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.
Reducer
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[football] term, by where a player (usually of lesser ability) will attempt to tackle an opposition player (usually of superior abiliy) in a grossly unfair and extremely violent manner, so as to let the opposition player know that if he values his [family jewels] then today might be a good day to have an off day.
The reducer is often aimed at knee height of the opposition player (or in extreme cases, the [testicles]), and will usually take place in the first few minutes of the game.
Reducer meaning & definition 1 of Reducer.
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When you make a massive [slide tackle] in [a game of football] and the other player is brought to the [floor],
Reducer meaning & definition 2 of Reducer.
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in football, a hard tackle that a defender makes at the beginning of a game, with the intention of making an attacking player feel worried for the rest of the game
Reducer meaning & definition 3 of Reducer.