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## Hwang, In Sung

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 Author ID: hwang.in-sung Published as: Hwang, I. S.; Hwang, In Sung
 Documents Indexed: 42 Publications since 1998, including 1 Book
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#### Co-Authors

 2 single-authored 27 Lee, Woo Young 8 Curto, Raúl Enrique 6 Kim, An-Hyun 5 Lee, Jun Ik 4 Kang, Dong-Oh 3 Kim, In Hyoun 2 Gu, Caixing 1 Chō, Muneo 1 Im, Sung Mo 1 Kim, Sumin 1 Lee, Sanghan 1 Park, Sewon
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#### Serials

 6 Journal of Mathematical Analysis and Applications 5 Integral Equations and Operator Theory 3 Operators and Matrices 2 Advances in Mathematics 2 Archiv der Mathematik 2 Journal of Functional Analysis 2 Journal of the Korean Mathematical Society 2 Mathematische Annalen 2 Mathematische Nachrichten 2 Journal of Inequalities and Applications 2 Journal of Physics A: Mathematical and Theoretical 1 Linear and Multilinear Algebra 1 Glasgow Mathematical Journal 1 Mathematische Zeitschrift 1 Memoirs of the American Mathematical Society 1 Transactions of the American Mathematical Society 1 Journal of Operator Theory 1 Bulletin of the Korean Mathematical Society 1 Mathematical Inequalities & Applications 1 RIMS Kokyuroku 1 Complex Analysis and Operator Theory
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#### Fields

 40 Operator theory (47-XX) 10 Functions of a complex variable (30-XX) 7 Functional analysis (46-XX) 3 Harmonic analysis on Euclidean spaces (42-XX) 2 Linear and multilinear algebra; matrix theory (15-XX) 1 Several complex variables and analytic spaces (32-XX) 1 Difference and functional equations (39-XX) 1 Abstract harmonic analysis (43-XX) 1 Integral equations (45-XX)

