This is an inofficial mirror of http://metamath.tirix.org for personal testing of a visualizer extension only.
Description: The dual modular pair property expressed in terms of the modular pair property, that hold in Hilbert lattices. Remark 29.6 of MaedaMaeda p. 130. (Contributed by NM, 27-Apr-2006) (New usage is discouraged.)
| Ref | Expression | ||
|---|---|---|---|
| Assertion | dmdmd | ⊢ ( ( 𝐴 ∈ Cℋ ∧ 𝐵 ∈ Cℋ ) → ( 𝐴 𝑀ℋ* 𝐵 ↔ ( ⊥ ‘ 𝐴 ) 𝑀ℋ ( ⊥ ‘ 𝐵 ) ) ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | sseq1 | ⊢ ( 𝑦 = ( ⊥ ‘ 𝑥 ) → ( 𝑦 ⊆ ( ⊥ ‘ 𝐵 ) ↔ ( ⊥ ‘ 𝑥 ) ⊆ ( ⊥ ‘ 𝐵 ) ) ) | |
| 2 | oveq1 | ⊢ ( 𝑦 = ( ⊥ ‘ 𝑥 ) → ( 𝑦 ∨ℋ ( ⊥ ‘ 𝐴 ) ) = ( ( ⊥ ‘ 𝑥 ) ∨ℋ ( ⊥ ‘ 𝐴 ) ) ) | |
| 3 | 2 | ineq1d | ⊢ ( 𝑦 = ( ⊥ ‘ 𝑥 ) → ( ( 𝑦 ∨ℋ ( ⊥ ‘ 𝐴 ) ) ∩ ( ⊥ ‘ 𝐵 ) ) = ( ( ( ⊥ ‘ 𝑥 ) ∨ℋ ( ⊥ ‘ 𝐴 ) ) ∩ ( ⊥ ‘ 𝐵 ) ) ) |
| 4 | oveq1 | ⊢ ( 𝑦 = ( ⊥ ‘ 𝑥 ) → ( 𝑦 ∨ℋ ( ( ⊥ ‘ 𝐴 ) ∩ ( ⊥ ‘ 𝐵 ) ) ) = ( ( ⊥ ‘ 𝑥 ) ∨ℋ ( ( ⊥ ‘ 𝐴 ) ∩ ( ⊥ ‘ 𝐵 ) ) ) ) | |
| 5 | 3 4 | eqeq12d | ⊢ ( 𝑦 = ( ⊥ ‘ 𝑥 ) → ( ( ( 𝑦 ∨ℋ ( ⊥ ‘ 𝐴 ) ) ∩ ( ⊥ ‘ 𝐵 ) ) = ( 𝑦 ∨ℋ ( ( ⊥ ‘ 𝐴 ) ∩ ( ⊥ ‘ 𝐵 ) ) ) ↔ ( ( ( ⊥ ‘ 𝑥 ) ∨ℋ ( ⊥ ‘ 𝐴 ) ) ∩ ( ⊥ ‘ 𝐵 ) ) = ( ( ⊥ ‘ 𝑥 ) ∨ℋ ( ( ⊥ ‘ 𝐴 ) ∩ ( ⊥ ‘ 𝐵 ) ) ) ) ) |
| 6 | 1 5 | imbi12d | ⊢ ( 𝑦 = ( ⊥ ‘ 𝑥 ) → ( ( 𝑦 ⊆ ( ⊥ ‘ 𝐵 ) → ( ( 𝑦 ∨ℋ ( ⊥ ‘ 𝐴 ) ) ∩ ( ⊥ ‘ 𝐵 ) ) = ( 𝑦 ∨ℋ ( ( ⊥ ‘ 𝐴 ) ∩ ( ⊥ ‘ 𝐵 ) ) ) ) ↔ ( ( ⊥ ‘ 𝑥 ) ⊆ ( ⊥ ‘ 𝐵 ) → ( ( ( ⊥ ‘ 𝑥 ) ∨ℋ ( ⊥ ‘ 𝐴 ) ) ∩ ( ⊥ ‘ 𝐵 ) ) = ( ( ⊥ ‘ 𝑥 ) ∨ℋ ( ( ⊥ ‘ 𝐴 ) ∩ ( ⊥ ‘ 𝐵 ) ) ) ) ) ) |
| 7 | 6 | rspccv | ⊢ ( ∀ 𝑦 ∈ Cℋ ( 𝑦 ⊆ ( ⊥ ‘ 𝐵 ) → ( ( 𝑦 ∨ℋ ( ⊥ ‘ 𝐴 ) ) ∩ ( ⊥ ‘ 𝐵 ) ) = ( 𝑦 ∨ℋ ( ( ⊥ ‘ 𝐴 ) ∩ ( ⊥ ‘ 𝐵 ) ) ) ) → ( ( ⊥ ‘ 𝑥 ) ∈ Cℋ → ( ( ⊥ ‘ 𝑥 ) ⊆ ( ⊥ ‘ 𝐵 ) → ( ( ( ⊥ ‘ 𝑥 ) ∨ℋ ( ⊥ ‘ 𝐴 ) ) ∩ ( ⊥ ‘ 𝐵 ) ) = ( ( ⊥ ‘ 𝑥 ) ∨ℋ ( ( ⊥ ‘ 𝐴 ) ∩ ( ⊥ ‘ 𝐵 ) ) ) ) ) ) |
| 8 | choccl | ⊢ ( 𝑥 ∈ Cℋ → ( ⊥ ‘ 𝑥 ) ∈ Cℋ ) | |
