Theorem exp42 436

Description: An exportation inference. (Contributed by NM, 26-Apr-1994.)

Hypothesis

Ref	Expression
exp42.1	⊢ (((𝜑 ∧ (𝜓 ∧ 𝜒)) ∧ 𝜃) → 𝜏)

Assertion

Ref	Expression
exp42	⊢ (𝜑 → (𝜓 → (𝜒 → (𝜃 → 𝜏))))

Proof of Theorem exp42

Step	Hyp	Ref	Expression
1		exp42.1	. . 3 ⊢ (((𝜑 ∧ (𝜓 ∧ 𝜒)) ∧ 𝜃) → 𝜏)
2	1	exp31 420	. 2 ⊢ (𝜑 → ((𝜓 ∧ 𝜒) → (𝜃 → 𝜏)))
3	2	expd 416	1 ⊢ (𝜑 → (𝜓 → (𝜒 → (𝜃 → 𝜏))))

Syntax hints:   → wi 4   ∧ wa 396

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 208  df-an 397

This theorem is referenced by:  isofrlem  7291  f1ocnv2d  7616  oelim  8466  zorn2lem7  10422  addrid  11324  initoeu1  17976  termoeu1  17983  issubg4  19119  lmodvsdir  20883  lmodvsass  20884  gsummatr01lem4  22648  dvfsumrlim3  26025  wwlksext2clwwlk  30152  shscli  31413  f1o3d  32725  slmdvsdir  33304  slmdvsass  33305  lshpcmp  39487  relpfrlem  45404