This is an inofficial mirror of http://metamath.tirix.org for personal testing of a visualizer extension only.
Metamath Proof Explorer
Description: Extend the definition of a wff to include the disjoint predicate, i.e.,
the disjoint relation predicate. (Read: R is a disjoint.)
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Ref |
Expression |
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Assertion |
wdisjALTV |
wff Disj 𝑅 |