Theorem syl221anc 1282

Description: Syllogism combined with contraction. (Contributed by NM, 11-Mar-2012.)

Hypotheses

Ref	Expression
sylXanc.1	⊢ (𝜑 → 𝜓)
sylXanc.2	⊢ (𝜑 → 𝜒)
sylXanc.3	⊢ (𝜑 → 𝜃)
sylXanc.4	⊢ (𝜑 → 𝜏)
sylXanc.5	⊢ (𝜑 → 𝜂)
syl221anc.6	⊢ (((𝜓 ∧ 𝜒) ∧ (𝜃 ∧ 𝜏) ∧ 𝜂) → 𝜁)

Assertion

Ref	Expression
syl221anc	⊢ (𝜑 → 𝜁)

Proof of Theorem syl221anc

Step	Hyp	Ref	Expression
1		sylXanc.1	. 2 ⊢ (𝜑 → 𝜓)
2		sylXanc.2	. 2 ⊢ (𝜑 → 𝜒)
3		sylXanc.3	. . 3 ⊢ (𝜑 → 𝜃)
4		sylXanc.4	. . 3 ⊢ (𝜑 → 𝜏)
5	3, 4	jca 306	. 2 ⊢ (𝜑 → (𝜃 ∧ 𝜏))
6		sylXanc.5	. 2 ⊢ (𝜑 → 𝜂)
7		syl221anc.6	. 2 ⊢ (((𝜓 ∧ 𝜒) ∧ (𝜃 ∧ 𝜏) ∧ 𝜂) → 𝜁)
8	1, 2, 5, 6, 7	syl211anc 1277	1 ⊢ (𝜑 → 𝜁)

Syntax hints:   → wi 4   ∧ wa 104   ∧ w3a 1002

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 1004

This theorem is referenced by:  syl222anc  1287  vtocldf  2853  dmdcanapd  8993  exprecap  10835  fzowrddc  11221  xrbdtri  11830  2strbasg  13196  2stropg  13197  fnpr2o  13415  cnptoprest  14956  blssps  15144  blss  15145  metequiv2  15213  xmettx  15227  edgstruct  15908  usgr2v1e2w  16090