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207 is a Wedderburn-Etherington number. [1] There are exactly 207 different matchstick graphs with eight edges. [2] [3] 207 is a deficient number, as 207's proper divisors (divisors not including the number itself) only add up to 105: + + + + = <.
It has 104 edges and 52 vertices and is currently the smallest known example of a 4-regular matchstick graph. [3] It is a rigid graph. [4] Every 4-regular matchstick graph contains at least 20 vertices. [5] Examples of 4-regular matchstick graphs are currently known for all number of vertices ≥ 52 except for 53, 55, 56, 58, 59, 61 and 62.
Every matchstick graph is a planar graph, [14] but some otherwise-planar unit distance graphs (such as the Moser spindle) have a crossing in every representation as a unit distance graph. Additionally, in the context of unit distance graphs, the term 'planar' should be used with care, as some authors use it to refer to the plane in which the ...
Blake Lively and Justin Baldoni aren't the first Hollywood actor-director duo to engage in on-set feuds. Will Smith and Chevy Chase infamously sparred with directors on their films.
Depression among people with diabetes remains a key health area to address. There has been recent interest in whether glucagon-like peptide-1 receptor agonists (GLP-1RAs) affect depression risk.
Match summaries and player statistics, updated in real-time during the World Cup 03/14 March Madness Predict-o-Tron Probabilistic bracket generator for the 2014 Men's NCAA basketball tournament
A graph can only contain a perfect matching when the graph has an even number of vertices. A near-perfect matching is one in which exactly one vertex is unmatched. Clearly, a graph can only contain a near-perfect matching when the graph has an odd number of vertices, and near-perfect matchings are maximum matchings. In the above figure, part (c ...
“Suits LA” arrives on Feb. 23, just six weeks after the devastating wildfires that destroyed much of the Pacific Palisades and Altadena. Initially, the series was only going to be set in Los ...