Beasley, Leroy B.; Kang, Kyung-Tae; Song, Seok-Zun Isolation numbers of integer matrices and their preservers. (English) Zbl 1450.15003 Bull. Korean Math. Soc. 57, No. 3, 535-545 (2020). Reviewer: Janko Marovt (Maribor) MSC: 15A04 15A86 15B36 PDFBibTeX XMLCite \textit{L. B. Beasley} et al., Bull. Korean Math. Soc. 57, No. 3, 535--545 (2020; Zbl 1450.15003) Full Text: DOI
Song, Seok-Zun; Kang, Kyung-Tae; Kang, Mun-Hwan Boolean regular matrices and their strongly preservers. (English) Zbl 1167.15004 Bull. Korean Math. Soc. 46, No. 2, 373-385 (2009). Reviewer: Bojan Kuzma (Ljubljana) MSC: 15A04 15A09 15B33 06E25 PDFBibTeX XMLCite \textit{S.-Z. Song} et al., Bull. Korean Math. Soc. 46, No. 2, 373--385 (2009; Zbl 1167.15004) Full Text: DOI
Song, Seok-Zun; Kang, Kyung-Tae; Shin, Hang Kyun Linear operators that preserve perimeters of Boolean matrices. (English) Zbl 1154.15003 Bull. Korean Math. Soc. 45, No. 2, 355-363 (2008). Reviewer: Bojan Kuzma (Ljubljana) MSC: 15A04 15A03 15B36 PDFBibTeX XMLCite \textit{S.-Z. Song} et al., Bull. Korean Math. Soc. 45, No. 2, 355--363 (2008; Zbl 1154.15003) Full Text: DOI
Jun, Young Bae; Song, Seok Zun Fuzzy set theory applied to implicative ideals in BCK-algebras. (English) Zbl 1116.06017 Bull. Korean Math. Soc. 43, No. 3, 461-470 (2006). MSC: 06F35 06D10 PDFBibTeX XMLCite \textit{Y. B. Jun} and \textit{S. Z. Song}, Bull. Korean Math. Soc. 43, No. 3, 461--470 (2006; Zbl 1116.06017) Full Text: DOI
Song, Seok-Zun; Kang, Kyung-Tae; Jun, Young-Bae Rank preserver of Boolean matrices. (English) Zbl 1082.15003 Bull. Korean Math. Soc. 42, No. 3, 501-507 (2005). Reviewer: Bojan Kuzma (Ljubljana) MSC: 15A04 15A23 15A03 15B36 PDFBibTeX XMLCite \textit{S.-Z. Song} et al., Bull. Korean Math. Soc. 42, No. 3, 501--507 (2005; Zbl 1082.15003) Full Text: DOI
Song, Seok-Zun; Hong, Sung-Min; Jun, Young-Bae; Kim, Seon-Jeong Linear operators that preserve Boolean ranks. (English) Zbl 0929.15003 Bull. Korean Math. Soc. 36, No. 1, 131-138 (1999). Reviewer: G.Bonanno (Davis) MSC: 15A03 15A04 PDFBibTeX XMLCite \textit{S.-Z. Song} et al., Bull. Korean Math. Soc. 36, No. 1, 131--138 (1999; Zbl 0929.15003)
Lee, G.-Y.; Lee, S.-G.; Song, S.-Z. Linear operators that strongly preserve the sign-central matrices. (English) Zbl 0945.15001 Bull. Korean Math. Soc. 34, No. 1, 51-61 (1997). Reviewer: M.Kleiner (Syracuse) MSC: 15A03 15A04 15A23 PDFBibTeX XMLCite \textit{G. Y. Lee} et al., Bull. Korean Math. Soc. 34, No. 1, 51--61 (1997; Zbl 0945.15001)
Hwang, Suk-Geun; Kim, Si-Ju; Song, Seok-Zun A note on extremal convertible matrices. (English) Zbl 0871.15006 Bull. Korean Math. Soc. 33, No. 2, 295-302 (1996). Reviewer: J.D.Dixon (Ottawa) MSC: 15A15 15B36 05B20 PDFBibTeX XMLCite \textit{S.-G. Hwang} et al., Bull. Korean Math. Soc. 33, No. 2, 295--302 (1996; Zbl 0871.15006)
Hong, Sung-Min; Jun, Young-Bae; Kim, Seon-Jeong; Song, Seok-Zun A cohesive matrix in a conjecture on permanents. (English) Zbl 0858.15002 Bull. Korean Math. Soc. 33, No. 1, 127-133 (1996). Reviewer: J.M.Day (San José) MSC: 15A15 15B51 PDFBibTeX XMLCite \textit{S.-M. Hong} et al., Bull. Korean Math. Soc. 33, No. 1, 127--133 (1996; Zbl 0858.15002)
Song, Seok-Zun On spanning column rank of matrices over semirings. (English) Zbl 0838.15001 Bull. Korean Math. Soc. 32, No. 2, 337-342 (1995). Reviewer: W.Wiȩsław (Wrocław) MSC: 15A03 15B33 PDFBibTeX XMLCite \textit{S.-Z. Song}, Bull. Korean Math. Soc. 32, No. 2, 337--342 (1995; Zbl 0838.15001)
Song, Seok-Zun On the minimum values and monotonicity of permanent functions. (English) Zbl 0675.15009 Bull. Korean Math. Soc. 26, No. 1, 95 (1989). MSC: 15B51 15A15 PDFBibTeX XMLCite \textit{S.-Z. Song}, Bull. Korean Math. Soc. 26, No. 1, 95 (1989; Zbl 0675.15009)
Song, Seok-Zun Minimum permanents on certain faces of the polytope of doubly stochastic matrices. (English) Zbl 0652.15019 Bull. Korean Math. Soc. 25, No. 1, 35-49 (1988). Reviewer: R.Sinkhorn MSC: 15B51 15A15 PDFBibTeX XMLCite \textit{S.-Z. Song}, Bull. Korean Math. Soc. 25, No. 1, 35--49 (1988; Zbl 0652.15019)