3mix1i - New Foundations Explorer

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Theorem 3mix1i 1127

Description: Introduction in triple disjunction. (Contributed by Mario Carneiro, 6-Oct-2014.)

**Hypothesis**
Ref	Expression
3mixi.1

**Assertion**
Ref	Expression
3mix1i	$\/$ $\/$

**Proof of Theorem 3mix1i**
Step	Hyp	Ref	Expression
1		3mixi.1	. 2
2		3mix1 1124	. 2 $\/$ $\/$
3	1, 2	ax-mp 5	1 $\/$ $\/$

Colors of variables: wff setvar class

Syntax hints: $\/$ w3o 933

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8

This theorem depends on definitions: df-bi 177 df-or 359 df-3or 935

This theorem is referenced by: tpid1 3830