基金J.Koolen was partially supported by the National Natural Science Foundation of China(Grants No.11471009 and No.11671376)by the fund Anhui Initiative in Quantum Information Technologies(No.AHY150000)Q.Q.Yang was partially supported by the China Scholarship Council(No.201806340049)when she was studying at Tohoku University as a joint Ph.D.student.
文摘In this note we give several problems and conjectures on graphs with fixed smallest eigenvalue.
