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 Bull. Korean Math. Soc. 2021 Vol. 58, No. 1, 1—267Download front and back covers
 Zero mean curvature surfaces in isotropic three-space Jin Ju Seo, Seong-Deog Yang MSC numbers : 53A35, 53B30 Bull. Korean Math. Soc. 2021 Vol. 58, No. 1, 1—20
 Symmetry and uniqueness of embedded minimal hypersurfaces in $\mathbb R^{n+1}$ Sung-Ho Park MSC numbers : Primary 53A10, 53C24 Bull. Korean Math. Soc. 2021 Vol. 58, No. 1, 21—30
 Sharp conditions for the existence of an even $[a,b]$-factor in a graph Eun-Kyung Cho, Jong Yoon Hyun, Suil O, Jeong Rye Park MSC numbers : Primary 05C70, 05C40, 05C50 Bull. Korean Math. Soc. 2021 Vol. 58, No. 1, 31—46
 Rings in which every element is a sum of a nilpotent and three tripotents Jian Cui, Guoli Xia MSC numbers : Primary 16S34, 16U99 Bull. Korean Math. Soc. 2021 Vol. 58, No. 1, 47—58
 Inequalities of operator valued quantum skew information Byoung Jin Choi, Mi Ra Lee MSC numbers : Primary 94A17, 81P45 Bull. Korean Math. Soc. 2021 Vol. 58, No. 1, 59—70
 Spectral analysis for the class of integral operators arising from well-posed boundary value problems of finite beam deflection on elastic foundation: characteristic equation Sung Woo Choi MSC numbers : 34B09, 47G10, 74K10 Bull. Korean Math. Soc. 2021 Vol. 58, No. 1, 71—111
 On divisors computing mld's and lct's Harold Blum MSC numbers : 14B05 Bull. Korean Math. Soc. 2021 Vol. 58, No. 1, 113—132
 Continuous orbit equivalences on self-similar groups Inhyeop Yi MSC numbers : 37B05, 37A20, 37C85, 20M30, 46L35 Bull. Korean Math. Soc. 2021 Vol. 58, No. 1, 133—146
 Sa-supplement submodules Y{\i}lmaz Dur\u{g}un MSC numbers : Primary 16D10, 18G25 Bull. Korean Math. Soc. 2021 Vol. 58, No. 1, 147—161
 A proof of the conjecture of Mazur-Rubin-Stein Hae-Sang Sun MSC numbers : 11F67 Bull. Korean Math. Soc. 2021 Vol. 58, No. 1, 163—170
 On the fixing number of functigraphs Muhammad Fazil, Imran Javaid, Muhammad Murtaza MSC numbers : 05C25 Bull. Korean Math. Soc. 2021 Vol. 58, No. 1, 171—181
 Semibricks over split-by-nilpotent extensions Hanpeng Gao MSC numbers : Primary 16G20, 16S90 Bull. Korean Math. Soc. 2021 Vol. 58, No. 1, 183—193
 Graded uniformly $pr$-ideals Rashid Abu-Dawwas, Mashhoor Refai MSC numbers : Primary 13A02, 16W50 Bull. Korean Math. Soc. 2021 Vol. 58, No. 1, 195—204
 Weighted norm estimates for the dyadic paraproduct with VMO function Daewon Chung MSC numbers : Primary 42B20, 42B25; Secondary 47B38 Bull. Korean Math. Soc. 2021 Vol. 58, No. 1, 205—215
 Ding injective modules over Frobenius extensions Zhanping Wang, Pengfei Yang, Ruijie Zhang MSC numbers : Primary 13B02, 16G50, 18G25 Bull. Korean Math. Soc. 2021 Vol. 58, No. 1, 217—224
 Subpermutable subgroups of skew linear groups and unit groups of real group algebras Le Qui Danh, Nguyen Trung Nghia, Nguyen Kim Ngoc MSC numbers : 16K20, 20B99 Bull. Korean Math. Soc. 2021 Vol. 58, No. 1, 225—234
 Estimates for the higher order Riesz transforms related to Schr\"odinger type operators Yanhui Wang MSC numbers : Primary 35J10, 42B35 Bull. Korean Math. Soc. 2021 Vol. 58, No. 1, 235—251
 Linearly dependent and concise subsets of a Segre variety depending on $k$ factors Edoardo Ballico MSC numbers : Primary 14N07, 14N05, 12E99, 12F99 Bull. Korean Math. Soc. 2021 Vol. 58, No. 1, 253—267