Connected set

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A subset of an ambient set in which a notion of connectivity is defined, in the sense of which this subset is connected. For example, connected sets in the space of real numbers are convex sets, and only them; a connected set of a graph is a set in which any two points can be joined by a path that lies entirely in this set.

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Connected set. Encyclopedia of Mathematics. URL:
This article was adapted from an original article by V.I. Malykhin (originator), which appeared in Encyclopedia of Mathematics - ISBN 1402006098. See original article