##### Speaker

Ahmad Asiri, PhD student, Department of Mathematics and Statistics, MSU

##### Title

Mathematics Seminar Series

##### Subtitle

Sign-symmetric signed graphs and signings of graphs

##### Physical Location

Allen 411

##### Digital Location

https://msstate.webex.com/msstate/j.php?MTID=m9e5b618e666004aac2d307c0fd2e100f

**Abstract:** A signed graph is a graph in which each edge is labelled plus or minus. A signed graph is sign-symmetric if it is ''switching isomorphic'' to the signed graph obtained by changing the sign of every edge to the opposite sign. We will discuss several results regarding sign-symmetric signed graphs. The difficult problem of determining the number of signings of a graph will also be examined. Some parts are joint work with Abdulaziz Alotaibi and Vaidy Sivaraman.