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R(p,tau) = int_(-infty)^inftyint_(-infty)^infty[1/(sigmasqrt(2pi))e^(-(x^2+y^2)/(2sigma^2))]delta[y-(tau+px)]dydx (1) = ...

A polyhedron with extra square faces, given by the Schläfli symbol r{p; q}.

The portion of the complex plane z=x+iy with real part R[z]>0.

A linkage which converts circular to linear motion using a hinged square.

A method for constructing magic squares of odd order, also called de la Loubere's method.

The mean square deviation of the best local fit straight line to a staircase cumulative spectral density over a normalized energy scale.

The straight polyomino of order n is the n-polyomino in which all squares are placed along a line.

The subdiagonal of a square matrix is the set of elements directly under the elements comprising the diagonal. For example, in the following matrix, the diagonal elements are ...

The superdiagonal of a square matrix is the set of elements directly above the elements comprising the diagonal. For example, in the following matrix, the diagonal elements ...

The space join of a topological space X and a pair of points S^0, Sigma(X)=X*S^0.