| 9 | 8 | imim1i | ⊢ ( ( ( ⊥ ‘ 𝑥 ) ∈ Cℋ → ( ( ⊥ ‘ 𝑥 ) ⊆ ( ⊥ ‘ 𝐵 ) → ( ( ( ⊥ ‘ 𝑥 ) ∨ℋ ( ⊥ ‘ 𝐴 ) ) ∩ ( ⊥ ‘ 𝐵 ) ) = ( ( ⊥ ‘ 𝑥 ) ∨ℋ ( ( ⊥ ‘ 𝐴 ) ∩ ( ⊥ ‘ 𝐵 ) ) ) ) ) → ( 𝑥 ∈ Cℋ → ( ( ⊥ ‘ 𝑥 ) ⊆ ( ⊥ ‘ 𝐵 ) → ( ( ( ⊥ ‘ 𝑥 ) ∨ℋ ( ⊥ ‘ 𝐴 ) ) ∩ ( ⊥ ‘ 𝐵 ) ) = ( ( ⊥ ‘ 𝑥 ) ∨ℋ ( ( ⊥ ‘ 𝐴 ) ∩ ( ⊥ ‘ 𝐵 ) ) ) ) ) ) |
| 10 | 9 | com12 | ⊢ ( 𝑥 ∈ Cℋ → ( ( ( ⊥ ‘ 𝑥 ) ∈ Cℋ → ( ( ⊥ ‘ 𝑥 ) ⊆ ( ⊥ ‘ 𝐵 ) → ( ( ( ⊥ ‘ 𝑥 ) ∨ℋ ( ⊥ ‘ 𝐴 ) ) ∩ ( ⊥ ‘ 𝐵 ) ) = ( ( ⊥ ‘ 𝑥 ) ∨ℋ ( ( ⊥ ‘ 𝐴 ) ∩ ( ⊥ ‘ 𝐵 ) ) ) ) ) → ( ( ⊥ ‘ 𝑥 ) ⊆ ( ⊥ ‘ 𝐵 ) → ( ( ( ⊥ ‘ 𝑥 ) ∨ℋ ( ⊥ ‘ 𝐴 ) ) ∩ ( ⊥ ‘ 𝐵 ) ) = ( ( ⊥ ‘ 𝑥 ) ∨ℋ ( ( ⊥ ‘ 𝐴 ) ∩ ( ⊥ ‘ 𝐵 ) ) ) ) ) ) |
| 11 | 10 | adantl | ⊢ ( ( ( 𝐴 ∈ Cℋ ∧ 𝐵 ∈ Cℋ ) ∧ 𝑥 ∈ Cℋ ) → ( ( ( ⊥ ‘ 𝑥 ) ∈ Cℋ → ( ( ⊥ ‘ 𝑥 ) ⊆ ( ⊥ ‘ 𝐵 ) → ( ( ( ⊥ ‘ 𝑥 ) ∨ℋ ( ⊥ ‘ 𝐴 ) ) ∩ ( ⊥ ‘ 𝐵 ) ) = ( ( ⊥ ‘ 𝑥 ) ∨ℋ ( ( ⊥ ‘ 𝐴 ) ∩ ( ⊥ ‘ 𝐵 ) ) ) ) ) → ( ( ⊥ ‘ 𝑥 ) ⊆ ( ⊥ ‘ 𝐵 ) → ( ( ( ⊥ ‘ 𝑥 ) ∨ℋ ( ⊥ ‘ 𝐴 ) ) ∩ ( ⊥ ‘ 𝐵 ) ) = ( ( ⊥ ‘ 𝑥 ) ∨ℋ ( ( ⊥ ‘ 𝐴 ) ∩ ( ⊥ ‘ 𝐵 ) ) ) ) ) ) |
| 12 | chsscon3 | ⊢ ( ( 𝐵 ∈ Cℋ ∧ 𝑥 ∈ Cℋ ) → ( 𝐵 ⊆ 𝑥 ↔ ( ⊥ ‘ 𝑥 ) ⊆ ( ⊥ ‘ 𝐵 ) ) ) | |
| 13 | 12 | biimpd | ⊢ ( ( 𝐵 ∈ Cℋ ∧ 𝑥 ∈ Cℋ ) → ( 𝐵 ⊆ 𝑥 → ( ⊥ ‘ 𝑥 ) ⊆ ( ⊥ ‘ 𝐵 ) ) ) |
| 14 | 13 | adantll | ⊢ ( ( ( 𝐴 ∈ Cℋ ∧ 𝐵 ∈ Cℋ ) ∧ 𝑥 ∈ Cℋ ) → ( 𝐵 ⊆ 𝑥 → ( ⊥ ‘ 𝑥 ) ⊆ ( ⊥ ‘ 𝐵 ) ) ) |
| 15 | fveq2 | ⊢ ( ( ( ( ⊥ ‘ 𝑥 ) ∨ℋ ( ⊥ ‘ 𝐴 ) ) ∩ ( ⊥ ‘ 𝐵 ) ) = ( ( ⊥ ‘ 𝑥 ) ∨ℋ ( ( ⊥ ‘ 𝐴 ) ∩ ( ⊥ ‘ 𝐵 ) ) ) → ( ⊥ ‘ ( ( ( ⊥ ‘ 𝑥 ) ∨ℋ ( ⊥ ‘ 𝐴 ) ) ∩ ( ⊥ ‘ 𝐵 ) ) ) = ( ⊥ ‘ ( ( ⊥ ‘ 𝑥 ) ∨ℋ ( ( ⊥ ‘ 𝐴 ) ∩ ( ⊥ ‘ 𝐵 ) ) ) ) ) | |
| 16 | choccl | ⊢ ( 𝐴 ∈ Cℋ → ( ⊥ ‘ 𝐴 ) ∈ Cℋ ) | |
| 17 | chjcl | ⊢ ( ( ( ⊥ ‘ 𝑥 ) ∈ Cℋ ∧ ( ⊥ ‘ 𝐴 ) ∈ Cℋ ) → ( ( ⊥ ‘ 𝑥 ) ∨ℋ ( ⊥ ‘ 𝐴 ) ) ∈ Cℋ ) | |
| 18 | 8 16 17 | syl2an | ⊢ ( ( 𝑥 ∈ Cℋ ∧ 𝐴 ∈ Cℋ ) → ( ( ⊥ ‘ 𝑥 ) ∨ℋ ( ⊥ ‘ 𝐴 ) ) ∈ Cℋ ) |
| 19 | chdmm3 | ⊢ ( ( ( ( ⊥ ‘ 𝑥 ) ∨ℋ ( ⊥ ‘ 𝐴 ) ) ∈ Cℋ ∧ 𝐵 ∈ Cℋ ) → ( ⊥ ‘ ( ( ( ⊥ ‘ 𝑥 ) ∨ℋ ( ⊥ ‘ 𝐴 ) ) ∩ ( ⊥ ‘ 𝐵 ) ) ) = ( ( ⊥ ‘ ( ( ⊥ ‘ 𝑥 ) ∨ℋ ( ⊥ ‘ 𝐴 ) ) ) ∨ℋ 𝐵 ) ) | |
