Current Research Interests

Selected Publications

• Li, Q., Shiu, W.C., Sun, P.K., Ye, D.
  On the anti-Kekulé problem of cubic graphs
  (2020) Art of Discrete and Applied Mathematics, 2 (1), art. no. 1030.
• Shiu, W.C., Huang, P., Sun, P.K.
  The signless Laplacian spectral radius of k-connected irregular graphs
  (2017) Linear and Multilinear Algebra, 65 (4), pp. 830-839.
• Chen, D., Shiu, W.C., Shu, Q.J., Sun, P.K., Wang, W.F.
  A characterization of L(2,1)-labeling number for trees with maximum Degree 3
  (2016) Acta Mathematica Sinica, Chinese Series, 59 (5), pp. 685-710.
• Wu, Q., Shiu, W.C., Sun, P.K.
  L(j, k)-labeling number of Cartesian product of path and cycle
  (2016) Journal of Combinatorial Optimization, 31 (2), pp. 604-634.
• Huang, P., Shiu, W.C., Sun, P.K.
  Maximizing the spectral radius of k-connected graphs with given diameter
  (2016) Linear Algebra and Its Applications, 488, pp. 350-362.
• Chen, D., Shiu, W.C., Shu, Q., Sun, P.K., Wang, W.
  (2, 1) -total labeling of trees with large maximum degree
  (2015) Discrete Applied Mathematics, 187, pp. 61-69.
• Wu, Q., Shiu, W.C., Sun, P.K.
  Circular L(j,k)-labeling number of direct product of path and cycle
  (2014) Journal of Combinatorial Optimization, 27 (2), pp. 355-368.
• Zhang, H., Shiu, W.C., Sun, P.K.
  A relation between clar covering polynomial and cube polynomial
  (2013) Match, 70 (2), pp. 477-492.
• Chan, W.H., Shiu, W.C., Sun, P.K., Zhu, X.
  The strong game colouring number of directed graphs
  (2013) Discrete Mathematics, 313 (10), pp. 1070-1077.
• Shiu, W.C., Chen, H.-Y., Chen, X.-G., Sun, P.K.
  On the total restrained domination number of direct products of graphs
  (2012) Discussiones Mathematicae - Graph Theory, 32 (4), pp. 629-641.
• Sun, P.K., Shiu, W.C.
  Some results on incidence coloring, star arboricity and domination number
  (2012) Australasian Journal of Combinatorics, 54 (2), pp. 107-114.
• Sun, P.-K.
  Incidence coloring of regular graphs and complement graphs
  (2012) Taiwanese Journal of Mathematics, 16 (6), pp. 2289-2295.
• Shiu, W.C., Sun, P.K.
  Invalid proofs on incidence coloring
  (2008) Discrete Mathematics, 308 (24), pp. 6575-6580.