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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
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csymdif
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Table of Contents - 2.1.13.4. The symmetric difference of two classes
csymdif
df-symdif
symdifcom
symdifeq1
symdifeq2
nfsymdif
elsymdif
dfsymdif4
elsymdifxor
dfsymdif2
symdifass
difsssymdif
difsymssdifssd