truortru - Metamath Proof Explorer

	Metamath Proof Explorer		< Previous Next > Nearby theorems
Mirrors > Home > MPE Home > Th. List > truortru		Structured version Visualization version Unicode version

Theorem truortru 1510

Description: A $\/$ identity. (Contributed by Anthony Hart, 22-Oct-2010.) (Proof shortened by Andrew Salmon, 13-May-2011.)

**Assertion**
Ref	Expression
truortru	$\/$

**Proof of Theorem truortru**
Step	Hyp	Ref	Expression
1		oridm 536	1 $\/$

Colors of variables: wff setvar class

Syntax hints:

wb 196 $\/$ wo 383

wtru 1484

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)