# Dense

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**Dense-in-itself**— In mathematics, a subset A of a topological space is said to be dense in itself if A contains no isolated points. Every dense in itself closed set is perfect. Conversely, every perfect set is dense in itself. A simple example of a set which is… …72

**Dense graph**— In mathematics, a dense graph is a graph in which the number of edges is close to the maximal number of edges. The opposite, a graph with only a few edges, is a sparse graph. The distinction between sparse and dense graphs is rather vague, and… …73

**Dense plasma focus**— Nikolaï Filippov et son Plasma Focus à l Institut Kourtchatov de Moscou L expression dense plasma focus (DPF) désigne un appareil qui, par accélération et compression électromagnétiques, donne naissance à un cordon de plasma à vie courte qui… …74

**Dense non-aqueous phase liquid**— A dense non aqueous phase liquid or DNAPL is a liquid that is both denser than water and is immiscible in or does not dissolve in water.[1] The term DNAPL is used primarily by environmental engineers and hydrogeologists to describe contaminants… …75

**Dense order**— In mathematics, a partial order ≤ on a set X is said to be dense if, for all x and y in X for which x < y, there is a z in X such that x < z < y. The rational numbers with the ordinary ordering are a densely ordered set in this sense, as …76

**Dense (Sheila)**— Pour les articles homonymes, voir Dense. Dense Album par Sheila Sortie 1999 Enregistrement Versailles …77

**Dense relation**— In mathematics, a binary relation R is said to be dense if, for all R related x and y, there is a z such that x and z and also z and y are R related. Formally: For example, a strict partial order < is a dense order iff < is a dense relation …78

**Dense subgraph**— An example of a graph G with density dG = 1.375 and it s densest subgraph induced by the vertices b,c,d and h in red with density 1.4 In computer science the notion of highly connect …79

**Dense heterarchy**— Hierarchical organization in social insect colonies can be thought of as a dense heterarchy in which the higher levels affect the lower levels and lower levels eventually influence the higher levels. Individual ants within the colony network are… …80

**Dense (Robert Charlebois)**— Pour les articles homonymes, voir Dense. Dense est un album de chansons de Robert Charlebois, sorti en 1988. Titres No …