Theorem sylanblrc 420

Description: Syllogism inference combined with a biconditional. (Contributed by BJ, 25-Apr-2019.)

Hypotheses

Ref	Expression
sylanblrc.1	⊢ (𝜑 → 𝜓)
sylanblrc.2	⊢ 𝜒
sylanblrc.3	⊢ (𝜃 ↔ (𝜓 ∧ 𝜒))

Assertion

Ref	Expression
sylanblrc	⊢ (𝜑 → 𝜃)

Proof of Theorem sylanblrc

Step	Hyp	Ref	Expression
1		sylanblrc.1	. 2 ⊢ (𝜑 → 𝜓)
2		sylanblrc.2	. 2 ⊢ 𝜒
3		sylanblrc.3	. . 3 ⊢ (𝜃 ↔ (𝜓 ∧ 𝜒))
4	3	biimpri 133	. 2 ⊢ ((𝜓 ∧ 𝜒) → 𝜃)
5	1, 2, 4	sylancl 417	1 ⊢ (𝜑 → 𝜃)

This proof depends on syntax axioms:   → wi 4   ∧ wa 104   ↔ wb 105

This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108

This proof depends on definitions:  df-bi 117

This theorem is used by:  cosmul  12512  ismgmid  13697  mndideu  13739  cdivcncfap  15705  dvrecap  15814