Theorem 3simp2 595

Description: Simplification of triple conjunction.

Assertion

Ref	Expression
3simp2	⊢ ((φ ∧ ψ ∧ χ) → ψ)

Proof of Theorem 3simp2

Step	Hyp	Ref	Expression
1		3simpa 591	. 2 ⊢ ((φ ∧ ψ ∧ χ) → (φ ∧ ψ))
2	1	pm3.27d 262	1 ⊢ ((φ ∧ ψ ∧ χ) → ψ)

Syntax hints:   → wi 2   ∧ w3a 581

This theorem is referenced by:  nlim0 2282  abianfplem 2999  divdiv23t 4271  ltdivmult 4408  qbtwnre 4650  sqrlem20 4750  atexch 5769  atcvatlem 5770

This theorem was proved from axioms:  ax-1 3  ax-2 4  ax-3 5  ax-mp 6

This theorem depends on definitions:  df-bi 128  df-an 198  df-3an 583

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