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Kyungpook mathematical journal
Journal Basic Information
pISSN :
1225-6951
eISSN :
0454-8124
Journal DOI :
10.5666/KMJ
Frequency :
Others
Publisher:
Department of Mathematics, Kyungpook National University
Editor in Chief :
Sang-Dong Kim
Volume & Issues
Volume 54, Issue 4 - Dec 2014
Volume 54, Issue 3 - Sep 2014
Volume 54, Issue 2 - Jun 2014
Volume 54, Issue 1 - Mar 2014
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1
Exposed Symmetric Bilinear Forms of 𝓛
_{s}
(
^{2}
d
_{*}
(1, ω)
^{2}
)
Kim, Sung Guen ;
Kyungpook mathematical journal, volume 54, issue 3, 2014, Pages 341~347
DOI : 10.5666/KMJ.2014.54.3.341
Abstract
We classify the exposed symmetric bilinear forms of the unit ball of
.
2
Uniqueness of Entire Functions and Differential Polynomials Sharing one Value
Zhang, Xiao-Bin ; Meng, Da-Wei ;
Kyungpook mathematical journal, volume 54, issue 3, 2014, Pages 349~363
DOI : 10.5666/KMJ.2014.54.3.349
Abstract
In this paper, we shall utilize Nevanlinna value distribution theory to study the uniqueness problems on entire functions and differential polynomials sharing one value. Our theorems improve or generalize some results of Zhang and Lin, Chen, Zhang, Lin and Chen.
3
Bounded Mocanu Variation Properties of Certain Subclass of Meromorphic Functions Involving a Family of Linear Operator
Muhammad, Ali ;
Kyungpook mathematical journal, volume 54, issue 3, 2014, Pages 365~374
DOI : 10.5666/KMJ.2014.54.3.365
Abstract
In this paper, we introduce a new subclass of meromorphic functions defined in the punctured unit disc. We derive inclusion relationships, radius problem and some other interesting properties of this class are investigated.
4
Halpern`s Iteration for Strongly Relatively Nonexpansive Mappings in Banach Spaces
Suantai, Suthep ; Cholamjiak, Prasit ;
Kyungpook mathematical journal, volume 54, issue 3, 2014, Pages 375~385
DOI : 10.5666/KMJ.2014.54.3.375
Abstract
We investigate strong convergence of Halpern`s iteration for a countable family of strongly relatively nonexpansive mappings in the framework of uniformly convex and uniformly smooth Banach spaces. Our results extend those announced by many authors.
5
Weak Separation Axioms in Generalized Topological Spaces
Renukadevi, V. ; Sivaraj, D. ;
Kyungpook mathematical journal, volume 54, issue 3, 2014, Pages 387~399
DOI : 10.5666/KMJ.2014.54.3.387
Abstract
We show that in quasi-topological spaces, separation axiom
is equivalent to
,
is equivalent to semi -
, and semi -
is equivalent to semi -
. Also, we give characterizations for
, semi -
and semi -
generalized topological spaces.
6
Hyers-Ulam Stability of Jensen Functional Equation in p-Banach Spaces
Kim, Hark-Mahn ; Jun, Kil-Woung ; Son, Eunyoung ;
Kyungpook mathematical journal, volume 54, issue 3, 2014, Pages 401~411
DOI : 10.5666/KMJ.2014.54.3.401
Abstract
In this paper, we prove the generalized Hyers-Ulam stability of the following Jensen type functional equation $$f(\frac{x-y}{n}+z)+f(\frac{y-z}{n}+x)+f(\frac{z-x}{n}+y)
7
Statistically Convergent Fuzzy Sequence Spaces by Fuzzy Metric
Das, Paritosh Chandra ;
Kyungpook mathematical journal, volume 54, issue 3, 2014, Pages 413~423
DOI : 10.5666/KMJ.2014.54.3.413
Abstract
In this article we study different properties of the statistically convergent and statistically null sequence classes of fuzzy real numbers with fuzzy metric, like completeness, solidness, sequence algebra, symmetricity and convergence free.
