Metamath Proof Explorer


Theorem mdandyvrx13

Description: Given the exclusivities set in the hypotheses, there exist a proof where ch, th, ta, et exclude ze, si accordingly. (Contributed by Jarvin Udandy, 7-Sep-2016)

Ref Expression
Hypotheses mdandyvrx13.1 ⊢ φ ⊻ ζ
mdandyvrx13.2 ⊢ ψ ⊻ σ
mdandyvrx13.3 ⊢ χ ↔ ψ
mdandyvrx13.4 ⊢ θ ↔ φ
mdandyvrx13.5 ⊢ τ ↔ ψ
mdandyvrx13.6 ⊢ η ↔ ψ
Assertion mdandyvrx13 ⊢ χ ⊻ σ ∧ θ ⊻ ζ ∧ τ ⊻ σ ∧ η ⊻ σ

Proof

Step Hyp Ref Expression
1 mdandyvrx13.1 ⊢ φ ⊻ ζ
2 mdandyvrx13.2 ⊢ ψ ⊻ σ
3 mdandyvrx13.3 ⊢ χ ↔ ψ
4 mdandyvrx13.4 ⊢ θ ↔ φ
5 mdandyvrx13.5 ⊢ τ ↔ ψ
6 mdandyvrx13.6 ⊢ η ↔ ψ
7 2 1 3 4 5 6 mdandyvrx2 ⊢ χ ⊻ σ ∧ θ ⊻ ζ ∧ τ ⊻ σ ∧ η ⊻ σ