Database
ZF (ZERMELO-FRAENKEL) SET THEORY
ZF Set Theory - start with the Axiom of Extensionality
The difference, union, and intersection of two classes
The symmetric difference of two classes
csymdif
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df-symdif
Metamath Proof Explorer
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Syntax definition
csymdif
Description:
Declare the syntax for symmetric difference.
Ref
Expression
Assertion
csymdif
class
A
∆
B