8
The Spectral Radii of Graphs with Prescribed Degree Sequence
Li, Jianxi ; Shiu, Wai Chee ;
Kyungpook mathematical journal, volume 54, issue 3, 2014, Pages 425~441
DOI : 10.5666/KMJ.2014.54.3.425
Abstract
In this paper, we first present the properties of the graph which maximize the spectral radius among all graphs with prescribed degree sequence. Using these results, we provide a somewhat simpler method to determine the unicyclic graph with maximum spectral radius among all unicyclic graphs with a given degree sequence. Moreover, we determine the bicyclic graph which has maximum spectral radius among all bicyclic graphs with a given degree sequence.
9
Fekete-Szegö Problem and Upper Bound of Second Hankel Determinant for a New Class of Analytic Functions
Bansal, Deepak ;
Kyungpook mathematical journal, volume 54, issue 3, 2014, Pages 443~452
DOI : 10.5666/KMJ.2014.54.3.443
Abstract
In the present investigation we consider Fekete-Szeg
problem with complex parameter
and also find upper bound of the second Hankel determinant
for functions belonging to a new class
using Toeplitz determinants.
10
Certain Class of Analytic Functions Defined by Ruscheweyh Derivative with Varying Arguments
El-Ashwah, Rabha Mohamed ; Aouf, Mohamed Kamal ; Hassan, Ahmed ; Hassan, Alaa ;
Kyungpook mathematical journal, volume 54, issue 3, 2014, Pages 453~461
DOI : 10.5666/KMJ.2014.54.3.453
Abstract
In this paper we derive some results for certain new class of analytic functions defined by using Ruscheweyh derivative with varying arguments.
11
On the Modified q-Euler Numbers and Polynomials withWeak Weight 0
Park, Jin-Woo ; Rim, Seog-Hoon ; Pyo, Sung-Soo ; Kwon, JongKyum ;
Kyungpook mathematical journal, volume 54, issue 3, 2014, Pages 463~469
DOI : 10.5666/KMJ.2014.54.3.463
Abstract
In this paper, we construct new q-extension of Euler polynomials with weight 0. These modified q-Euler polynomials are useful to study various identities of Carlitz`s q-Bernoulli numbers.
12
Rings Whose Simple Singular Modules are PS-Injective
Xiang, Yueming ; Ouyang, Lunqun ;
Kyungpook mathematical journal, volume 54, issue 3, 2014, Pages 471~476
DOI : 10.5666/KMJ.2014.54.3.471
Abstract
Let R be a ring. A right R-module M is PS-injective if every R-homomorphism
for every principally small right ideal aR can be extended to
. We investigate, in this paper, rings whose simple singular modules are PS-injective. New characterizations of semiprimitive rings and semisimple Artinian rings are given.
13
On Regular Generalized b-Continuous Map in Topological Space
Mariappa, Kulandaivelu ; Sekar, Subramaniam ;
Kyungpook mathematical journal, volume 54, issue 3, 2014, Pages 477~483
DOI : 10.5666/KMJ.2014.54.3.477
Abstract
In this paper, we introduce a new class of regular generalized b-continuous map and study some of their properties as well as inter relationship with other continuous maps.
14
A Coupled Fixed Point Theorem for Mixed Monotone Mappings on Partial Ordered G-Metric Spaces
Lee, Hosoo ;
Kyungpook mathematical journal, volume 54, issue 3, 2014, Pages 485~500
DOI : 10.5666/KMJ.2014.54.3.485
Abstract
In this paper, we establish coupled fixed point theorems for mixed monotone mappings satisfying nonlinear contraction involving a pair of altering distance functions in ordered G-metric spaces. Via presented theorems we extend and generalize the results of Harjani et al. [J. Harjani, B. L
pez and K. Sadarangani, Fixed point theorems for mixed monotone operators and applications to integral equations, Nonlinear Anal. 74 (2011) 1749-1760] and Choudhury and Maity [B.S. Choudhury and P. Maity, Coupled fixed point results in generalized metric spaces. Math. Comput. Model. 54 (2011), 73-79].
15
The Order of Normal Form Generalized Hypersubstitutions of Type τ
Sudsanit, Sivaree ; Leeratanavalee, Sorasak ;
Kyungpook mathematical journal, volume 54, issue 3, 2014, Pages 501~509
DOI : 10.5666/KMJ.2014.54.3.501
Abstract
In 2000, K. Denecke and K. Mahdavi showed that there are many idempotent elements in
the set of normal form hypersubstitutions of type ${\tau}