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 Bull. Korean Math. Soc. 2013 Vol. 50, No. 4, 1061—1413Download front and back covers
 Surfaces of revolution satisfying $\Delta ^{II}\mathbf{G}=f(\mathbf{G}+C)$ Chahrazede Baba-Hamed and Mohammed Bekkar MSC numbers : 53A05, 53B25, 53C40 Bull. Korean Math. Soc. 2013 Vol. 50, No. 4, 1061—1067
 Some algebraic and topological properties of the nonabelian tensor product Daniele Ettore Otera, Francesco G. Russo, and Corrado Tanasi MSC numbers : Primary 20J99; Secondary 57M50 Bull. Korean Math. Soc. 2013 Vol. 50, No. 4, 1069—1077
 BSDEs on finite and infinite time horizon with discontinuous coefficients Pengju Duan and Yong Ren MSC numbers : primary 60H10, 60H30, 60H99 Bull. Korean Math. Soc. 2013 Vol. 50, No. 4, 1079—1086
 Melting of the Euclidean metric to negative scalar curvature Jongsu Kim MSC numbers : 53B20, 53C20, 53C21 Bull. Korean Math. Soc. 2013 Vol. 50, No. 4, 1087—1098
 Mannheim curves in 3-dimensional space forms Jin Ho Choi, Tae Ho Kang, and Young Ho Kim MSC numbers : Primary 53A04, 53A35 Bull. Korean Math. Soc. 2013 Vol. 50, No. 4, 1099—1108
 Bertrand curves in non-flat 3-dimensional (Riemannian or Lorentzian) space forms Pascual Lucas and Jose Antonio Ortega-Yagues MSC numbers : 53C50, 53B25, 53B30 Bull. Korean Math. Soc. 2013 Vol. 50, No. 4, 1109—1126
 Error estimates of mixed finite element approximations for a class of fourth order elliptic control problems Tianliang Hou MSC numbers : 49J20, 65N30 Bull. Korean Math. Soc. 2013 Vol. 50, No. 4, 1127—1144
 On statistical approximation properties of modified $q$-Bernstein-Schurer Operators Mei-Ying Ren and Xiao-Ming Zeng MSC numbers : Primary 41A10, 41A25; Secondary 41A36 Bull. Korean Math. Soc. 2013 Vol. 50, No. 4, 1145—1156
 Value distribution and uniqueness on $q$-differences of meromorphic functions Zhi-Bo Huang MSC numbers : 30D35, 39A10 Bull. Korean Math. Soc. 2013 Vol. 50, No. 4, 1157—1171
 $GCR$-lightlike submanifolds of indefinite nearly Kaehler manifolds Sangeet Kumar, Rakesh Kumar, and R. K. Nagaich MSC numbers : 53C15, 53C40, 53C50 Bull. Korean Math. Soc. 2013 Vol. 50, No. 4, 1173—1192
 Invariant rings and representations of symmetric groups Shotaro Kudo MSC numbers : Primary 55R35; Secondary 13A50, 55P60 Bull. Korean Math. Soc. 2013 Vol. 50, No. 4, 1193—1200
 Structure of stable minimal hypersurfaces in a Riemannian manifold of nonnegative Ricci curvature Jeong-Jin Kim and Gabjin Yun MSC numbers : 53C21 Bull. Korean Math. Soc. 2013 Vol. 50, No. 4, 1201—1207
 A note on the hyper-order of entire functions Feng Lu and Jianming Qi MSC numbers : 30D35, 30D45 Bull. Korean Math. Soc. 2013 Vol. 50, No. 4, 1209—1219
 On some modular equations and their applications II Dae Hyun Paek and Jinhee Yi MSC numbers : Primary 11F27, 33C90; Secondary 11F20, 33C05, 33C75 Bull. Korean Math. Soc. 2013 Vol. 50, No. 4, 1221—1233
 On constant mean curvature graphs with convex boundary Sung-Ho Park MSC numbers : 53A10, 35J25 Bull. Korean Math. Soc. 2013 Vol. 50, No. 4, 1235—1242
 On some behavior of integral points on a hyperbola Yeonok Kim MSC numbers : 17B67, 17B65, 11B39 Bull. Korean Math. Soc. 2013 Vol. 50, No. 4, 1243—1259
 Curvature identities derived from an integral formula for the first Chern number Jungchan Lee, JeongHyeong Park, and Kouei Sekigawa MSC numbers : 53B20, 53C20 Bull. Korean Math. Soc. 2013 Vol. 50, No. 4, 1261—1275
 Lipschitz type characterizations of harmonic Bergman spaces Kyesook Nam MSC numbers : Primary 31B05; Secondary 31B10, 30H20 Bull. Korean Math. Soc. 2013 Vol. 50, No. 4, 1277—1288
 Some identities on the Bernstein and $q$-Genocchi polynomials Hyun-Mee Kim MSC numbers : 11S80, 11B68 Bull. Korean Math. Soc. 2013 Vol. 50, No. 4, 1289—1296
 Finiteness of mapping class groups Sungbok Hong and Jin Yang MSC numbers : Primary 57M99 Bull. Korean Math. Soc. 2013 Vol. 50, No. 4, 1297—1302
 Injectively Delta choosable graphs Seog-Jin Kim and Won-Jin Park MSC numbers : Primary 05C15 Bull. Korean Math. Soc. 2013 Vol. 50, No. 4, 1303—1314
 On some modular equations of degree 5 and their applications Dae Hyun Paek and Jinhee Yi MSC numbers : Primary 11F27, 33C90; Secondary 11F20, 33C05, 33C75 Bull. Korean Math. Soc. 2013 Vol. 50, No. 4, 1315—1328
 Some translation surfaces in the 3-dimensional Heisenberg group Dae Won Yoon, Chul Woo Lee, and Murat Kemal Karacan MSC numbers : 53B25 Bull. Korean Math. Soc. 2013 Vol. 50, No. 4, 1329—1343
 Classifications of helicoidal surfaces with $L_1$-pointwise 1-type Gauss map Young Ho Kim and Nurettin Cenk Turgay MSC numbers : 53B25, 53C40 Bull. Korean Math. Soc. 2013 Vol. 50, No. 4, 1345—1356
 Class number divisibility of quadratic function fields in even characteristic Sunghan Bae and Hwanyup Jung MSC numbers : 11R18, 11R29, 11R58 Bull. Korean Math. Soc. 2013 Vol. 50, No. 4, 1357—1365
 Einstein lightlike hypersurfaces of a Lorentz space form with a semi-symmetric non-metric connection Dae Ho Jin MSC numbers : Primary 53C25, 53C40, 53C50 Bull. Korean Math. Soc. 2013 Vol. 50, No. 4, 1367—1376
 Quasiconformal extensions of starlike harmonic mappings in the unit disc Hidetaka Hamada, Tatsuhiro Honda, and Kwang Ho Shon MSC numbers : Primary 30C62, 30C45 Bull. Korean Math. Soc. 2013 Vol. 50, No. 4, 1377—1387
 Convolution sums and their relations to Eisenstein series Daeyeoul Kim, Aeran Kim, and Ayyadurai Sankaranarayanan MSC numbers : Primary 33E05, 11A25, 11B65; Secondary 11Y35, 11Y70 Bull. Korean Math. Soc. 2013 Vol. 50, No. 4, 1389—1413