| 20 | 18 19 | sylan | ⊢ ( ( ( 𝑥 ∈ Cℋ ∧ 𝐴 ∈ Cℋ ) ∧ 𝐵 ∈ Cℋ ) → ( ⊥ ‘ ( ( ( ⊥ ‘ 𝑥 ) ∨ℋ ( ⊥ ‘ 𝐴 ) ) ∩ ( ⊥ ‘ 𝐵 ) ) ) = ( ( ⊥ ‘ ( ( ⊥ ‘ 𝑥 ) ∨ℋ ( ⊥ ‘ 𝐴 ) ) ) ∨ℋ 𝐵 ) ) |
| 21 | chdmj4 | ⊢ ( ( 𝑥 ∈ Cℋ ∧ 𝐴 ∈ Cℋ ) → ( ⊥ ‘ ( ( ⊥ ‘ 𝑥 ) ∨ℋ ( ⊥ ‘ 𝐴 ) ) ) = ( 𝑥 ∩ 𝐴 ) ) | |
| 22 | 21 | adantr | ⊢ ( ( ( 𝑥 ∈ Cℋ ∧ 𝐴 ∈ Cℋ ) ∧ 𝐵 ∈ Cℋ ) → ( ⊥ ‘ ( ( ⊥ ‘ 𝑥 ) ∨ℋ ( ⊥ ‘ 𝐴 ) ) ) = ( 𝑥 ∩ 𝐴 ) ) |
| 23 | 22 | oveq1d | ⊢ ( ( ( 𝑥 ∈ Cℋ ∧ 𝐴 ∈ Cℋ ) ∧ 𝐵 ∈ Cℋ ) → ( ( ⊥ ‘ ( ( ⊥ ‘ 𝑥 ) ∨ℋ ( ⊥ ‘ 𝐴 ) ) ) ∨ℋ 𝐵 ) = ( ( 𝑥 ∩ 𝐴 ) ∨ℋ 𝐵 ) ) |
| 24 | 20 23 | eqtrd | ⊢ ( ( ( 𝑥 ∈ Cℋ ∧ 𝐴 ∈ Cℋ ) ∧ 𝐵 ∈ Cℋ ) → ( ⊥ ‘ ( ( ( ⊥ ‘ 𝑥 ) ∨ℋ ( ⊥ ‘ 𝐴 ) ) ∩ ( ⊥ ‘ 𝐵 ) ) ) = ( ( 𝑥 ∩ 𝐴 ) ∨ℋ 𝐵 ) ) |
| 25 | 24 | anasss | ⊢ ( ( 𝑥 ∈ Cℋ ∧ ( 𝐴 ∈ Cℋ ∧ 𝐵 ∈ Cℋ ) ) → ( ⊥ ‘ ( ( ( ⊥ ‘ 𝑥 ) ∨ℋ ( ⊥ ‘ 𝐴 ) ) ∩ ( ⊥ ‘ 𝐵 ) ) ) = ( ( 𝑥 ∩ 𝐴 ) ∨ℋ 𝐵 ) ) |
| 26 | choccl | ⊢ ( 𝐵 ∈ Cℋ → ( ⊥ ‘ 𝐵 ) ∈ Cℋ ) | |
| 27 | chincl | ⊢ ( ( ( ⊥ ‘ 𝐴 ) ∈ Cℋ ∧ ( ⊥ ‘ 𝐵 ) ∈ Cℋ ) → ( ( ⊥ ‘ 𝐴 ) ∩ ( ⊥ ‘ 𝐵 ) ) ∈ Cℋ ) | |
| 28 | 16 26 27 | syl2an | ⊢ ( ( 𝐴 ∈ Cℋ ∧ 𝐵 ∈ Cℋ ) → ( ( ⊥ ‘ 𝐴 ) ∩ ( ⊥ ‘ 𝐵 ) ) ∈ Cℋ ) |
| 29 | chdmj2 | ⊢ ( ( 𝑥 ∈ Cℋ ∧ ( ( ⊥ ‘ 𝐴 ) ∩ ( ⊥ ‘ 𝐵 ) ) ∈ Cℋ ) → ( ⊥ ‘ ( ( ⊥ ‘ 𝑥 ) ∨ℋ ( ( ⊥ ‘ 𝐴 ) ∩ ( ⊥ ‘ 𝐵 ) ) ) ) = ( 𝑥 ∩ ( ⊥ ‘ ( ( ⊥ ‘ 𝐴 ) ∩ ( ⊥ ‘ 𝐵 ) ) ) ) ) | |
| 30 | 28 29 | sylan2 | ⊢ ( ( 𝑥 ∈ Cℋ ∧ ( 𝐴 ∈ Cℋ ∧ 𝐵 ∈ Cℋ ) ) → ( ⊥ ‘ ( ( ⊥ ‘ 𝑥 ) ∨ℋ ( ( ⊥ ‘ 𝐴 ) ∩ ( ⊥ ‘ 𝐵 ) ) ) ) = ( 𝑥 ∩ ( ⊥ ‘ ( ( ⊥ ‘ 𝐴 ) ∩ ( ⊥ ‘ 𝐵 ) ) ) ) ) |
| 31 | chdmm4 | ⊢ ( ( 𝐴 ∈ Cℋ ∧ 𝐵 ∈ Cℋ ) → ( ⊥ ‘ ( ( ⊥ ‘ 𝐴 ) ∩ ( ⊥ ‘ 𝐵 ) ) ) = ( 𝐴 ∨ℋ 𝐵 ) ) | |
| 32 | 31 | adantl | ⊢ ( ( 𝑥 ∈ Cℋ ∧ ( 𝐴 ∈ Cℋ ∧ 𝐵 ∈ Cℋ ) ) → ( ⊥ ‘ ( ( ⊥ ‘ 𝐴 ) ∩ ( ⊥ ‘ 𝐵 ) ) ) = ( 𝐴 ∨ℋ 𝐵 ) ) |
| 33 | 32 | ineq2d | ⊢ ( ( 𝑥 ∈ Cℋ ∧ ( 𝐴 ∈ Cℋ ∧ 𝐵 ∈ Cℋ ) ) → ( 𝑥 ∩ ( ⊥ ‘ ( ( ⊥ ‘ 𝐴 ) ∩ ( ⊥ ‘ 𝐵 ) ) ) ) = ( 𝑥 ∩ ( 𝐴 ∨ℋ 𝐵 ) ) ) |
