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In mathematics, a linear equation is an equation that may be put in the form + … + + =, where , …, are the variables (or unknowns), and ,, …, are the coefficients, which are often real numbers. The coefficients may be considered as parameters of the equation and may be arbitrary expressions , provided they do not contain any of the variables.
Q n has 2 n vertices, 2 n – 1 n edges, and is a regular graph with n edges touching each vertex. The hypercube graph Q n may also be constructed by creating a vertex for each subset of an n -element set, with two vertices adjacent when their subsets differ in a single element, or by creating a vertex for each n -digit binary number , with two ...