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Journal of the Korean Mathematical Society
Journal Basic Information
pISSN :
0304-9914
eISSN :
2234-3008
Journal DOI :
10.4134/JKMS
Frequency :
Others
Publisher:
The Korean Mathematical Society
Editor in Chief :
Yun Sung Choi
Volume & Issues
Volume 41, Issue 6 - Nov 2004
Volume 41, Issue 5 - Sep 2004
Volume 41, Issue 4 - Jul 2004
Volume 41, Issue 3 - May 2004
Volume 41, Issue 2 - Mar 2004
Volume 41, Issue 1 - Jan 2004
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1
A NUMBER SYSTEM IN ℝ
^{n}
Jeong, Eui-Chai ;
Journal of the Korean Mathematical Society, volume 41, issue 6, 2004, Pages 945~955
DOI : 10.4134/JKMS.2004.41.6.945
Abstract
In this paper, we establish a number system in
which arises from a Haar wavelet basis in connection with decompositions of certain Cuntz algebra representations on
(
). Number systems in
are also of independent interest [9]. We study radix-representations of
:
:
…
ㆍ
… as
2
THE TRAPEZOIDAL RULE WITH A NONLINEAR COORDINATE TRANSFORMATION FOR WEAKLY SINGULAR INTEGRALS
Yun, Beong-In ;
Journal of the Korean Mathematical Society, volume 41, issue 6, 2004, Pages 957~976
DOI : 10.4134/JKMS.2004.41.6.957
Abstract
It is well known that the application of the nonlinear coordinate transformations is useful for efficient numerical evaluation of weakly singular integrals. In this paper, we consider the trapezoidal rule combined with a nonlinear transformation
(b;
), containing a parameter b, proposed first by Yun [14]. It is shown that the trapezoidal rule with the transformation
(b;
), like the case of the Gauss-Legendre quadrature rule, can improve the asymptotic truncation error by using a moderately large b. By several examples, we compare the numerical results of the present method with those of some existing methods. This shows the superiority of the transformation
(b;
).TEX>).
3
GENERALIZED Δ-COHERENT PAIRS
Kwon, K.H. ; Lee, J.H. ; F. Marcellan ;
Journal of the Korean Mathematical Society, volume 41, issue 6, 2004, Pages 977~994
DOI : 10.4134/JKMS.2004.41.6.977
Abstract
A pair of quasi-definite linear functionals {u
, u
} is a generalized
-coherent pair if monic orthogonal polynomials (equation omitted) relative to u
and u
, respectively, satisfy a relation (equation omitted) where
and T
are arbitrary constants and
p
4
HYERS-ULAM-RASSIAS STABILITY OF THE BANACH SPACE VALUED LINEAR DIFFERENTIAL EQUATIONS y′
Miura, Takeshi Miura ; Jung, Soon-Mo ; Takahasi, Sin-Ei ;
Journal of the Korean Mathematical Society, volume 41, issue 6, 2004, Pages 995~1005
DOI : 10.4134/JKMS.2004.41.6.995
Abstract
The aim of this paper is to prove the stability in the sense of Hyers-Ulam- Rassias of the Banach space valued differentialequation y`
5
ON ROTATION SURFACES IN THE MINKOWSKI 3-DIMENSIONAL SPACE WITH POINTWISE 1-TYPE GAUSS MAP
Athoumane Niang ;
Journal of the Korean Mathematical Society, volume 41, issue 6, 2004, Pages 1007~1021
DOI : 10.4134/JKMS.2004.41.6.1007
Abstract
In this paper, we study rotation surfaces in the Minkowski 3-dimensional space with pointwise 1-type Gauss map and obtain by the use of the concept of pointwise finite type Gauss map, a characterization theorem concerning rotation surfaces and constancy of the mean curvature of certain open subsets on these surfaces.
6
LIMIT THEOREMS FOR PARTIAL SUM PROCESSES OF A GAUSSIAN SEQUENCE
Choi, Yong-Kab ; Swang, Kyo-Shin ; Moon, Hee-Jin ; Kim, Tae-Sung ; Baek, Jong-Il ;
Journal of the Korean Mathematical Society, volume 41, issue 6, 2004, Pages 1023~1034
DOI : 10.4134/JKMS.2004.41.6.1023
Abstract
In this paper we establish limsup and liminf theorems for the increments of partial sum processes of a dependent stationary Gaussian sequence.
7
THE UNIT TANGENT SPHERE BUNDLE OF A COMPLEX SPACE FORM
Cho, Jong-Taek ; Chun, Sun-Hyang ;
Journal of the Korean Mathematical Society, volume 41, issue 6, 2004, Pages 1035~1047
DOI : 10.4134/JKMS.2004.41.6.1035
Abstract
In this paper, we study the unit tangent sphere bundles T
M(4c) of complex space forms M(4c) with constant holomorphic sectional curvature 4c. In particular, we determine T
M(4c) whose Ricci tensors satisfy the Einstein-like conditions.
8
ORTHOGONAL POLYNOMIALS SATISFYING PARTIAL DIFFERENTIAL EQUATIONS BELONGING TO THE BASIC CLASS
Lee, J.K. ; L.L. Littlejohn ; Yoo, B.H. ;
Journal of the Korean Mathematical Society, volume 41, issue 6, 2004, Pages 1049~1070
DOI : 10.4134/JKMS.2004.41.6.1049
Abstract
We classify all partial differential equations with polynomial coefficients in
and y of the form A(
)
＋ 2B(
, y)
＋ C(y)
＋ D(
)
＋ E(y)
9
STRONG CONSISTENCY FOR AR MODEL WITH MISSING DATA
Lee, Myung-Sook ;
Journal of the Korean Mathematical Society, volume 41, issue 6, 2004, Pages 1071~1086
DOI : 10.4134/JKMS.2004.41.6.1071
Abstract
This paper is concerned with the strong consistency of the estimators of the autocovariance function and the spectral density function for the autoregressive process in the case where only an amplitude modulated process with missing data is observed. These results will give a simple and practical sufficient condition for the strong consistency of those estimators. Finally, some examples are given to illustrate the application of main result.
10
METRICAL AND TOPOLOGICAL PRESSURE OF FLOWS WITHOUT FIXED POINTS
Lianfa He ; Fenghong Yang ; Yinghui Gao ;
Journal of the Korean Mathematical Society, volume 41, issue 6, 2004, Pages 1087~1099
DOI : 10.4134/JKMS.2004.41.6.1087
Abstract
We study the metrical and topological pressure for flows without fixed points on a compact metric space, and get the results as follows: (1) The metrical pressure with respect to an ergodic measure can be defined by (t,
)-spanning sets. (2) The topological pressure is the supremum of metrical pressures with respect to all ergodic measures. (3) The properties that the topological pressure is zero, nonzero, finite or infinite respectively are invariant under weak equivalence.
11
HOMOTOPY FIXED POINT SETS AND ACTIONS ON HOMOGENEOUS SPACES OF p-COMPACT GROUPS
Kenshi Ishiguro ; Lee, Hyang-Sook ;
Journal of the Korean Mathematical Society, volume 41, issue 6, 2004, Pages 1101~1114
DOI : 10.4134/JKMS.2004.41.6.1101
Abstract
We generalize a result of Dror Farjoun and Zabrodsky on the relationship between fixed point sets and homotopy fixed point sets, which is related to the generalized Sullivan Conjecture. As an application, we discuss extension problems considering actions on homogeneous spaces of p-compact groups.