| 34 | 30 33 | eqtrd | ⊢ ( ( 𝑥 ∈ Cℋ ∧ ( 𝐴 ∈ Cℋ ∧ 𝐵 ∈ Cℋ ) ) → ( ⊥ ‘ ( ( ⊥ ‘ 𝑥 ) ∨ℋ ( ( ⊥ ‘ 𝐴 ) ∩ ( ⊥ ‘ 𝐵 ) ) ) ) = ( 𝑥 ∩ ( 𝐴 ∨ℋ 𝐵 ) ) ) |
| 35 | 25 34 | eqeq12d | ⊢ ( ( 𝑥 ∈ Cℋ ∧ ( 𝐴 ∈ Cℋ ∧ 𝐵 ∈ Cℋ ) ) → ( ( ⊥ ‘ ( ( ( ⊥ ‘ 𝑥 ) ∨ℋ ( ⊥ ‘ 𝐴 ) ) ∩ ( ⊥ ‘ 𝐵 ) ) ) = ( ⊥ ‘ ( ( ⊥ ‘ 𝑥 ) ∨ℋ ( ( ⊥ ‘ 𝐴 ) ∩ ( ⊥ ‘ 𝐵 ) ) ) ) ↔ ( ( 𝑥 ∩ 𝐴 ) ∨ℋ 𝐵 ) = ( 𝑥 ∩ ( 𝐴 ∨ℋ 𝐵 ) ) ) ) |
| 36 | 35 | ancoms | ⊢ ( ( ( 𝐴 ∈ Cℋ ∧ 𝐵 ∈ Cℋ ) ∧ 𝑥 ∈ Cℋ ) → ( ( ⊥ ‘ ( ( ( ⊥ ‘ 𝑥 ) ∨ℋ ( ⊥ ‘ 𝐴 ) ) ∩ ( ⊥ ‘ 𝐵 ) ) ) = ( ⊥ ‘ ( ( ⊥ ‘ 𝑥 ) ∨ℋ ( ( ⊥ ‘ 𝐴 ) ∩ ( ⊥ ‘ 𝐵 ) ) ) ) ↔ ( ( 𝑥 ∩ 𝐴 ) ∨ℋ 𝐵 ) = ( 𝑥 ∩ ( 𝐴 ∨ℋ 𝐵 ) ) ) ) |
| 37 | 15 36 | imbitrid | ⊢ ( ( ( 𝐴 ∈ Cℋ ∧ 𝐵 ∈ Cℋ ) ∧ 𝑥 ∈ Cℋ ) → ( ( ( ( ⊥ ‘ 𝑥 ) ∨ℋ ( ⊥ ‘ 𝐴 ) ) ∩ ( ⊥ ‘ 𝐵 ) ) = ( ( ⊥ ‘ 𝑥 ) ∨ℋ ( ( ⊥ ‘ 𝐴 ) ∩ ( ⊥ ‘ 𝐵 ) ) ) → ( ( 𝑥 ∩ 𝐴 ) ∨ℋ 𝐵 ) = ( 𝑥 ∩ ( 𝐴 ∨ℋ 𝐵 ) ) ) ) |
| 38 | 14 37 | imim12d | ⊢ ( ( ( 𝐴 ∈ Cℋ ∧ 𝐵 ∈ Cℋ ) ∧ 𝑥 ∈ Cℋ ) → ( ( ( ⊥ ‘ 𝑥 ) ⊆ ( ⊥ ‘ 𝐵 ) → ( ( ( ⊥ ‘ 𝑥 ) ∨ℋ ( ⊥ ‘ 𝐴 ) ) ∩ ( ⊥ ‘ 𝐵 ) ) = ( ( ⊥ ‘ 𝑥 ) ∨ℋ ( ( ⊥ ‘ 𝐴 ) ∩ ( ⊥ ‘ 𝐵 ) ) ) ) → ( 𝐵 ⊆ 𝑥 → ( ( 𝑥 ∩ 𝐴 ) ∨ℋ 𝐵 ) = ( 𝑥 ∩ ( 𝐴 ∨ℋ 𝐵 ) ) ) ) ) |
| 39 | 11 38 | syld | ⊢ ( ( ( 𝐴 ∈ Cℋ ∧ 𝐵 ∈ Cℋ ) ∧ 𝑥 ∈ Cℋ ) → ( ( ( ⊥ ‘ 𝑥 ) ∈ Cℋ → ( ( ⊥ ‘ 𝑥 ) ⊆ ( ⊥ ‘ 𝐵 ) → ( ( ( ⊥ ‘ 𝑥 ) ∨ℋ ( ⊥ ‘ 𝐴 ) ) ∩ ( ⊥ ‘ 𝐵 ) ) = ( ( ⊥ ‘ 𝑥 ) ∨ℋ ( ( ⊥ ‘ 𝐴 ) ∩ ( ⊥ ‘ 𝐵 ) ) ) ) ) → ( 𝐵 ⊆ 𝑥 → ( ( 𝑥 ∩ 𝐴 ) ∨ℋ 𝐵 ) = ( 𝑥 ∩ ( 𝐴 ∨ℋ 𝐵 ) ) ) ) ) |
| 40 | 39 | ex | ⊢ ( ( 𝐴 ∈ Cℋ ∧ 𝐵 ∈ Cℋ ) → ( 𝑥 ∈ Cℋ → ( ( ( ⊥ ‘ 𝑥 ) ∈ Cℋ → ( ( ⊥ ‘ 𝑥 ) ⊆ ( ⊥ ‘ 𝐵 ) → ( ( ( ⊥ ‘ 𝑥 ) ∨ℋ ( ⊥ ‘ 𝐴 ) ) ∩ ( ⊥ ‘ 𝐵 ) ) = ( ( ⊥ ‘ 𝑥 ) ∨ℋ ( ( ⊥ ‘ 𝐴 ) ∩ ( ⊥ ‘ 𝐵 ) ) ) ) ) → ( 𝐵 ⊆ 𝑥 → ( ( 𝑥 ∩ 𝐴 ) ∨ℋ 𝐵 ) = ( 𝑥 ∩ ( 𝐴 ∨ℋ 𝐵 ) ) ) ) ) ) |
| 41 | 40 | com23 | ⊢ ( ( 𝐴 ∈ Cℋ ∧ 𝐵 ∈ Cℋ ) → ( ( ( ⊥ ‘ 𝑥 ) ∈ Cℋ → ( ( ⊥ ‘ 𝑥 ) ⊆ ( ⊥ ‘ 𝐵 ) → ( ( ( ⊥ ‘ 𝑥 ) ∨ℋ ( ⊥ ‘ 𝐴 ) ) ∩ ( ⊥ ‘ 𝐵 ) ) = ( ( ⊥ ‘ 𝑥 ) ∨ℋ ( ( ⊥ ‘ 𝐴 ) ∩ ( ⊥ ‘ 𝐵 ) ) ) ) ) → ( 𝑥 ∈ Cℋ → ( 𝐵 ⊆ 𝑥 → ( ( 𝑥 ∩ 𝐴 ) ∨ℋ 𝐵 ) = ( 𝑥 ∩ ( 𝐴 ∨ℋ 𝐵 ) ) ) ) ) ) |
