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Theorem nic-luk2 1457
Description: Proof of luk-2 1421 from nic-ax 1438 and nic-mp 1436. (Contributed by Jeff Hoffman, 18-Nov-2007.) (Proof modification is discouraged.) (New usage is discouraged.)
Assertion
Ref Expression
nic-luk2

Proof of Theorem nic-luk2
StepHypRef Expression
1 nic-dfim 1434 . . . . 5
21nic-bi2 1454 . . . 4
3 nic-dfneg 1435 . . . . . 6
4 nic-id 1443 . . . . . 6
53, 4nic-iimp1 1447 . . . . 5
65nic-isw2 1446 . . . 4
72, 6nic-iimp1 1447 . . 3
87nic-isw1 1445 . 2
9 nic-dfim 1434 . . 3
109nic-bi1 1453 . 2
118, 10nic-mp 1436 1
Colors of variables: wff setvar class
Syntax hints:   wn 3   wi 4   wnan 1287
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-an 360  df-nan 1288
This theorem is referenced by: (None)
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