tsor1 - Mathbox for Giovanni Mascellani

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Theorem tsor1 33954

Description: A Tseitin axiom for logical disjunction, in deduction form. (Contributed by Giovanni Mascellani, 25-Mar-2018.)

**Assertion**
Ref	Expression
tsor1	$\/$ $\/$ $\/$

**Proof of Theorem tsor1**
Step	Hyp	Ref	Expression
1		exmidd 432	1 $\/$ $\/$ $\/$

Colors of variables: wff setvar class

Syntax hints:

wn 3

wi 4 $\/$ 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)