Category:Class Intersection

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This category contains results about Class Intersection.


Let $A$ and $B$ be two classes.


The (class) intersection $A \cap B$ of $A$ and $B$ is defined as the class of all sets $x$ such that $x \in A$ and $x \in B$:

$x \in A \cap B \iff x \in A \land x \in A$

or:

$A \cap B = \set {x: x \in A \land x \in B}$