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On a question of P. R. Halmos, Linear and Multilinear Algebra 39 (1995), no.3, 255--258
Computing the extremal positive definite solutions of a matrix equation, SIAM J. Sci. Comput. 17 (1996), no. 5, 1167--1174
(with J. Xie) On the matrix equation X+A^TX^{-1}A=I, Linear Algebra Appl. 247 (1996), 337--345
Inequalities for the singular values of Hadamard products, SIAM J. Matrix Anal. Appl. 18 (1997), no. 4, 1093--1095
(with E. Jiang) Lower bounds for the spread of a Hermitian matrix, Linear Algebra Appl. 256 (1997), 153--163
Inequalities involving Hadamard products and unitarily invariant norms, Adv. in Math. (China) 27 (1998), no. 5, 416--422
Inequalities for unitarily invariant norms, SIAM J. Matrix Anal. Appl. 20 (1998), no. 2, 466--470
(with T. Ando) Norm inequalities related to operator monotone functions, Math. Ann. 315 (1999), no. 4, 771--780
(with R. A. Horn) Inequalities for C-S seminorms and Lieb functions, Linear Algebra Appl. 291 (1999), 103--113
Norm inequalities for Cartesian decompositions, Singular values of differences of positive semidefinite matrices, SIAM J. Matrix Anal. Appl. 22 (2000), no.3, 819--823
Some research problems on the Hadamard product and singular values of matrices, Linear and Multilinear Algebra 47 (2000), no.2, 191--194
(with R. Bhatia) Compact operators whose real and imaginary parts are positive, Proc. Amer. Math. Soc. 129 (2001), no.8, 2277--2281
Linear preservers that permute the entries of a matrix, Amer. Math. Monthly 108 (2001), no.7, 643--645
Span of the orthogonal orbit of real matrices, Linear and Multilinear Algebra 49 (2001), 337--346
(with F. Ding) On the unitary orbit of complex matrices, SIAM J. Matrix Anal. Appl. 23 (2001) no.2, 511--516
(with F. Hiai) Inequalities involving unitarily invariant norms and operator monotone functions, Linear Algebra Appl. 341(2002), 151--169
The sharp Rado theorem for majorizations, Amer. Math. Monthly 110(2003), 152--153
(with R. Bhatia) Norm inequalities for operators with positive real part, J. Operator Theory 50(2003), 67--76
On some matrix inequalities, Linear Algebra Appl. 376(2004), 299--303
(with F. Hiai) Submultiplicativity vs subadditivity for unitarily invariant norms, Linear Algebra Appl. 377(2004), 155--164
On singular numbers of tau-measurable operators, J. of Shanghai University, Special issue dedicated to the 70th birthday of Professor Erxiong Jiang, 8(2004), no.4, 444--447
(with Q. Hu and Y. Li) Possible numbers of ones in 0-1 matrices with a given rank, Linear and Multilinear Algebra 53(2005), no.6, 435--443
Formulae for sums of consecutive square roots, Math. Intelligencer 27(2005), no.4, 4--5
Extremal eigenvalues of real symmetric matrices with entries in an interval , SIAM J. Matrix Anal. Appl. 27(2006), no. 3, 851--860
Completion of a partial integral matrix to a unimodular matrix, Linear Algebra Appl. 414(2006), 373--377
(with L. Qiu) On the span of Hadamard products of vectors, Linear Algebra Appl. 422(2007), 304--307
Extremal numbers of positive entries of imprimitive nonnegative matrices, Linear Algebra Appl. 424(2007), 132--138
Open problems in matrix theory, in Proceedings of the 4th International Congress of Chinese Mathematicians, Vol. I, edited by L. Ji, K. Liu, L. Yang and S.-T. Yau, Higher Education Press, Beijing, 2008, 367--382
(with R.A. Brualdi and P. Pei) An extremal sparsity property of the Jordan canonical form, Linear Algebra Appl. 429(2008), 2367--2372
(with R.A. Brualdi and Z. Huang) Singular, nonsingular, and bounded rank completions of ACI-matrices, Linear Algebra Appl. 433(2010), 1452--1462
(with Z. Huang) Digraphs that have at most one walk of a given length with the same endpoints, Discrete Math., 311(2011), 70--79.
(with Z. Huang) ACI-matrices all of whose completions have the same rank, Linear Algebra Appl., 434 (2011), 1956--1967.
(with Z. Huang) Extremal digraphs whose walks with the same initial and terminal vertices have distinct lengths, Discrete Math., 312(2012), 2203--2213.
(with Z. Huang) Partial matrices all of whose completions have the same spectrum, Linear Algebra Appl., 436(2012), 3061--3064.
(with C. Ma) Extremal sparsity of the companion matrix of a polynomial, Linear Algebra Appl., 438(2013), 621--625.
(with C. Ma) Inverse invariant zero–nonzero patterns, Linear Algebra Appl., 443(2014), 184--190.
(with Z. Huang) Nonsymmetric normal entry patterns with the maximum number of distinct indeterminates, Linear Algebra Appl., 485(2015), 359--371.
(with S. Kirkland and P. Qiao) Algebraically positive matrices, Linear Algebra Appl., 504(2016), 14--26.
(with P. Qiao) On vertex types of graphs, Graph Combin., 34(2018), 889--900.
(with P. Qiao) The maximum girth and minimum circumference of graphs with prescribed radius and diameter, Discrete Math., 341(2018), 2827--2830.
(with P. Qiao) The largest graphs with given order and diameter: A simple proof, Graphs Combin., 35(2019), 1715--1716.
(with P. Qiao) The minimum number of Hamilton cycles in a hamiltonian threshold graph of a prescribed order, J. Graph Theory, 93(2020), 222--229.
(with P. Qiao) Pairs of a tree and a nontree graph with the same status sequence, Discrete Math., 343(2020), no.2, article number 111662.
(with P. Qiao) The diameter and radius of radially maximal graphs, Bull. Aust. Math. Soc., 104(2021), no.2, 196-202.
(with Y. Hu) Possible cardinalities of the center of a graph, Bull. Malays. Math. Soc., 44(2021), no.6, 3629-3636.
(with P. Qiao) On a problem of Erdos about graphs whose size is the Turan number plus one,, Bull. Aust. Math. Soc., 105(2022), no.2, 177-187.
(with Y. Hu) Regular homogeneously traceable nonhamiltonian graphs,, Discrete Appl. Math., 310(2022), 60-64.
(with P. Vrana and L. Zhang) Every 3-connected claw-free graph with domination number at most 3 is hamiltonian-connected,, Discrete Math., 345(2022), no.8, Paper No. 112909.
(with P. Qiao) The relation between the number of leaves of a tree and its diameter,, Czechoslovak Math. J., 72(2022), no.2, 365-369.
The maximum degree of a minimally hamiltonian-connected graph,, Discrete Math., 345(2022), no.12, Paper No. 113159.
(with Y. Hu) On almost self-centered graphs and almost peripheral graphs,, Taiwanese J. Math., 26(2022), no.5, 887-901.
(with L. Zhang) The maximum size of a nonhamiltonian graph with given order and connectivity,, Discrete Math., 346(2023), no.1, Paper No. 113208.
(with Y. Hu) On the metric subgraphs of a graph, arXiv 2112.10395, 20 December 2021
(with P. Qiao) Two-degree trees, to appear in J. of East China Normal Univ. (Natural Sciences)
(with J. Yan) The Turan number of book graphs, arxiv: 2010.09973v2, 25 April 2021
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