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An addition chain for a number n is a sequence 1=a_0<a_1<...<a_r=n, such that each member after a_0 is the sum of two earlier (not necessarily distinct) ones. The number r is ...

The identity element of an additive group G, usually denoted 0. In the additive group of vectors, the additive identity is the zero vector 0, in the additive group of ...

Given an acute angle in a right triangle, the adjacent side is the leg of the triangle from which the angle to the hypotenuse is measured. Lengths of adjacent and opposite ...

A term in logic meaning pertaining to truth and falsehood.

In probability, an event with Lebesgue measure 1.

A stereogram made of two pictures, one red and one blue, taken from offset positions. When the pictures are viewed through glasses with one lens of each color, the picture ...

A set which transforms via converse functions. Antisets usually arise in the context of Chu spaces.

An initial point that provides safe convergence of Newton's method (Smale 1981; Petković et al. 1997, p. 1).

The process used to generate an expression for a covariant in the first degree of any one of the equivalent sets of coefficients for a curve.

The three circular triangles A^'B^'C^', AB^'C^', A^'BC^', and A^'B^'C obtained by extending the arcs of a circular triangle ABC into complete circles.