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One of the Zermelo-Fraenkel axioms which asserts the existence for any set a of a set x such that, for any y of a, if there exists a z satisfying A(y,z), then such z exists ...

The set of points in the space of system variables such that initial conditions chosen in this set dynamically evolve to a particular attractor.

A set is said to be bounded from above if it has an upper bound. Consider the real numbers with their usual order. Then for any set M subset= R, the supremum supM exists (in ...

The cardinal number of any set is lower than the cardinal number of the set of all its subsets. A corollary is that there is no highest aleph (aleph).

The function given by CK_n(x)=cos(nxcos^(-1)x), where n is an integer and -1<x<1.

The branch of mathematics which formalizes a number of algebraic properties of collections of transformations between mathematical objects (such as binary relations, groups, ...

A Chu space is a binary relation from a set A to an antiset X which is defined as a set which transforms via converse functions.

The end values which specify a class interval.

An abbreviation for the cokernel.

An n-component of a graph G is a maximal n-connected subgraph.