| 42 | 7 41 | syl5 | ⊢ ( ( 𝐴 ∈ Cℋ ∧ 𝐵 ∈ Cℋ ) → ( ∀ 𝑦 ∈ Cℋ ( 𝑦 ⊆ ( ⊥ ‘ 𝐵 ) → ( ( 𝑦 ∨ℋ ( ⊥ ‘ 𝐴 ) ) ∩ ( ⊥ ‘ 𝐵 ) ) = ( 𝑦 ∨ℋ ( ( ⊥ ‘ 𝐴 ) ∩ ( ⊥ ‘ 𝐵 ) ) ) ) → ( 𝑥 ∈ Cℋ → ( 𝐵 ⊆ 𝑥 → ( ( 𝑥 ∩ 𝐴 ) ∨ℋ 𝐵 ) = ( 𝑥 ∩ ( 𝐴 ∨ℋ 𝐵 ) ) ) ) ) ) |
| 43 | 42 | ralrimdv | ⊢ ( ( 𝐴 ∈ Cℋ ∧ 𝐵 ∈ Cℋ ) → ( ∀ 𝑦 ∈ Cℋ ( 𝑦 ⊆ ( ⊥ ‘ 𝐵 ) → ( ( 𝑦 ∨ℋ ( ⊥ ‘ 𝐴 ) ) ∩ ( ⊥ ‘ 𝐵 ) ) = ( 𝑦 ∨ℋ ( ( ⊥ ‘ 𝐴 ) ∩ ( ⊥ ‘ 𝐵 ) ) ) ) → ∀ 𝑥 ∈ Cℋ ( 𝐵 ⊆ 𝑥 → ( ( 𝑥 ∩ 𝐴 ) ∨ℋ 𝐵 ) = ( 𝑥 ∩ ( 𝐴 ∨ℋ 𝐵 ) ) ) ) ) |
| 44 | sseq2 | ⊢ ( 𝑥 = ( ⊥ ‘ 𝑦 ) → ( 𝐵 ⊆ 𝑥 ↔ 𝐵 ⊆ ( ⊥ ‘ 𝑦 ) ) ) | |
| 45 | ineq1 | ⊢ ( 𝑥 = ( ⊥ ‘ 𝑦 ) → ( 𝑥 ∩ 𝐴 ) = ( ( ⊥ ‘ 𝑦 ) ∩ 𝐴 ) ) | |
| 46 | 45 | oveq1d | ⊢ ( 𝑥 = ( ⊥ ‘ 𝑦 ) → ( ( 𝑥 ∩ 𝐴 ) ∨ℋ 𝐵 ) = ( ( ( ⊥ ‘ 𝑦 ) ∩ 𝐴 ) ∨ℋ 𝐵 ) ) |
| 47 | ineq1 | ⊢ ( 𝑥 = ( ⊥ ‘ 𝑦 ) → ( 𝑥 ∩ ( 𝐴 ∨ℋ 𝐵 ) ) = ( ( ⊥ ‘ 𝑦 ) ∩ ( 𝐴 ∨ℋ 𝐵 ) ) ) | |
| 48 | 46 47 | eqeq12d | ⊢ ( 𝑥 = ( ⊥ ‘ 𝑦 ) → ( ( ( 𝑥 ∩ 𝐴 ) ∨ℋ 𝐵 ) = ( 𝑥 ∩ ( 𝐴 ∨ℋ 𝐵 ) ) ↔ ( ( ( ⊥ ‘ 𝑦 ) ∩ 𝐴 ) ∨ℋ 𝐵 ) = ( ( ⊥ ‘ 𝑦 ) ∩ ( 𝐴 ∨ℋ 𝐵 ) ) ) ) |
| 49 | 44 48 | imbi12d | ⊢ ( 𝑥 = ( ⊥ ‘ 𝑦 ) → ( ( 𝐵 ⊆ 𝑥 → ( ( 𝑥 ∩ 𝐴 ) ∨ℋ 𝐵 ) = ( 𝑥 ∩ ( 𝐴 ∨ℋ 𝐵 ) ) ) ↔ ( 𝐵 ⊆ ( ⊥ ‘ 𝑦 ) → ( ( ( ⊥ ‘ 𝑦 ) ∩ 𝐴 ) ∨ℋ 𝐵 ) = ( ( ⊥ ‘ 𝑦 ) ∩ ( 𝐴 ∨ℋ 𝐵 ) ) ) ) ) |
| 50 | 49 | rspccv | ⊢ ( ∀ 𝑥 ∈ Cℋ ( 𝐵 ⊆ 𝑥 → ( ( 𝑥 ∩ 𝐴 ) ∨ℋ 𝐵 ) = ( 𝑥 ∩ ( 𝐴 ∨ℋ 𝐵 ) ) ) → ( ( ⊥ ‘ 𝑦 ) ∈ Cℋ → ( 𝐵 ⊆ ( ⊥ ‘ 𝑦 ) → ( ( ( ⊥ ‘ 𝑦 ) ∩ 𝐴 ) ∨ℋ 𝐵 ) = ( ( ⊥ ‘ 𝑦 ) ∩ ( 𝐴 ∨ℋ 𝐵 ) ) ) ) ) |
| 51 | choccl | ⊢ ( 𝑦 ∈ Cℋ → ( ⊥ ‘ 𝑦 ) ∈ Cℋ ) | |
| 52 | 51 | imim1i | ⊢ ( ( ( ⊥ ‘ 𝑦 ) ∈ Cℋ → ( 𝐵 ⊆ ( ⊥ ‘ 𝑦 ) → ( ( ( ⊥ ‘ 𝑦 ) ∩ 𝐴 ) ∨ℋ 𝐵 ) = ( ( ⊥ ‘ 𝑦 ) ∩ ( 𝐴 ∨ℋ 𝐵 ) ) ) ) → ( 𝑦 ∈ Cℋ → ( 𝐵 ⊆ ( ⊥ ‘ 𝑦 ) → ( ( ( ⊥ ‘ 𝑦 ) ∩ 𝐴 ) ∨ℋ 𝐵 ) = ( ( ⊥ ‘ 𝑦 ) ∩ ( 𝐴 ∨ℋ 𝐵 ) ) ) ) ) |
| 53 | 52 | com12 | ⊢ ( 𝑦 ∈ Cℋ → ( ( ( ⊥ ‘ 𝑦 ) ∈ Cℋ → ( 𝐵 ⊆ ( ⊥ ‘ 𝑦 ) → ( ( ( ⊥ ‘ 𝑦 ) ∩ 𝐴 ) ∨ℋ 𝐵 ) = ( ( ⊥ ‘ 𝑦 ) ∩ ( 𝐴 ∨ℋ 𝐵 ) ) ) ) → ( 𝐵 ⊆ ( ⊥ ‘ 𝑦 ) → ( ( ( ⊥ ‘ 𝑦 ) ∩ 𝐴 ) ∨ℋ 𝐵 ) = ( ( ⊥ ‘ 𝑦 ) ∩ ( 𝐴 ∨ℋ 𝐵 ) ) ) ) ) |
