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A multivariate polynomial (i.e., a polynomial in more than one variable) with all terms having the same degree. For example, x^3+xyz+y^2z+z^3 is a homogeneous polynomial of ...

A circle-preserving transformation composed of an even number of inversions.

Oriented in position perpendicular to up-down, and therefore parallel to a flat surface.

The locus of a point which is derived from a fixed point Q by continuous parallel displacement.

A lossless data compression algorithm which uses a small number of bits to encode common characters. Huffman coding approximates the probability for each character as a power ...

A version of fractal dimension used in time-series analysis.

Determined the possible values of r and n for which there is an identity of the form (x_1^2+...+x_r^2)(y_1^2+...+y_r^2)=z_1^2+...+z_n^2.

Two lines in hyperbolic geometry which diverge from each other in both directions.

A space having dimension n>3.

A 32-sided polygon. The regular icosidodecagon is a constructible polygon, and the regular icosidodecahedron of side length 1 has inradius r, circumradius R, and area A r = ...