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Theorem nic-iimp1 1248
Description: Inference version of nic-imp 1241 using right-handed term. (Contributed by Jeff Hoffman, 17-Nov-2007.)
Hypotheses
Ref Expression
nic-iimp1.1 |- (ph -/\ (ch -/\ ps))
nic-iimp1.2 |- (th -/\ ch)
Assertion
Ref Expression
nic-iimp1 |- (th -/\ ph)

Proof of Theorem nic-iimp1
StepHypRef Expression
1 nic-iimp1.2 . . 3 |- (th -/\ ch)
2 nic-iimp1.1 . . . 4 |- (ph -/\ (ch -/\ ps))
32nic-imp 1241 . . 3 |- ((th -/\ ch) -/\ ((ph -/\ th) -/\ (ph -/\ th)))
41, 3nic-mp 1237 . 2 |- (ph -/\ th)
54nic-isw1 1246 1 |- (th -/\ ph)
Colors of variables: wff set class
Syntax hints:   -/\ wnand 1229
This theorem is referenced by:  nic-iimp2 1249  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
Copyright terms: Public domain