Circuit Gilles Villeneuve from the 2009 Formula One calendar and replaced with the inaugural Abu Dhabi Grand Prix. On November 27, 2009, Quebec's officials and Canadian Grand Prix organizers announced a settlement with Formula One Administration and signed a new five-year contract spanning the 2010–2014 seasons. The 2011 edition took place on June 12 at 1:00 pm (17:00 UTC) and was the longest World Championship Grand Prix ever, due to a lengthy rain delay. Originally named the Île Notre-Dame Circuit, the circuit was built and finished in 1978. In what has proven to be the venue's main event over the decades, the FIA
Circuit rank of any planar graph with the same vertex set, is called the meshedness coefficient. For a connected planar graph with edges and vertices, the meshedness coefficient can be computed by the formula Here, the numerator formula_5 of the formula is the circuit rank of the given graph, and the denominator formula_6 is the largest possible circuit rank of an -vertex planar graph. The meshedness coefficient ranges between 0 for trees and 1 for maximal planar graphs. The circuit rank controls the number of ears in an ear decomposition of a graph, a partition of the edges of the graph into