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The limaçon is a polar curve of the form r=b+acostheta (1) also called the limaçon of Pascal. It was first investigated by Dürer, who gave a method for drawing it in ...

A set considered together with the sigma-algebra on the set.

In the American system, 10^(57).

A bicupola in which the bases are in the same orientation.

Orthogonal contravariant and covariant satisfy g_(ik)g^(ij)=delta_k^j, where delta_j^k is the Kronecker delta.

The lines containing the three points of the intersection of the three pairs of opposite sides of a (not necessarily regular) hexagon. There are 6! (i.e., 6 factorial) ...

Circumscribe a triangle about a circle, another circle around the triangle, a square outside the circle, another circle outside the square, and so on. The circumradius and ...

A plane figure for which quadrature is possible is said to be quadrable.

The point with respect to which a radial curve is computed.

The type of homology which results when the spaces being studied are restricted to simplicial complexes and subcomplexes.