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Theorem 3pm3.2i 1206
Description: Infer conjunction of premises. (Contributed by NM, 10-Feb-1995.)
Hypotheses
Ref Expression
3pm3.2i.1 𝜑
3pm3.2i.2 𝜓
3pm3.2i.3 𝜒
Assertion
Ref Expression
3pm3.2i (𝜑𝜓𝜒)

Proof of Theorem 3pm3.2i
StepHypRef Expression
1 3pm3.2i.1 . . 3 𝜑
2 3pm3.2i.2 . . 3 𝜓
31, 2pm3.2i 272 . 2 (𝜑𝜓)
4 3pm3.2i.3 . 2 𝜒
5 df-3an 1011 . 2 ((𝜑𝜓𝜒) ↔ ((𝜑𝜓) ∧ 𝜒))
63, 4, 5mpbir2an 955 1 (𝜑𝜓𝜒)
Colors of variables: wff set class
Syntax hints:  wa 104  w3a 1009
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108
This theorem depends on definitions:  df-bi 117  df-3an 1011
This theorem is referenced by:  mpbir3an  1210  3jaoi  1344  ftp  5894  4bc2eq6  11196  halfleoddlt  12644  ballotfilemonn  13204  strleun  13441  strle1g  13443  slotstnscsi  13532  slotsdnscsi  13560  slotsdifunifndx  13569  2irrexpqap  16063  lgslem2  16103  lgsdir2lem2  16131  lgsdir2lem3  16132  usgrexmpldifpr  16473  0grsubgr  16488  konigsberglem4  16715  konigsberglem5  16716  ex-dvds  16727  nconstwlpolem0  17087
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