#### Citations contained in zbMATH

29 Publications have been cited 252 times in 159 Documents Cited by Year
Quartic functional equations. Zbl 1072.39024
Lee, Sang Han; Im, Sung Mo; Hwang, In Sung
2005
The boundedness below of $$2\times 2$$ upper triangular operator matrices. Zbl 0986.47004
Hwang, In Sung; Lee, Woo Young
2001
Hyponormality and subnormality of block Toeplitz operators. Zbl 1248.47029
Curto, Raúl E.; Hwang, In Sung; Lee, Woo Young
2012
Hyponormality of trigonometric Toeplitz operators. Zbl 1011.47023
Hwang, In Sung; Lee, Woo Young
2002
Hyponormality of Toeplitz operators with polynomial symbols. Zbl 0927.47018
Hwang, In Sung; Kim, In Hyoun; Lee, Woo Young
1999
Hyponormal Toeplitz operators on the Bergman space. Zbl 1085.47027
Hwang, In Sung
2005
The spectrum is continuous on the set of $$p$$-hyponormal operators. Zbl 0963.47002
Hwang, In Sung; Lee, Woo Young
2000
Which subnormal Toeplitz operators are either normal or analytic? Zbl 1263.47033
Curto, Raúl E.; Hwang, In Sung; Lee, Woo Young
2012
Hyponormal Toeplitz operators with rational symbols. Zbl 1122.47023
Hwang, In Sung; Lee, Woo Young
2006
Hyponormality of Toeplitz operators with rational symbols. Zbl 1129.47025
Hwang, In Sung; Lee, Woo Young
2006
Subnormal and quasinormal Toeplitz operators with matrix-valued rational symbols. Zbl 1318.47031
Curto, Raúl E.; Hwang, In Sung; Kang, Dong-O; Lee, Woo Young
2014
Hyponormality of Toeplitz operators with polynomial symbols: An extremal case. Zbl 1016.47024
Hwang, In Sung; Kim, In Hyoun; Lee, Woo Young
2001
Hyponormal Toeplitz operators on the weighted Bergman spaces. Zbl 1269.47021
Hwang, In Sung; Lee, Jongrak
2012
Block Toeplitz operators with rational symbols. Zbl 1135.47024
Hwang, In Sung; Lee, Woo Young
2008
A gap between hyponormality and subnormality for block Toeplitz operators. Zbl 1221.47052
Hwang, In Sung; Kang, Dong-O; Lee, Woo Young
2011
Joint hyponormality of rational Toeplitz pairs. Zbl 1207.47019
Hwang, In Sung; Lee, Woo Young
2009
Hyponormality of Toeplitz operators on the Bergman space. Zbl 1163.47017
Hwang, In Sung
2008
On the continuity of spectra of Toeplitz operators. Zbl 0910.47021
Hwang, In Sung; Lee, Woo Young
1998
Hyponormal Toeplitz operators with polynomial symbols on weighted Bergman spaces. Zbl 1447.47032
Hwang, In Sung; Lee, Jongrak; Park, Se Won
2014
Block Toeplitz operators with rational symbols. II. Zbl 1351.47026
Hwang, In Sung; Lee, Woo Young
2008
Normal singular Cauchy integral operators with operator-valued symbols. Zbl 1356.47053
Gu, Caixing; Hwang, In Sung; Kang, Dong-O; Lee, Woo Young
2017
Hyponormal Toeplitz operators with matrix-valued circulant symbols. Zbl 1300.47038
Hwang, In Sung; Kang, Dong-O.; Lee, Woo Young
2013
Hyponormal Toeplitz operators on the Bergman space. II. Zbl 1137.47023
Hwang, In Sung; Lee, Jongrak
2007
Hyponormality of Toeplitz operators with polynomial and symmetric-type symbols. Zbl 1087.47027
Hwang, In Sung; Lee, Woo Young
2004
Weak subnormality of operators. Zbl 1022.47013
Curto, Raúl E.; Hwang, In Sung; Lee, Woo Young
2002
Hyponormality of bounded-type Toeplitz operators. Zbl 1318.47032
Curto, Raúl E.; Hwang, In Sung; Lee, Woo Young
2014
Erratum to: Joint hyponormality of rational Toeplitz pairs. Zbl 1213.47023
Hwang, In Sung; Lee, Woo Young
2011
Hyponormality of Toeplitz operators with generalized circulant symbols. Zbl 1154.47021
Hwang, In Sung; Kim, In Hyoun
2009
On spectral properties of log-hyponormal operators. Zbl 0968.47514
Chō, Muneo; Hwang, In Sung; Lee, Jun Ik
2000
Normal singular Cauchy integral operators with operator-valued symbols. Zbl 1356.47053
Gu, Caixing; Hwang, In Sung; Kang, Dong-O; Lee, Woo Young
2017
Subnormal and quasinormal Toeplitz operators with matrix-valued rational symbols. Zbl 1318.47031
Curto, Raúl E.; Hwang, In Sung; Kang, Dong-O; Lee, Woo Young
2014
Hyponormal Toeplitz operators with polynomial symbols on weighted Bergman spaces. Zbl 1447.47032
Hwang, In Sung; Lee, Jongrak; Park, Se Won
2014
Hyponormality of bounded-type Toeplitz operators. Zbl 1318.47032
Curto, Raúl E.; Hwang, In Sung; Lee, Woo Young
2014
Hyponormal Toeplitz operators with matrix-valued circulant symbols. Zbl 1300.47038
Hwang, In Sung; Kang, Dong-O.; Lee, Woo Young
2013
Hyponormality and subnormality of block Toeplitz operators. Zbl 1248.47029
Curto, Raúl E.; Hwang, In Sung; Lee, Woo Young
2012
Which subnormal Toeplitz operators are either normal or analytic? Zbl 1263.47033
Curto, Raúl E.; Hwang, In Sung; Lee, Woo Young
2012
Hyponormal Toeplitz operators on the weighted Bergman spaces. Zbl 1269.47021
Hwang, In Sung; Lee, Jongrak
2012
A gap between hyponormality and subnormality for block Toeplitz operators. Zbl 1221.47052
Hwang, In Sung; Kang, Dong-O; Lee, Woo Young
2011
Erratum to: Joint hyponormality of rational Toeplitz pairs. Zbl 1213.47023
Hwang, In Sung; Lee, Woo Young
2011
Joint hyponormality of rational Toeplitz pairs. Zbl 1207.47019
Hwang, In Sung; Lee, Woo Young
2009
Hyponormality of Toeplitz operators with generalized circulant symbols. Zbl 1154.47021
Hwang, In Sung; Kim, In Hyoun
2009
Block Toeplitz operators with rational symbols. Zbl 1135.47024
Hwang, In Sung; Lee, Woo Young
2008
Hyponormality of Toeplitz operators on the Bergman space. Zbl 1163.47017
Hwang, In Sung
2008
Block Toeplitz operators with rational symbols. II. Zbl 1351.47026
Hwang, In Sung; Lee, Woo Young
2008
Hyponormal Toeplitz operators on the Bergman space. II. Zbl 1137.47023
Hwang, In Sung; Lee, Jongrak
2007
Hyponormal Toeplitz operators with rational symbols. Zbl 1122.47023
Hwang, In Sung; Lee, Woo Young
2006
Hyponormality of Toeplitz operators with rational symbols. Zbl 1129.47025
Hwang, In Sung; Lee, Woo Young
2006
Quartic functional equations. Zbl 1072.39024
Lee, Sang Han; Im, Sung Mo; Hwang, In Sung
2005
Hyponormal Toeplitz operators on the Bergman space. Zbl 1085.47027
Hwang, In Sung
2005
Hyponormality of Toeplitz operators with polynomial and symmetric-type symbols. Zbl 1087.47027
Hwang, In Sung; Lee, Woo Young
2004
Hyponormality of trigonometric Toeplitz operators. Zbl 1011.47023
Hwang, In Sung; Lee, Woo Young
2002
Weak subnormality of operators. Zbl 1022.47013
Curto, Raúl E.; Hwang, In Sung; Lee, Woo Young
2002
The boundedness below of $$2\times 2$$ upper triangular operator matrices. Zbl 0986.47004
Hwang, In Sung; Lee, Woo Young
2001
Hyponormality of Toeplitz operators with polynomial symbols: An extremal case. Zbl 1016.47024
Hwang, In Sung; Kim, In Hyoun; Lee, Woo Young
2001
The spectrum is continuous on the set of $$p$$-hyponormal operators. Zbl 0963.47002
Hwang, In Sung; Lee, Woo Young
2000
On spectral properties of log-hyponormal operators. Zbl 0968.47514
Chō, Muneo; Hwang, In Sung; Lee, Jun Ik
2000
Hyponormality of Toeplitz operators with polynomial symbols. Zbl 0927.47018
Hwang, In Sung; Kim, In Hyoun; Lee, Woo Young
1999
On the continuity of spectra of Toeplitz operators. Zbl 0910.47021
Hwang, In Sung; Lee, Woo Young
1998
all top 5