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 Bull. Korean Math. Soc. 2018 Vol. 55, No. 5, 1317—1625Download front and back covers
 Height inequality for rational maps and bounds for preperiodic points Chong Gyu Lee MSC numbers : Primary 11G50, 37P30; Secondary 14G50, 32H50, 37P05 Bull. Korean Math. Soc. 2018 Vol. 55, No. 5, 1317—1332
 A question on $*$-regular rings Jian Cui, Xiaobin Yin MSC numbers : 16E50, 16W10 Bull. Korean Math. Soc. 2018 Vol. 55, No. 5, 1333—1338
 Notes on minimal unit Killing vector fields Sun Hyang Chun, JeongHyeong Park, Kouei Sekigawa MSC numbers : Primary 53C25; Secondary 53D10 Bull. Korean Math. Soc. 2018 Vol. 55, No. 5, 1339—1350
 Polynomially demicompact operators and spectral theory for operator matrices involving demicompactness classes Fatma Ben Brahim, Aref Jeribi, Bilel Krichen MSC numbers : 47A53, 47A55, 47A10 Bull. Korean Math. Soc. 2018 Vol. 55, No. 5, 1351—1370
 The classification of self-dual codes over Galois rings of length 4 Whan-Hyuk Choi MSC numbers : 94B05 Bull. Korean Math. Soc. 2018 Vol. 55, No. 5, 1371—1387
 Units, nilpotent elements, and unit-IFP rings Sangwon Park, Sang Jo Yun MSC numbers : 16U60, 16U80, 16N40 Bull. Korean Math. Soc. 2018 Vol. 55, No. 5, 1389—1396
 The range of $r$-maximum index of graphs Jeong-Ok Choi MSC numbers : 05C15 Bull. Korean Math. Soc. 2018 Vol. 55, No. 5, 1397—1404
 Different volume computational methods of graph polytopes Hyeong-Kwan Ju, Sangwook Kim, Daeseok Lee MSC numbers : 05C22, 52B05 Bull. Korean Math. Soc. 2018 Vol. 55, No. 5, 1405—1417
 Bi-Lipschitz property and distortion theorems for planar harmonic mappings with $M$-linearly connected holomorphic part Jie Huang, Jian-Feng Zhu MSC numbers : Primary 30C62; Secondary 30C20, 30F15 Bull. Korean Math. Soc. 2018 Vol. 55, No. 5, 1419—1431
 Polarity of cohomogeneity two actions on negatively curved space forms Mojtaba Heidari, Reza Mirzaie MSC numbers : 53C30, 57S25 Bull. Korean Math. Soc. 2018 Vol. 55, No. 5, 1433—1440
 Existence of solutions for fractional $p\&q$-Kirchhoff system in unbounded domain Jinfeng Bao, Caisheng Chen MSC numbers : Primary 35R11, 35A15, 35J60, 47G20 Bull. Korean Math. Soc. 2018 Vol. 55, No. 5, 1441—1462
 A note on the generalized heat content for L\'{e}vy processes Wojciech Cygan, Tomasz Grzywny MSC numbers : 60G51, 60J75, 35K05 Bull. Korean Math. Soc. 2018 Vol. 55, No. 5, 1463—1481
 On the Lu Qi-Keng problem for slice monogenic functions Zhenghua Xu MSC numbers : 30G35, 32A25 Bull. Korean Math. Soc. 2018 Vol. 55, No. 5, 1483—1490
 On certain multiples of Littlewood and Newman polynomials Paulius Drungilas, Jonas Jankauskas, Grintas Junevicius, Lukas Klebonas, Jonas Siurys MSC numbers : 11R09, 11Y16, 12D05, 11R06 Bull. Korean Math. Soc. 2018 Vol. 55, No. 5, 1491—1501
 Modified subgradient extragradient algorithm for pseudomonotone equilibrium problems Dang Van Hieu MSC numbers : Primary 90C33, 47J20 Bull. Korean Math. Soc. 2018 Vol. 55, No. 5, 1503—1521
 On the matching number and the independence number of a random induced subhypergraph of a hypergraph Sang June Lee MSC numbers : 05C70, 05C69, 05C65 Bull. Korean Math. Soc. 2018 Vol. 55, No. 5, 1523—1528
 Certain difference polynomials and shared values Xiao-Min Li, Hui Yu MSC numbers : Primary 30D35; Secondary 39A05 Bull. Korean Math. Soc. 2018 Vol. 55, No. 5, 1529—1561
 On characterizing the gamma and the beta $q$-distributions Imen Boutouria, Imed Bouzida, Afif Masmoudi MSC numbers : 60A05, 33E20 Bull. Korean Math. Soc. 2018 Vol. 55, No. 5, 1563—1575
 Uniqueness of solutions of a certain nonlinear elliptic equation on Riemannian manifolds Yong Hah Lee MSC numbers : 58J05, 31B05 Bull. Korean Math. Soc. 2018 Vol. 55, No. 5, 1577—1586
 Beyond the cactus rank of tensors Edoardo Ballico MSC numbers : 14N05, 15A69 Bull. Korean Math. Soc. 2018 Vol. 55, No. 5, 1587—1598
 On classical solutions and the classical limit of the Vlasov-Darwin system Xiuting Li, Jiamu Sun MSC numbers : Primary 35L60, 35Q83, 82D10, 85A05 Bull. Korean Math. Soc. 2018 Vol. 55, No. 5, 1599—1619
 Holomorphic derivatives of Siegel modular forms Eric Hofmann, Winfried Kohnen MSC numbers : 11F46, 70G45 Bull. Korean Math. Soc. 2018 Vol. 55, No. 5, 1621—1625