Title：Direct product of signed graphs

Abstract：In 1953, signed graphs as a model for social networks were introduced by F. Harary. A signed graph is a graph together with an assignment of signs to the edges. In 2011, K.A.Germina et al defined the direct product of signed graph, products of graphs are a fundamental construction in graph theory. In this talk, we introduce the direct product of signed graphs, especially the factors, switching isomorphism and chromatic number on direct product of signed graphs.

Speaker：Chao Wen, Ph.D., Guizhou University. His research interests include Algebra and graph theory. His results published on《Discrete Applied Mathematics》《Discrete Mathematics》.

Date：7:30pm-8:30pm 2021-11-29（Monday）.

Tencent Meeting ID： 475 363 406

Organizer：School of Mathematical Science

Students and teachers who are interested in graph theory are welcome.