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Theorem nic-id 1244

Description: Theorem id 73 expressed with $-/\$ . (Contributed by Jeff Hoffman, 17-Nov-2007.)

**Assertion**
Ref	Expression
nic-id	$-/\$ $-/\$

**Proof of Theorem nic-id**
Step	Hyp	Ref	Expression
1		nic-ax 1239	. . 3 $-/\$ $-/\$ $-/\$ $-/\$ $-/\$ $-/\$ $-/\$ $-/\$ $-/\$ $-/\$ $-/\$
2	1	nic-idlem2 1243	. 2 $-/\$ $-/\$ $-/\$ $-/\$ $-/\$ $-/\$ $-/\$ $-/\$ $-/\$ $-/\$ $-/\$
3		nic-idlem1 1242	. . 3 $-/\$ $-/\$ $-/\$ $-/\$ $-/\$ $-/\$ $-/\$ $-/\$ $-/\$ $-/\$ $-/\$ $-/\$ $-/\$ $-/\$ $-/\$ $-/\$ $-/\$ $-/\$ $-/\$ $-/\$ $-/\$ $-/\$ $-/\$
4	3	nic-idlem2 1243	. 2 $-/\$ $-/\$ $-/\$ $-/\$ $-/\$ $-/\$ $-/\$ $-/\$ $-/\$ $-/\$ $-/\$ $-/\$ $-/\$ $-/\$ $-/\$ $-/\$ $-/\$
5	2, 4	nic-mp 1237	1 $-/\$ $-/\$

Colors of variables: wff set class

Syntax hints: $-/\$ wnand 1229

This theorem is referenced by: nic-swap 1245 nic-idel 1250 nic-bijust 1253 nic-bi1 1254 nic-bi2 1255 nic-luk2 1258 nic-luk3 1259

This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7

This theorem depends on definitions: df-bi 164 df-an 242 df-nand 1230