In mathematics, a limit point of a set S in a topological space X is a point x that can be approximated by points of S in the sense that every neighbourhood of x with respect to the topology on X also contains a point of S other than x itself. Note that x does not have to be an element of S. This concept profitably generalizes the notion of a limit and is the underpinning of concepts such as closed set and topological closure. Indeed, a set is closed if and only if it contains all of its limit points, and the topological closure operation can be thought of as an operation that enriches a set by adding its limit points.
Hepcat
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A musician who rocks at jazz.
Hepcat meaning & definition 1 of Hepcat.
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[A] self-applied term used by 21st century people who believe in some form of the 1960s hippie philosophy. Some of these are sons, daughters and grandchildren of the original hippies. Drug use is just as accepted as in the original hippie days, although most [hepcats] do not consider it necessary to take drugs in order to be part of the lifestyle. Some modern hippies frown upon excessive drug use because of lessons learned from the past. Some of the more conservative hippies deplore most drugs other than cannabis and psychedelics, such as LSD, magic mushrooms and salvia.
Hepcat meaning & definition 2 of Hepcat.
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