Theorem 3pm3.2i 1175

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	⊢ (𝜑 ∧ 𝜓 ∧ 𝜒)

Proof of Theorem 3pm3.2i

Step	Hyp	Ref	Expression
1		3pm3.2i.1	. . 3 ⊢ 𝜑
2		3pm3.2i.2	. . 3 ⊢ 𝜓
3	1, 2	pm3.2i 272	. 2 ⊢ (𝜑 ∧ 𝜓)
4		3pm3.2i.3	. 2 ⊢ 𝜒
5		df-3an 980	. 2 ⊢ ((𝜑 ∧ 𝜓 ∧ 𝜒) ↔ ((𝜑 ∧ 𝜓) ∧ 𝜒))
6	3, 4, 5	mpbir2an 942	1 ⊢ (𝜑 ∧ 𝜓 ∧ 𝜒)

Syntax hints:   ∧ wa 104   ∧ w3a 978

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 980

This theorem is referenced by:  mpbir3an  1179  3jaoi  1303  ftp  5701  4bc2eq6  10749  halfleoddlt  11893  strleun  12557  strle1g  12559  slotstnscsi  12644  slotsdnscsi  12668  slotsdifunifndx  12677  2irrexpqap  14327  lgslem2  14333  lgsdir2lem2  14361  lgsdir2lem3  14362  ex-dvds  14402  nconstwlpolem0  14730