| 54 | 53 | adantl | ⊢ ( ( ( 𝐴 ∈ Cℋ ∧ 𝐵 ∈ Cℋ ) ∧ 𝑦 ∈ Cℋ ) → ( ( ( ⊥ ‘ 𝑦 ) ∈ Cℋ → ( 𝐵 ⊆ ( ⊥ ‘ 𝑦 ) → ( ( ( ⊥ ‘ 𝑦 ) ∩ 𝐴 ) ∨ℋ 𝐵 ) = ( ( ⊥ ‘ 𝑦 ) ∩ ( 𝐴 ∨ℋ 𝐵 ) ) ) ) → ( 𝐵 ⊆ ( ⊥ ‘ 𝑦 ) → ( ( ( ⊥ ‘ 𝑦 ) ∩ 𝐴 ) ∨ℋ 𝐵 ) = ( ( ⊥ ‘ 𝑦 ) ∩ ( 𝐴 ∨ℋ 𝐵 ) ) ) ) ) |
| 55 | chsscon2 | ⊢ ( ( 𝐵 ∈ Cℋ ∧ 𝑦 ∈ Cℋ ) → ( 𝐵 ⊆ ( ⊥ ‘ 𝑦 ) ↔ 𝑦 ⊆ ( ⊥ ‘ 𝐵 ) ) ) | |
| 56 | 55 | biimprd | ⊢ ( ( 𝐵 ∈ Cℋ ∧ 𝑦 ∈ Cℋ ) → ( 𝑦 ⊆ ( ⊥ ‘ 𝐵 ) → 𝐵 ⊆ ( ⊥ ‘ 𝑦 ) ) ) |
| 57 | 56 | adantll | ⊢ ( ( ( 𝐴 ∈ Cℋ ∧ 𝐵 ∈ Cℋ ) ∧ 𝑦 ∈ Cℋ ) → ( 𝑦 ⊆ ( ⊥ ‘ 𝐵 ) → 𝐵 ⊆ ( ⊥ ‘ 𝑦 ) ) ) |
| 58 | fveq2 | ⊢ ( ( ( ( ⊥ ‘ 𝑦 ) ∩ 𝐴 ) ∨ℋ 𝐵 ) = ( ( ⊥ ‘ 𝑦 ) ∩ ( 𝐴 ∨ℋ 𝐵 ) ) → ( ⊥ ‘ ( ( ( ⊥ ‘ 𝑦 ) ∩ 𝐴 ) ∨ℋ 𝐵 ) ) = ( ⊥ ‘ ( ( ⊥ ‘ 𝑦 ) ∩ ( 𝐴 ∨ℋ 𝐵 ) ) ) ) | |
| 59 | chincl | ⊢ ( ( ( ⊥ ‘ 𝑦 ) ∈ Cℋ ∧ 𝐴 ∈ Cℋ ) → ( ( ⊥ ‘ 𝑦 ) ∩ 𝐴 ) ∈ Cℋ ) | |
| 60 | 51 59 | sylan | ⊢ ( ( 𝑦 ∈ Cℋ ∧ 𝐴 ∈ Cℋ ) → ( ( ⊥ ‘ 𝑦 ) ∩ 𝐴 ) ∈ Cℋ ) |
| 61 | chdmj1 | ⊢ ( ( ( ( ⊥ ‘ 𝑦 ) ∩ 𝐴 ) ∈ Cℋ ∧ 𝐵 ∈ Cℋ ) → ( ⊥ ‘ ( ( ( ⊥ ‘ 𝑦 ) ∩ 𝐴 ) ∨ℋ 𝐵 ) ) = ( ( ⊥ ‘ ( ( ⊥ ‘ 𝑦 ) ∩ 𝐴 ) ) ∩ ( ⊥ ‘ 𝐵 ) ) ) | |
| 62 | 60 61 | sylan | ⊢ ( ( ( 𝑦 ∈ Cℋ ∧ 𝐴 ∈ Cℋ ) ∧ 𝐵 ∈ Cℋ ) → ( ⊥ ‘ ( ( ( ⊥ ‘ 𝑦 ) ∩ 𝐴 ) ∨ℋ 𝐵 ) ) = ( ( ⊥ ‘ ( ( ⊥ ‘ 𝑦 ) ∩ 𝐴 ) ) ∩ ( ⊥ ‘ 𝐵 ) ) ) |
| 63 | chdmm2 | ⊢ ( ( 𝑦 ∈ Cℋ ∧ 𝐴 ∈ Cℋ ) → ( ⊥ ‘ ( ( ⊥ ‘ 𝑦 ) ∩ 𝐴 ) ) = ( 𝑦 ∨ℋ ( ⊥ ‘ 𝐴 ) ) ) | |
| 64 | 63 | adantr | ⊢ ( ( ( 𝑦 ∈ Cℋ ∧ 𝐴 ∈ Cℋ ) ∧ 𝐵 ∈ Cℋ ) → ( ⊥ ‘ ( ( ⊥ ‘ 𝑦 ) ∩ 𝐴 ) ) = ( 𝑦 ∨ℋ ( ⊥ ‘ 𝐴 ) ) ) |
| 65 | 64 | ineq1d | ⊢ ( ( ( 𝑦 ∈ Cℋ ∧ 𝐴 ∈ Cℋ ) ∧ 𝐵 ∈ Cℋ ) → ( ( ⊥ ‘ ( ( ⊥ ‘ 𝑦 ) ∩ 𝐴 ) ) ∩ ( ⊥ ‘ 𝐵 ) ) = ( ( 𝑦 ∨ℋ ( ⊥ ‘ 𝐴 ) ) ∩ ( ⊥ ‘ 𝐵 ) ) ) |
| 66 | 62 65 | eqtrd | ⊢ ( ( ( 𝑦 ∈ Cℋ ∧ 𝐴 ∈ Cℋ ) ∧ 𝐵 ∈ Cℋ ) → ( ⊥ ‘ ( ( ( ⊥ ‘ 𝑦 ) ∩ 𝐴 ) ∨ℋ 𝐵 ) ) = ( ( 𝑦 ∨ℋ ( ⊥ ‘ 𝐴 ) ) ∩ ( ⊥ ‘ 𝐵 ) ) ) |
