Category:Von Neumann-Bernays-Gödel Set Theory

This category contains results about Von Neumann-Bernays-Gödel Set Theory.
Definitions specific to this category can be found in Definitions/Von Neumann-Bernays-Gödel Set Theory.

Von Neumann-Bernays-Gödel set theory is a system of axiomatic set theory.

Its main feature is that it classifies collections of objects into:

sets, whose construction is strictly controlled

and:

classes, which have fewer restrictions on how they may be generated.

All sets are classes, but not all classes are sets.