(*)-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

2-way graph partitioning

3-chordal graph

3-Connccted 3-regular graph

3D effect graph