Prof. LI Xueliang gave a lecture titled＂Graphs with maximum energy＂at AMSS on April，3.2015．

In his talk, he first gave an introduction for the concept of graph energy. Then, results on graphs with maximum energy are surveyed. Results on the energy of random graphs and regular graphs are also given. Finally, he summarized methods on the comparation of graph energies. Some unsolved problems are also presented during this talk.

Prof. LI got the PhD Degree of University of Twente in 1991. His research interests cover graph theory and its applications, combinatorial optimizations, algorithms and complexity analysis, NP-hard problems, discrete mathematics and its applications in computer science, chemistry and biology, etc.

He is the Vice President of the International Academy of Mathematical Chemistry (IAMC) (2014--2017),Member of the International Academy of Mathematical Chemistry (IAMC),President for the Chinese Society of Combinatorics and Graph Theory (2014--2018), Vice President of Tianjin Society of Mathematics (2014--), Member of the 8th Committee of the Tianjin Association for Science and Technology (2014--2019), Secretary-General of Tianjin Society for Industrial and Applied Mathematics (TJSIAM) (2007--2015) and Technical Committee on Networks of the International Association of Science and Technology for Development (IASTED).