impor - Mathbox for Giovanni Mascellani

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Theorem impor 33880

Description: An equivalent formula for implying a disjunction. (Contributed by Giovanni Mascellani, 15-Sep-2017.)

**Assertion**
Ref	Expression
impor	$\/$ $\/$ $\/$

**Proof of Theorem impor**
Step	Hyp	Ref	Expression
1		imor 428	. 2 $\/$ $\/$ $\/$
2		orass 546	. 2 $\/$ $\/$ $\/$ $\/$
3	1, 2	bitr4i 267	1 $\/$ $\/$ $\/$

Colors of variables: wff setvar class

Syntax hints:

wn 3

wi 4

wb 196 $\/$ wo 383

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 197 df-or 385

This theorem is referenced by: (None)