Connected Set

connected set

[kə′nek·təd ′set]
(mathematics)
A set in a topological space which is not the union of two nonempty sets A and B for which both the intersection of the closure of A with B and the intersection of the closure of B with A are empty; intuitively, a set with only one piece.

Connected Set

 

(in mathematics), a set of points that is, as it were, all in one piece. In other words, a connected set is a set such that for any division of it into two disjoint nonempty subsets one of the subsets contains a limit point of the other (seeLIMIT POINT). The only connected sets on a line are intervals (seeINTERVAL AND SEGMENT). Examples of connected sets in the plane and in space are the circle, the sphere, and any convex set (seeCONVEX BODY). In Euclidean space an open set is connected if and only if any two of its points can be joined by a broken line lying entirely in the set. Compact connected sets are called continua.

References in periodicals archive ?
Internet connected set top boxes will be supplied with a keyboard and mouse, effectively delivering a low cost PC and education application to be used with a consumer's own television.
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In moving from an initial adherence to Wolff's mathematical method to his own critical formulation in the Critique of Pure Reason Kant passes through his remarks upon Meier's notion of a system as a connected set of "dogmatic truths.
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