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Bull. Korean Math. Soc. 2018 Vol. 55, No. 4, 1007—1315
On generalized Krull power series rings
Le Thi Ngoc Giau, Phan Thanh Toan
MSC numbers : 13F05, 13F25
Bull. Korean Math. Soc. 2018 Vol. 55, No. 4, 1007—1012
$\eta$-parallel H-contact 3-manifolds
Jong Taek Cho
MSC numbers : Primary 53C25; Secondary 53B20, 53D10
Bull. Korean Math. Soc. 2018 Vol. 55, No. 4, 1013—1022
Morphisms of varieties over ample fields
Lior Bary-Soroker, Wulf-Dieter Geyer, Moshe Jarden
MSC numbers : 12E30
Bull. Korean Math. Soc. 2018 Vol. 55, No. 4, 1023—1035
A note on the units of Mantaci-Reutenauer algebra
Hasan Arslan, Himmet Can
MSC numbers : Primary 20F55
Bull. Korean Math. Soc. 2018 Vol. 55, No. 4, 1037—1049
Real polyhedral products, Moore's conjecture, and simplicial actions on real toric spaces
Jin Hong Kim
MSC numbers : 55Q05, 13F55, 55U10, 55U10, 14M25, 20C30
Bull. Korean Math. Soc. 2018 Vol. 55, No. 4, 1051—1063
Approximate controllability of second-order nonlocal impulsive functional integro-differential systems in Banach spaces
Dumitru Baleanu, Mani Mallika Arjunan, Mahalingam Nagaraj, Selvaraj Suganya
MSC numbers : 93B05, 34A37, 34B10, 35R10
Bull. Korean Math. Soc. 2018 Vol. 55, No. 4, 1065—1092
Pullbacks of $\mathcal{C}$-hereditary domains
Yongyan Pu, Gaohua Tang, Fanggui Wang
MSC numbers : 13C99, 13A15
Bull. Korean Math. Soc. 2018 Vol. 55, No. 4, 1093—1101
A characterization of hyperbolic spaces
Dong-Soo Kim, Young Ho Kim, Jae Won Lee
MSC numbers : 53B25, 53B30
Bull. Korean Math. Soc. 2018 Vol. 55, No. 4, 1103—1107
Approximate and Character amenability of Vector-valued Lipschitz algebras
Emamgholi Biyabani, Ali Rejali
MSC numbers : Primary 46B28, 46M05, 46J10
Bull. Korean Math. Soc. 2018 Vol. 55, No. 4, 1109—1124
Thickly syndetic sensitivity of semigroup actions
Huoyun Wang
MSC numbers : Primary 37B20, 37B05, 54H20
Bull. Korean Math. Soc. 2018 Vol. 55, No. 4, 1125—1135
Disjoint supercyclic weighted composition operators
Yu-Xia Liang, Ze-Hua Zhou
MSC numbers : Primary 47A16, 47B33, 47B38
Bull. Korean Math. Soc. 2018 Vol. 55, No. 4, 1137—1147
A generalization of Gauss' triangular theorem
Jangwon Ju, Byeong-Kweon Oh
MSC numbers : Primary 11E12, 11E20
Bull. Korean Math. Soc. 2018 Vol. 55, No. 4, 1149—1159
Global solutions for a class of nonlinear sixth-order wave equation
Ying Wang
MSC numbers : 35L60, 35K55, 35Q80
Bull. Korean Math. Soc. 2018 Vol. 55, No. 4, 1161—1178
Weakly tripotent rings
Simion Breaz, Andrada Cimpean
MSC numbers : 16R50, 16U60, 16U99
Bull. Korean Math. Soc. 2018 Vol. 55, No. 4, 1179—1187
On a class of constacyclic codes of length $2p^s$ over $\frac{\mathbb F_{p^m}[u]}{\left\langle u^a \right\rangle}$
Hai Q. Dinh, Bac Trong Nguyen, Songsak Sriboonchitta
MSC numbers : Primary 94B15, 94B05; Secondary 11T71
Bull. Korean Math. Soc. 2018 Vol. 55, No. 4, 1189—1208
On the norm of the operator $aI+bH$ on $L^p(\mathbb R)$
Yong Ding, Loukas Grafakos, Kai Zhu
MSC numbers : Primary 42A45; Secondary 42A50, 42A99
Bull. Korean Math. Soc. 2018 Vol. 55, No. 4, 1209—1219
Note on the decomposition of states
Donghoon Hyeon, Jaekwang Kim
MSC numbers : 14L24
Bull. Korean Math. Soc. 2018 Vol. 55, No. 4, 1221—1230
On conformal transformations between two almost regular $(\alpha,\beta)$-metrics
Guangzu Chen, Lihong Liu
MSC numbers : 53B40, 53C60
Bull. Korean Math. Soc. 2018 Vol. 55, No. 4, 1231—1240
Generating sample paths and their convergence of the geometric fractional Brownian motion
Hi Jun Choe, Jeong Ho Chu, Jongeun Kim
MSC numbers : Primary 60G22
Bull. Korean Math. Soc. 2018 Vol. 55, No. 4, 1241—1261
Weighted gDMP inverse of operators between Hilbert spaces
Dijana Mosic
MSC numbers : 47A05, 47A99, 15A09
Bull. Korean Math. Soc. 2018 Vol. 55, No. 4, 1263—1271
The properties of Riemannian foliations admitting transversal conformal fields
Seoung Dal Jung, Keum Ran Lee
MSC numbers : 53C20, 57R30
Bull. Korean Math. Soc. 2018 Vol. 55, No. 4, 1273—1283
Determinantal expression of the general solution to a restricted system of quaternion matrix equations with applications
Guang-Jing Song
MSC numbers : 15A09, 15A24
Bull. Korean Math. Soc. 2018 Vol. 55, No. 4, 1285—1301
A stochastic variance reduction method for PCA by an exact penalty approach
Yoon Mo Jung, Jae Hwa Lee, Sangwoon Yun
MSC numbers : 62H25, 90C30, 15A18
Bull. Korean Math. Soc. 2018 Vol. 55, No. 4, 1303—1315

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