| 67 | 66 | anasss | ⊢ ( ( 𝑦 ∈ Cℋ ∧ ( 𝐴 ∈ Cℋ ∧ 𝐵 ∈ Cℋ ) ) → ( ⊥ ‘ ( ( ( ⊥ ‘ 𝑦 ) ∩ 𝐴 ) ∨ℋ 𝐵 ) ) = ( ( 𝑦 ∨ℋ ( ⊥ ‘ 𝐴 ) ) ∩ ( ⊥ ‘ 𝐵 ) ) ) |
| 68 | chjcl | ⊢ ( ( 𝐴 ∈ Cℋ ∧ 𝐵 ∈ Cℋ ) → ( 𝐴 ∨ℋ 𝐵 ) ∈ Cℋ ) | |
| 69 | chdmm2 | ⊢ ( ( 𝑦 ∈ Cℋ ∧ ( 𝐴 ∨ℋ 𝐵 ) ∈ Cℋ ) → ( ⊥ ‘ ( ( ⊥ ‘ 𝑦 ) ∩ ( 𝐴 ∨ℋ 𝐵 ) ) ) = ( 𝑦 ∨ℋ ( ⊥ ‘ ( 𝐴 ∨ℋ 𝐵 ) ) ) ) | |
| 70 | 68 69 | sylan2 | ⊢ ( ( 𝑦 ∈ Cℋ ∧ ( 𝐴 ∈ Cℋ ∧ 𝐵 ∈ Cℋ ) ) → ( ⊥ ‘ ( ( ⊥ ‘ 𝑦 ) ∩ ( 𝐴 ∨ℋ 𝐵 ) ) ) = ( 𝑦 ∨ℋ ( ⊥ ‘ ( 𝐴 ∨ℋ 𝐵 ) ) ) ) |
| 71 | chdmj1 | ⊢ ( ( 𝐴 ∈ Cℋ ∧ 𝐵 ∈ Cℋ ) → ( ⊥ ‘ ( 𝐴 ∨ℋ 𝐵 ) ) = ( ( ⊥ ‘ 𝐴 ) ∩ ( ⊥ ‘ 𝐵 ) ) ) | |
| 72 | 71 | adantl | ⊢ ( ( 𝑦 ∈ Cℋ ∧ ( 𝐴 ∈ Cℋ ∧ 𝐵 ∈ Cℋ ) ) → ( ⊥ ‘ ( 𝐴 ∨ℋ 𝐵 ) ) = ( ( ⊥ ‘ 𝐴 ) ∩ ( ⊥ ‘ 𝐵 ) ) ) |
| 73 | 72 | oveq2d | ⊢ ( ( 𝑦 ∈ Cℋ ∧ ( 𝐴 ∈ Cℋ ∧ 𝐵 ∈ Cℋ ) ) → ( 𝑦 ∨ℋ ( ⊥ ‘ ( 𝐴 ∨ℋ 𝐵 ) ) ) = ( 𝑦 ∨ℋ ( ( ⊥ ‘ 𝐴 ) ∩ ( ⊥ ‘ 𝐵 ) ) ) ) |
| 74 | 70 73 | eqtrd | ⊢ ( ( 𝑦 ∈ Cℋ ∧ ( 𝐴 ∈ Cℋ ∧ 𝐵 ∈ Cℋ ) ) → ( ⊥ ‘ ( ( ⊥ ‘ 𝑦 ) ∩ ( 𝐴 ∨ℋ 𝐵 ) ) ) = ( 𝑦 ∨ℋ ( ( ⊥ ‘ 𝐴 ) ∩ ( ⊥ ‘ 𝐵 ) ) ) ) |
| 75 | 67 74 | eqeq12d | ⊢ ( ( 𝑦 ∈ Cℋ ∧ ( 𝐴 ∈ Cℋ ∧ 𝐵 ∈ Cℋ ) ) → ( ( ⊥ ‘ ( ( ( ⊥ ‘ 𝑦 ) ∩ 𝐴 ) ∨ℋ 𝐵 ) ) = ( ⊥ ‘ ( ( ⊥ ‘ 𝑦 ) ∩ ( 𝐴 ∨ℋ 𝐵 ) ) ) ↔ ( ( 𝑦 ∨ℋ ( ⊥ ‘ 𝐴 ) ) ∩ ( ⊥ ‘ 𝐵 ) ) = ( 𝑦 ∨ℋ ( ( ⊥ ‘ 𝐴 ) ∩ ( ⊥ ‘ 𝐵 ) ) ) ) ) |
| 76 | 75 | ancoms | ⊢ ( ( ( 𝐴 ∈ Cℋ ∧ 𝐵 ∈ Cℋ ) ∧ 𝑦 ∈ Cℋ ) → ( ( ⊥ ‘ ( ( ( ⊥ ‘ 𝑦 ) ∩ 𝐴 ) ∨ℋ 𝐵 ) ) = ( ⊥ ‘ ( ( ⊥ ‘ 𝑦 ) ∩ ( 𝐴 ∨ℋ 𝐵 ) ) ) ↔ ( ( 𝑦 ∨ℋ ( ⊥ ‘ 𝐴 ) ) ∩ ( ⊥ ‘ 𝐵 ) ) = ( 𝑦 ∨ℋ ( ( ⊥ ‘ 𝐴 ) ∩ ( ⊥ ‘ 𝐵 ) ) ) ) ) |
| 77 | 58 76 | imbitrid | ⊢ ( ( ( 𝐴 ∈ Cℋ ∧ 𝐵 ∈ Cℋ ) ∧ 𝑦 ∈ Cℋ ) → ( ( ( ( ⊥ ‘ 𝑦 ) ∩ 𝐴 ) ∨ℋ 𝐵 ) = ( ( ⊥ ‘ 𝑦 ) ∩ ( 𝐴 ∨ℋ 𝐵 ) ) → ( ( 𝑦 ∨ℋ ( ⊥ ‘ 𝐴 ) ) ∩ ( ⊥ ‘ 𝐵 ) ) = ( 𝑦 ∨ℋ ( ( ⊥ ‘ 𝐴 ) ∩ ( ⊥ ‘ 𝐵 ) ) ) ) ) |
| 78 | 57 77 | imim12d | ⊢ ( ( ( 𝐴 ∈ Cℋ ∧ 𝐵 ∈ Cℋ ) ∧ 𝑦 ∈ Cℋ ) → ( ( 𝐵 ⊆ ( ⊥ ‘ 𝑦 ) → ( ( ( ⊥ ‘ 𝑦 ) ∩ 𝐴 ) ∨ℋ 𝐵 ) = ( ( ⊥ ‘ 𝑦 ) ∩ ( 𝐴 ∨ℋ 𝐵 ) ) ) → ( 𝑦 ⊆ ( ⊥ ‘ 𝐵 ) → ( ( 𝑦 ∨ℋ ( ⊥ ‘ 𝐴 ) ) ∩ ( ⊥ ‘ 𝐵 ) ) = ( 𝑦 ∨ℋ ( ( ⊥ ‘ 𝐴 ) ∩ ( ⊥ ‘ 𝐵 ) ) ) ) ) ) |
