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A type I Markov move.

If the consistency of one of two propositions implies the consistency of the other, the first is said to have greater consistency strength.

The "contiguous USA graph" is the graph whose vertices represent the contiguous 48 states of the United States plus the District of Columbia (DC) and whose edges connect ...

A topological space.

No A is not-A.

An immediate consequence of a result already proved. Corollaries usually state more complicated theorems in a language simpler to use and apply.

x^(2n)+1=[x^2-2xcos(pi/(2n))+1] ×[x^2-2xcos((3pi)/(2n))+1]×...× ×[x^2-2xcos(((2n-1)pi)/(2n))+1].

The largest n such that |z_n|<4 in a Mandelbrot set. Points of different count are often assigned different colors.

If X and Y are independent variates and X+Y is a normal distribution, then both X and Y must have normal distributions. This was proved by Cramér in 1936.

Exchanges branches of the hyperbola x^'y^'=xy. x^' = mu^(-1)x (1) y^' = -muy. (2)