• Bulletin of the Korean Mathematical Society
• /
• v.47 no.3
• /
• pp.443-454
• /
• 2010

In this paper, we investigate the zeros distribution and Borel direction for the solutions of linear homogeneous differential equation $f^{(n)}+A_{n-2}(z)f^{(n-2)}+{\cdots}+A_1(z)f'+A_0(z)f=0(n{\geq}2)$ in an angular domain. Especially, we establish a relation between a cluster ray of zeros and Borel direction.

• Communications of the Korean Mathematical Society
• /
• v.14 no.2
• /
• pp.353-364
• /
• 1999

We found the characterizations for convolution operators in the Beurling`s generalized distribution space to be hyperbolic.

• Communications of the Korean Mathematical Society
• /
• v.19 no.4
• /
• pp.731-743
• /
• 2004

Harmonic distribution is the distribution which has the minimal value of functional called energy. In this paper it is shown as a specific distribution of semisimple Lie group whose manifold is compact.

• Communications for Statistical Applications and Methods
• /
• v.23 no.5
• /
• pp.363-383
• /
• 2016

The Weibull family of lifetime distributions play a fundamental role in reliability engineering and life testing problems. This paper investigates the potential usefulness of transmuted new generalized Weibull (TNGW) distribution for modeling lifetime data. This distribution is an important competitive model that contains twenty-three lifetime distributions as special cases. We can obtain the TNGW distribution using the quadratic rank transmutation map (QRTM) technique. We derive the analytical shapes of the density and hazard functions for graphical illustrations. In addition, we explore some mathematical properties of the TNGW model including expressions for the quantile function, moments, entropies, mean deviation, Bonferroni and Lorenz curves and the moments of order statistics. The method of maximum likelihood is used to estimate the model parameters. Finally the applicability of the TNGW model is presented using nicotine in cigarettes data for illustration.

• Bulletin of the Korean Mathematical Society
• /
• v.34 no.2
• /
• pp.287-293
• /
• 1997

(t); t \geq 0} on R^1$ satisfying the following stochastic differential equation.

• Journal of the Chungcheong Mathematical Society
• /
• v.27 no.3
• /
• pp.347-361
• /
• 2014

Generalized Pareto distribution play an important role in reliability, extreme value theory, and other branches of applied probability and statistics. This family of distribution includes exponential distribution, Pareto or Lomax distribution. In this paper, we established exact expressions and recurrence relations satised by the quotient moments of generalized order statistics for a generalized Pareto distribution. Further the results for quotient moments of order statistics and records are deduced from the relations obtained and a theorem for characterizing this distribution is presented.

• Journal of the Chungcheong Mathematical Society
• /
• v.26 no.2
• /
• pp.421-426
• /
• 2013

We give a series of discrete random variables which converges to a random variable whose distribution function is the Riesz-N$\acute{a}$gy-Tak$\acute{a}$cs (RNT) distribution. We show this using the correspondence theorem that if the moments coincide then their corresponding distribution functions also coincide.

• Journal of the Korean Mathematical Society
• /
• v.41 no.4
• /
• pp.755-772
• /
• 2004

We show that the Fourier-Laplace series of a distribution on the sphere is uniformly Cesaro-summable to zero on a neighborhood of a point if and only if this point does not belong to the support of the distribution. Similar results on the ball and on the real projective space are also proved.

• Bulletin of the Korean Mathematical Society
• /
• v.44 no.2
• /
• pp.265-270
• /
• 2007

The modern approach for wavelets imposes a Bayesian prior model on the wavelet coefficients to capture the sparseness of the wavelet expansion. The idea is to build flexible probability models for the marginal posterior densities of the wavelet coefficients. In this note, we derive exact expressions for a popular model for the marginal posterior density.

• Bulletin of the Korean Mathematical Society
• /
• v.49 no.5
• /
• pp.1041-1055
• /
• 2012

The parameter lower (upper) distribution set corresponds to the cylindrical lower or upper local dimension set for a self-similarmeasure on a self-similar set satisfying the open set condition.