| 79 | 54 78 | syld | ⊢ ( ( ( 𝐴 ∈ Cℋ ∧ 𝐵 ∈ Cℋ ) ∧ 𝑦 ∈ Cℋ ) → ( ( ( ⊥ ‘ 𝑦 ) ∈ Cℋ → ( 𝐵 ⊆ ( ⊥ ‘ 𝑦 ) → ( ( ( ⊥ ‘ 𝑦 ) ∩ 𝐴 ) ∨ℋ 𝐵 ) = ( ( ⊥ ‘ 𝑦 ) ∩ ( 𝐴 ∨ℋ 𝐵 ) ) ) ) → ( 𝑦 ⊆ ( ⊥ ‘ 𝐵 ) → ( ( 𝑦 ∨ℋ ( ⊥ ‘ 𝐴 ) ) ∩ ( ⊥ ‘ 𝐵 ) ) = ( 𝑦 ∨ℋ ( ( ⊥ ‘ 𝐴 ) ∩ ( ⊥ ‘ 𝐵 ) ) ) ) ) ) |
| 80 | 79 | ex | ⊢ ( ( 𝐴 ∈ Cℋ ∧ 𝐵 ∈ Cℋ ) → ( 𝑦 ∈ Cℋ → ( ( ( ⊥ ‘ 𝑦 ) ∈ Cℋ → ( 𝐵 ⊆ ( ⊥ ‘ 𝑦 ) → ( ( ( ⊥ ‘ 𝑦 ) ∩ 𝐴 ) ∨ℋ 𝐵 ) = ( ( ⊥ ‘ 𝑦 ) ∩ ( 𝐴 ∨ℋ 𝐵 ) ) ) ) → ( 𝑦 ⊆ ( ⊥ ‘ 𝐵 ) → ( ( 𝑦 ∨ℋ ( ⊥ ‘ 𝐴 ) ) ∩ ( ⊥ ‘ 𝐵 ) ) = ( 𝑦 ∨ℋ ( ( ⊥ ‘ 𝐴 ) ∩ ( ⊥ ‘ 𝐵 ) ) ) ) ) ) ) |
| 81 | 80 | com23 | ⊢ ( ( 𝐴 ∈ Cℋ ∧ 𝐵 ∈ Cℋ ) → ( ( ( ⊥ ‘ 𝑦 ) ∈ Cℋ → ( 𝐵 ⊆ ( ⊥ ‘ 𝑦 ) → ( ( ( ⊥ ‘ 𝑦 ) ∩ 𝐴 ) ∨ℋ 𝐵 ) = ( ( ⊥ ‘ 𝑦 ) ∩ ( 𝐴 ∨ℋ 𝐵 ) ) ) ) → ( 𝑦 ∈ Cℋ → ( 𝑦 ⊆ ( ⊥ ‘ 𝐵 ) → ( ( 𝑦 ∨ℋ ( ⊥ ‘ 𝐴 ) ) ∩ ( ⊥ ‘ 𝐵 ) ) = ( 𝑦 ∨ℋ ( ( ⊥ ‘ 𝐴 ) ∩ ( ⊥ ‘ 𝐵 ) ) ) ) ) ) ) |
| 82 | 50 81 | syl5 | ⊢ ( ( 𝐴 ∈ Cℋ ∧ 𝐵 ∈ Cℋ ) → ( ∀ 𝑥 ∈ Cℋ ( 𝐵 ⊆ 𝑥 → ( ( 𝑥 ∩ 𝐴 ) ∨ℋ 𝐵 ) = ( 𝑥 ∩ ( 𝐴 ∨ℋ 𝐵 ) ) ) → ( 𝑦 ∈ Cℋ → ( 𝑦 ⊆ ( ⊥ ‘ 𝐵 ) → ( ( 𝑦 ∨ℋ ( ⊥ ‘ 𝐴 ) ) ∩ ( ⊥ ‘ 𝐵 ) ) = ( 𝑦 ∨ℋ ( ( ⊥ ‘ 𝐴 ) ∩ ( ⊥ ‘ 𝐵 ) ) ) ) ) ) ) |
| 83 | 82 | ralrimdv | ⊢ ( ( 𝐴 ∈ Cℋ ∧ 𝐵 ∈ Cℋ ) → ( ∀ 𝑥 ∈ Cℋ ( 𝐵 ⊆ 𝑥 → ( ( 𝑥 ∩ 𝐴 ) ∨ℋ 𝐵 ) = ( 𝑥 ∩ ( 𝐴 ∨ℋ 𝐵 ) ) ) → ∀ 𝑦 ∈ Cℋ ( 𝑦 ⊆ ( ⊥ ‘ 𝐵 ) → ( ( 𝑦 ∨ℋ ( ⊥ ‘ 𝐴 ) ) ∩ ( ⊥ ‘ 𝐵 ) ) = ( 𝑦 ∨ℋ ( ( ⊥ ‘ 𝐴 ) ∩ ( ⊥ ‘ 𝐵 ) ) ) ) ) ) |
| 84 | 43 83 | impbid | ⊢ ( ( 𝐴 ∈ Cℋ ∧ 𝐵 ∈ Cℋ ) → ( ∀ 𝑦 ∈ Cℋ ( 𝑦 ⊆ ( ⊥ ‘ 𝐵 ) → ( ( 𝑦 ∨ℋ ( ⊥ ‘ 𝐴 ) ) ∩ ( ⊥ ‘ 𝐵 ) ) = ( 𝑦 ∨ℋ ( ( ⊥ ‘ 𝐴 ) ∩ ( ⊥ ‘ 𝐵 ) ) ) ) ↔ ∀ 𝑥 ∈ Cℋ ( 𝐵 ⊆ 𝑥 → ( ( 𝑥 ∩ 𝐴 ) ∨ℋ 𝐵 ) = ( 𝑥 ∩ ( 𝐴 ∨ℋ 𝐵 ) ) ) ) ) |
| 85 | mdbr | ⊢ ( ( ( ⊥ ‘ 𝐴 ) ∈ Cℋ ∧ ( ⊥ ‘ 𝐵 ) ∈ Cℋ ) → ( ( ⊥ ‘ 𝐴 ) 𝑀ℋ ( ⊥ ‘ 𝐵 ) ↔ ∀ 𝑦 ∈ Cℋ ( 𝑦 ⊆ ( ⊥ ‘ 𝐵 ) → ( ( 𝑦 ∨ℋ ( ⊥ ‘ 𝐴 ) ) ∩ ( ⊥ ‘ 𝐵 ) ) = ( 𝑦 ∨ℋ ( ( ⊥ ‘ 𝐴 ) ∩ ( ⊥ ‘ 𝐵 ) ) ) ) ) ) | |
| 86 | 16 26 85 | syl2an | ⊢ ( ( 𝐴 ∈ Cℋ ∧ 𝐵 ∈ Cℋ ) → ( ( ⊥ ‘ 𝐴 ) 𝑀ℋ ( ⊥ ‘ 𝐵 ) ↔ ∀ 𝑦 ∈ Cℋ ( 𝑦 ⊆ ( ