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Theorem an72ds 32875
Description: Inference exchanging the last antecedent with the second one. (Contributed by Thierry Arnoux, 3-Jun-2025.)
Hypothesis
Ref Expression
an72ds.1 (((((((𝜑𝜓) ∧ 𝜒) ∧ 𝜃) ∧ 𝜏) ∧ 𝜂) ∧ 𝜁) → 𝜎)
Assertion
Ref Expression
an72ds (((((((𝜑𝜁) ∧ 𝜒) ∧ 𝜃) ∧ 𝜏) ∧ 𝜂) ∧ 𝜓) → 𝜎)

Proof of Theorem an72ds
StepHypRef Expression
1 an32 659 . . . . . 6 (((𝜑𝜓) ∧ 𝜁) ↔ ((𝜑𝜁) ∧ 𝜓))
21anbi1i 636 . . . . 5 ((((𝜑𝜓) ∧ 𝜁) ∧ 𝜃) ↔ (((𝜑𝜁) ∧ 𝜓) ∧ 𝜃))
32anbi1i 636 . . . 4 (((((𝜑𝜓) ∧ 𝜁) ∧ 𝜃) ∧ 𝜏) ↔ ((((𝜑𝜁) ∧ 𝜓) ∧ 𝜃) ∧ 𝜏))
43anbi1i 636 . . 3 ((((((𝜑𝜓) ∧ 𝜁) ∧ 𝜃) ∧ 𝜏) ∧ 𝜂) ↔ (((((𝜑𝜁) ∧ 𝜓) ∧ 𝜃) ∧ 𝜏) ∧ 𝜂))
5 an72ds.1 . . . 4 (((((((𝜑𝜓) ∧ 𝜒) ∧ 𝜃) ∧ 𝜏) ∧ 𝜂) ∧ 𝜁) → 𝜎)
65an62ds 32874 . . 3 (((((((𝜑𝜓) ∧ 𝜁) ∧ 𝜃) ∧ 𝜏) ∧ 𝜂) ∧ 𝜒) → 𝜎)
74, 6sylanbr 594 . 2 (((((((𝜑𝜁) ∧ 𝜓) ∧ 𝜃) ∧ 𝜏) ∧ 𝜂) ∧ 𝜒) → 𝜎)
87an62ds 32874 1 (((((((𝜑𝜁) ∧ 𝜒) ∧ 𝜃) ∧ 𝜏) ∧ 𝜂) ∧ 𝜓) → 𝜎)
Colors of variables:    wff setvar class
This proof depends on syntax axioms:  wi 4  wa 401
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8
This proof depends on definitions:  df-bi 210  df-an 402
This theorem is used by:  an82ds  32876  1arithufdlem3  33900
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