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Axiom ax-r3 439
Description: Orthomodular law - when added to an ortholattice, it makes the ortholattice an orthomodular lattice. See r3a 440 for a more compact version.
Ref Expression
r3.1 (c v c') = ((a' v b')' v (a v b)')
Ref Expression
ax-r3 a = b

Detailed syntax breakdown of Axiom ax-r3
StepHypRef Expression
1 wva . 2 term a
2 wvb . 2 term b
31, 2wb 1 1 wff a = b
Colors of variables: term
This axiom is referenced by:  r3a  440
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