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Axiom ax-jca 17
Description: Join common antecedents. (Contributed by Mario Carneiro, 8-Oct-2014.)
Hypotheses
Ref Expression
ax-jca.1 |- R |= S
ax-jca.2 |- R |= T
Assertion
Ref Expression
ax-jca |- R |= (S, T)
Detailed syntax breakdown of Axiom ax-jca
StepHypRef Expression
1 tr . 2 term R
2 ts . . 3 term S
3 tt . . 3 term T
42, 3kct 10 . 2 term (S, T)
51, 4wffMMJ2 11 1 wff R |= (S, T)
Colors of variables: type var term
This axiom is referenced by:  jca  18
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