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Author: Song, Seok-Zun

• Cheon, Gi-Sang; Song, Seok-Zun: A conjecture on minimum permanents. (English). Czechoslovak Mathematical Journal, vol. 74 (2024), issue 1, pp. 273-282
• Beasley, LeRoy B.; Jun, Young Bae; Song, Seok-Zun: Possible isolation number of a matrix over nonnegative integers. (English). Czechoslovak Mathematical Journal, vol. 68 (2018), issue 4, pp. 1055-1066
• Beasley, LeRoy B.; Song, Seok-Zun; Jun, Young Bae: Linear operators that preserve graphical properties of matrices: isolation numbers. (English). Czechoslovak Mathematical Journal, vol. 64 (2014), issue 3, pp. 819-826
• Beasley, LeRoy B.; Song, Seok-Zun: Linear operators that preserve Boolean rank of Boolean matrices. (English). Czechoslovak Mathematical Journal, vol. 63 (2013), issue 2, pp. 435-440
• Kang, Kyung-Tae; Song, Seok-Zun: Linear maps that strongly preserve regular matrices over the Boolean algebra. (English). Czechoslovak Mathematical Journal, vol. 61 (2011), issue 1, pp. 113-125
• Song, Seok-Zun; Park, Kwon-Ryong: Extreme preservers of maximal column rank inequalities of matrix sums over semirings. (English). Czechoslovak Mathematical Journal, vol. 58 (2008), issue 3, pp. 693-703
• Song, Seok-Zun; Kang, Kyung-Tae; Jun, Young-Bae: Invertible commutativity preservers of matrices over max algebra. (English). Czechoslovak Mathematical Journal, vol. 56 (2006), issue 4, pp. 1185-1192
• Song, Seok-Zun; Kang, Kyung-Tae; Jun, Young-Bae: Perimeter preserver of matrices over semifields. (English). Czechoslovak Mathematical Journal, vol. 56 (2006), issue 2, pp. 515-524
• Song, Seok-Zun; Kang, Kyung-Tae; Yi, Sucheol: Perimeter preservers of nonnegative integer matrices. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 45 (2004), issue 1, pp. 9-15
• Beasley, LeRoy B.; Jun, Young-Bae; Song, Seok-Zun: Zero-term ranks of real matrices and their preservers. (English). Czechoslovak Mathematical Journal, vol. 54 (2004), issue 1, pp. 183-188