoy Ghosal

Department of Mathematics, Kalyani Government Engineering College, Kalyani, Nadia-741235, West Bengal, India.

*Corresponding Author E-mail: sanjoykrghosal@yahoo.co.in

 

ABSTRACT:

In this paper the ideas of two types of convergences of a sequence of random variables, namely, λ -statistical convergence in probability and λ - statistical convergence in mean of order r are introduced and the interrelationship between them is investigated. Also their certain basic properties are studied.

 

KEYWORDS: Random variable, probability,  λ -statistical convergence in probability, λ -statistical convergence in mean of order r.

Mathematics Subject Classification (2010):  40A05, 40G15, 60B10.

 

1. INTRODUCTION AND BACKGROUND:

The idea of convergence of a real sequence was extended to statistical convergence by Fast [9] (See also Schoenberg [13]) as follows:  If  denotes the set of natural numbers and   then  denotes the cardinality of the set  The upper and lower natural densities of the set  is defined by

 

3. REFERENCES:

[1]     P. Das, Some further results on ideal convergence in topological spaces, Topology and its Applications, 159 (2012) 2621-2626.

[2]     P. Das, S. Ghosal, Some further results on -Cauchy sequences and condition (AP), Computer and Mathematics with Applications, 59 (2010) 2597-2600.

[3]     P. Das, S. Ghosal, On -Cauchy nets and completeness, Topology and its Applications, 157 (2010) 1152-1156.

[4]     P. Das, S. Ghosal, When -Cauchy nets in complete uniform spaces are -convergent, Topology and its Applications, 158 (2011) 1529-1533.

[5]     P. Das, S. Ghosal, S. Pal, Extending asymmetric convergence and Cauchy condition using ideals, Mathematica Slovaca, 63 (2013) 545-562.

[6]     P. Das, K. Dutta, V. Karakaya, S. Ghosal, Some further generalizations of strong convergence in probabilistic metric space using ideals, Abstract and Applied Analysis., Volume 2013, Article ID 765060, 8 pages. doi. org/10.1155/2013/765060.

[7]     P. Das, S. Pal, S. Ghosal, Some further remarks on ideal summability in 2-normed spaces, Applied Mathematics Letters, 24 (2011) 39-43.

[8]     P. Das, E. Savas, S. Ghosal, On generalization of certain summability methods using ideals, Applied Mathematics Letters, 24, (2011), 1509-1514.

[9]     H. Fast, Sur la convergence statistique, Colloq. Math. 2 (1951), 241-244.

[10]   J. A. Fridy, On statistical convergence, Analysis, 5 (1985), 301-313.

[11]   J. A. Fridy,  M. K. Khan, Tauberian theorems via statistical convergence, Journal of Mathematical Analysis and Applications,  228 (1998), 73-95.

[12]   T. Šalát, On statistically convergent sequences of real numbers, Mathematica Slovaca, 30 (1980), 139-150.

[13]   I. J. Schoenberg, The integrability of certain functions and related summability methods, Amer. Math. Monthly, 66 (1959), 361-375.

[14]   S. Ghosal, -uniform continuity and -uniform boundedness of a function, Demonstratio Mathematica, 45 (4) (2012), 887-894.

[15]   S. Ghosal, Statistical convergence of a sequence of random variables and limit theorems, Applications of Mathematics, 4 (58) (2013) 423-437.

[16]   S. Ghosal, -statistical convergence of a sequence of random variables in probability, Afrika Matematica, doi: 10.1007/s13370-013-0142-x.

[17]   S. Ghosal, S. Pal, On asymmetric  and -divergence, Demonstratio Mathematica, 46 (1) (2013), 137-147.

[18]   B. K. Lahiri, P. Das,   and -convergence in topological spaces, Math. Bohem., 130, (2005) 153-160.

[19]   B. K. Lahiri, P. Das,   and -convergence of nets, Real Analysis Exchange, 33, (2007-2008) 431-442.

[20]   M. Mursaleen,  -statistical convergence, Mathematica Slovaca, 50 (1) (2000), 111-115.

[21]   V. K. Rohatgi, An introduction to probability theory and mathematical statistics, Second ed, Wiley Eastern Limited.

 

 

 

Received on 20.01.2014    Accepted on 29.01.2014

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