Database
ZF (ZERMELO-FRAENKEL) SET THEORY
ZF Set Theory - add the Axiom of Union
Equivalence relations and classes
cqs
Next ⟩
df-er
Metamath Proof Explorer
Unicode
Structured
Syntax definition
cqs
Description:
Extend the definition of a class to include quotient set.
Ref
Expression
Assertion
cqs
class ( A /. R )