Xingzhi Zhan

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Open problems in matrix theory

Xingzhi Zhan, Xingzhi Zhan, 2007 .

Computing the Extremal Positive Definite Solutions of a Matrix Equation

Xingzhi Zhan, Xingzhi Zhan, 1996, SIAM J. Sci. Comput..

Inequalities for Unitarily Invariant Norms

Xingzhi Zhan, 1998, SIAM J. Matrix Anal. Appl..

Extremal Eigenvalues of Real Symmetric Matrices with Entries in an Interval

Xingzhi Zhan, Xingzhi Zhan, 2005, SIAM J. Matrix Anal. Appl..

Extremal digraphs whose walks with the same initial and terminal vertices have distinct lengths

Zejun Huang, Xingzhi Zhan, 2012, Discret. Math..

The minimum number of Hamilton cycles in a Hamiltonian threshold graph of a prescribed order

Pu Qiao, Xingzhi Zhan, Xingzhi Zhan, 2018, J. Graph Theory.

Singular Values of Differences of Positive Semidefinite Matrices

Xingzhi Zhan, Xingzhi Zhan, 2000, SIAM J. Matrix Anal. Appl..

On Vertex Types of Graphs

Pu Qiao, Xingzhi Zhan, 2018, Graphs Comb..

On the Unitary Orbit of Complex Matrices

Fan Ding, Xingzhi Zhan, 2001, SIAM J. Matrix Anal. Appl..

Linear Preservers that Permute the Entries of a Matrix

Xingzhi Zhan, Xingzhi Zhan, 2001, Am. Math. Mon..

The Largest Graphs with Given Order and Diameter: A Simple Proof

Pu Qiao, Xingzhi Zhan, 2019, Graphs Comb..

The maximum girth and minimum circumference of graphs with prescribed radius and diameter

Pu Qiao, Xingzhi Zhan, 2018, Discret. Math..

Digraphs that have at most one walk of a given length with the same endpoints

Zejun Huang, Xingzhi Zhan, 2011, Discret. Math..

The Sharp Rado Theorem for Majorizations

Xingzhi Zhan, 2003, Am. Math. Mon..

Relation between the number of leaves of a tree and its diameter

Pu Qiao, Xingzhi Zhan, Xingzhi Zhan, 2019, 1904.12150.

The maximum degree of a minimally hamiltonian-connected graph

Xingzhi Zhan, Xingzhi Zhan, 2022, Discret. Math..

Proof of a conjecture on hamiltonian-connected graphs

Xingzhi Zhan, Petr Vrana, Leilei Zhang, 2021, 2110.15519.

The maximum size of a nonhamiltonian graph with given order and connectivity

Xingzhi Zhan, Leilei Zhang, Xingzhi Zhan, 2021, Discret. Math..

Regular homogeneously traceable nonhamiltonian graphs

Xingzhi Zhan, Yanan Hu, 2022, Discrete Applied Mathematics.

On Almost Self-centered Graphs and Almost Peripheral Graphs

Xingzhi Zhan, Yanan Hu, Xingzhi Zhan, 2021, Taiwanese Journal of Mathematics.

On the metric subgraphs of a graph

Xingzhi Zhan, Yanan Hu, Xingzhi Zhan, 2021, Ars Mathematica Contemporanea.

Some research problems on the hadamard product and singular values of matrices

Xingzhi Zhan, Xingzhi Zhan, 2000 .

An extremal sparsity property of the Jordan canonical form

Richard A. Brualdi, Xingzhi Zhan, R. Brualdi, 2008 .

Completion of a partial integral matrix to a unimodular matrix

Xingzhi Zhan, Xingzhi Zhan, 2006 .

Pairs of a tree and a nontree graph with the same status sequence

Pu Qiao, Xingzhi Zhan, Xingzhi Zhan, 2019, Discret. Math..

On the matrix equation X + ATX−1A = I

Xingzhi Zhan, Jianjun Xie, Xingzhi Zhan, 1996 .

Formulae for sums of consecutive square roots

Xingzhi Zhan, 2005 .

On the span of Hadamard products of vectors

Li Qiu, Xingzhi Zhan, L. Qiu, 2007 .

Lower bounds for the spread of a Hermitian matrix

Xingzhi Zhan, Erxiong Jiang, 1997 .