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In geometric graph theory, a branch of mathematics, a matchstick graph is a graph that can be drawn in the plane in such a way that its edges are line...

edge-graceful when k is even and not when k is odd. It is an edge-transitive matchstick graph, and has diameter 2 (when l > 1), girth ∞ (it has no cycles), chromatic...

plant Matchstick girl, a variant name of the fictional character "The Little Match Girl" Matchstick graph, a type of geometric graph Matchstick Men, a...

may have different lengths. Every penny graph is a unit disk graph and a matchstick graph. Like planar graphs more generally, they obey the four color...

distance graphs include the cactus graphs, the matchstick graphs and penny graphs, and the hypercube graphs. The generalized Petersen graphs are non-strict...

sum of divisors, φ(104) = φ(σ(104)). The smallest known 4-regular matchstick graph has 104 edges and 52 vertices, where four unit line segments intersect...

a Wedderburn-Etherington number. There are exactly 207 different matchstick graphs with eight edges. 207 is a deficient number, as 207's proper divisors...

In graph theory, a parity graph is a graph in which every two induced paths between the same two vertices have the same parity: either both paths have...

triangle graph Matchstick graph, a graph that can be drawn planarly with all edge lengths equal to 1 Erdős–Diophantine graph, a complete graph with integer...

a unit distance drawing; that is, it is not a matchstick graph. The Moser spindle is also a Laman graph, meaning that it forms a minimally rigid system...

triangular matchstick number 1135 = centered triangular number 1136 = number of independent vertex sets and vertex covers in the 7-sunlet graph 1137 = sum...

form four equilateral triangles using six unbroken matchsticks. The solution places the matchsticks along the edges of a tetrahedron. The skeleton of the...

the Harborth graph. It is the smallest known example of a 4-regular matchstick graph. It has 104 edges and 52 vertices. In connection with the happy ending...

Königsberg Water, gas, and electricity Slitherlink Rubik's Cube Think-a-Dot Matchstick puzzle Conway's Game of Life Flexagon Polyominoes Kulkarni, D. Enjoying...

servicing platform application provided by Black Knight Financial Services Matchstick Productions, a company producing videos of extreme sports, especially...

Make 20 equilateral triangles using 15 matchsticks, where each side of every triangle is exactly one matchstick. It can also be called a hexateron, or...

same size, using 10 matchsticks, where each side of every triangle is exactly one matchstick, and none of the triangles and matchsticks intersect one another...

number of partitions of 24 into divisors of 24 459 = 33 × 17, triangular matchstick number 459 West 18th Street, a residential building at that address in...

the oldest games in the world. Yaglom, I. M. (2001), "Two games with matchsticks", in Tabachnikov, Serge (ed.), Kvant Selecta: Combinatorics, I, Volume...

non-palindromic number 828 = 22 × 32 × 23, Harshad number, triangular matchstick number 829 = prime number, twin prime, part of prime quadruplet with {827...