(3, 1)-lollipop graph | (3, 1)-tadpole graph | 3-pan graph | 4-graph 8 | 4-matchstick graph 1

vertex count | 4 edge count | 4 connected component count | 1

almost Hamiltonian | apex | asymmetric | bridged | cactus | chordal | chordless | chromatically unique | class 1 | claw-free | connected | cyclic | determined by resistance | determined by spectrum | geodetic | graceful | line graphs | lollipop | matchstick | maximally nonhamiltonian | noncayley | nonempty | noneulerian | nonhamiltonian | outerplanar | pan | perfect | perfect matching | planar | projective planar | pseudoforest | pseudotree | simple | split | square-free | strongly perfect | tadpole | traceable | unicyclic | unit-distance | weakly perfect

3-path and singleton

diamond graph

vertex degrees | 1 (1 vertex) | 2 (2 vertices) | 3 (1 vertex)

radius | 1 diameter | 2 girth | 3 vertex connectivity | 1 edge connectivity | 1

(x + 1) (x^3 - x^2 - 3 x + 1)

(x + 1) (x^2 y + 3 x^2 + 3 x + 1)

x (x^2 + x + y)

chromatic number | 3 edge chromatic number | 3

(root of 1 - 3 x - x^2 + x^3 near x = -1.48119)^1 (-1)^1 (root of 1 - 3 x - x^2 + x^3 near x = 0.311108)^1 (root of 1 - 3 x - x^2 + x^3 near x = 2.17009)^1

(0 | 1 | 1 | 0 1 | 0 | 1 | 0 1 | 1 | 0 | 1 0 | 0 | 1 | 0)

(1 | 1 | 0 | 0 1 | 0 | 1 | 0 0 | 1 | 1 | 1 0 | 0 | 0 | 1)

Hosoya index | 6 Kirchhoff index | 6.333 stability index | 6 Wiener index | 8