In mathematics, set A is a subset of a set B if all elements of A are also elements of B; B is then a superset of A.It is possible for A and B to be equal; if they are unequal, then A is a proper subset of B.The relationship of one set being a subset of another is called inclusion (or sometimes containment).A is a subset of B may also be expressed as B includes (or contains) A or A is …

Objective-C is a general-purpose, object-oriented programming language that adds Smalltalk-style messaging to the C programming language. Originally developed by Brad Cox and Tom Love in the early 1980s, it was selected by NeXT for its NeXTSTEP operating system. Objective-C was the standard programming language supported by Apple for developing macOS (which descended …

Die mathematischen Begriffe Teilmenge und Obermenge beschreiben eine Beziehung zwischen zwei Mengen.Ein anderes Wort für Teilmenge ist Untermenge.. Für die mathematische Abbildung der Einbettung einer Teilmenge in ihre Grundmenge, die mathematische Funktion der Teilmengenbeziehung, wird die Inklusionsabbildung verwendet. ist eine Teilmenge von und ist …

superset: A is a superset of B. set A includes set B {9,14,28} ⊇ {9,14,28} A⊃B: proper superset / strict superset: A is a superset of B, but B is not equal to A. {9,14,28} ⊃ {9,14} A⊅B: not superset: set A is not a superset of set B {9,14,28} ⊅ {9,66} 2 A: power set: all subsets of A : power set: