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The span of an unoriented link diagram (also called the link spread) is the difference between the highest and lowest degrees of its bracket polynomial. The span is a ...

The dimension of a partially ordered set P=(X,<=) is the size of the smallest realizer of P. Equivalently, it is the smallest integer d such that P is isomorphic to a ...

The rectifiable sets include the image of any Lipschitz function f from planar domains into R^3. The full set is obtained by allowing arbitrary measurable subsets of ...

An object is reflexible if it is superposable with its image in a plane mirror. Also called amphichiral.

The third power point is the triangle center with triangle center function alpha_(32)=a^3. It is Kimberling center X_(32).

Johnson solid J_(18).

Two or more lines or line segments which are perpendicular are said to be orthogonal.

In the American system, 10^(63).

A plane image or pair of two-dimensional images that, when appropriately viewed using both eyes, produces an image which appears to be three-dimensional. By taking a pair of ...

The beta function B(p,q) is the name used by Legendre and Whittaker and Watson (1990) for the beta integral (also called the Eulerian integral of the first kind). It is ...