Journal of the Chungcheong Mathematical Society

CONTENTS

Double pairwise $(r,s)(u,v)$-precontinuous mappings Eun Pyo Lee and Seung On Lee	1
M{\"o}bius functions of order $k$ in function fields Hwanyup Jung	15
The matrix geometric means under partial trace Sejong Kim	21
Robust duality for nonsmooth multiobjective optimization problems Gue Myung Lee and Moon Hee Kim	31
Some notes on relatively compact subsets of fuzzy sets Yun Kyong Kim and Joo-Mok Kim	41
Some characterizations of dedekind modules Tae In Kwon, Hwankoo Kim, and Myeong Og Kim	53
Persistent actions on compact metric spaces Jiweon Ahn, Keonhee Lee, and Seunghee Lee	61
The arcsine law in the generalized analogue of wiener space Kun Sik Ryu	67
On some twisted cohomology of the ring of integers Seok-Min Lee	77
Asymptotic property of perturbed nonlinear systems Dong Man Im, Sang Il Choi, and Yoon Hoe Goo	103
Choosing regularization parameter by global $L$-curve criterion SeYoung Oh and SunJoo Kwon	117
Principal cofibrations and generalized co-$H$-spaces Yeon Soo Yoon	129
A remark on a stability in multi-valued dynamics Hahng-Yun Chu, Jong-suh Park, and Seung Ki Yoo	141
The AP-Henstock integral of vector-valued functions Ju Han Yoon	151
A note on explicit solutions of certain impulsive fractional differential equations Namjip Koo	159