BoxCSEqvBox

⊢ w ∧ ( w)∗≡ w BoxCSEqvBox

Proof for ⊃ :

1
⊢ ( w)∗≡empty ∨ ( w ∧more) ; ( w)∗
2
⊢ ( w)∗⊃empty ∨ ( w ∧more) ; ( w)∗
1,Prop
3
⊢ w ∧ ( w)∗⊃ w

qed

Proof for ⊂:

1
⊢ w ⊃ w
2
⊢ w ⊃ ( w)∗
3
⊢ w ⊃ w ∧ ( w)∗
1, 2,Prop

qed

2024-08-03
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