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Theorem syl122anc 1193
Description: Syllogism combined with contraction. (Contributed by NM, 11-Mar-2012.)
Hypotheses
Ref Expression
sylXanc.1 (𝜑𝜓)
sylXanc.2 (𝜑𝜒)
sylXanc.3 (𝜑𝜃)
sylXanc.4 (𝜑𝜏)
sylXanc.5 (𝜑𝜂)
syl122anc.6 ((𝜓 ∧ (𝜒𝜃) ∧ (𝜏𝜂)) → 𝜁)
Assertion
Ref Expression
syl122anc (𝜑𝜁)

Proof of Theorem syl122anc
StepHypRef Expression
1 sylXanc.1 . 2 (𝜑𝜓)
2 sylXanc.2 . 2 (𝜑𝜒)
3 sylXanc.3 . 2 (𝜑𝜃)
4 sylXanc.4 . . 3 (𝜑𝜏)
5 sylXanc.5 . . 3 (𝜑𝜂)
64, 5jca 302 . 2 (𝜑 → (𝜏𝜂))
7 syl122anc.6 . 2 ((𝜓 ∧ (𝜒𝜃) ∧ (𝜏𝜂)) → 𝜁)
81, 2, 3, 6, 7syl121anc 1189 1 (𝜑𝜁)
Colors of variables: wff set class
Syntax hints:  wi 4  wa 103  w3a 930
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7  ax-ia1 105  ax-ia2 106  ax-ia3 107
This theorem depends on definitions:  df-bi 116  df-3an 932
This theorem is referenced by:  divdiv32apd  8437  divcanap5d  8438  divcanap7d  8440  divdivap1d  8443  divdivap2d  8444  seq3coll  10426  cau3lem  10726  summodclem2a  10989  prmind2  11594  divnumden  11666  blss2ps  12334  blss2  12335  blssps  12355  blss  12356  xmeter  12364
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