Spectral extremal graphs for intersecting cliques

Dheer Noal Desai, Liying Kang, Yongtao Li +3

The $(k,r)$-fan is the graph consisting of $k$ copies of the complete graph $K_r$ which intersect in a single vertex, and is denoted by $F_{k,r}$. Erdős, Füredi, Gould and Gunderso…