Laplacian graph spectrum

Cayley graph normal Cayley graph

General graph of complete graph

(*)-sum graph

(integral) sum graph

△-contraction graph

△-critical graph

1-chordal graph

1-cycle graph

1-Hamilton connected graph

1-planar graph

1-tough graph

1-tree graph

2-arc transitive graph

2-chordal graph

2-connected graph

2D graph representation

2-outer planar graph

2-regular graph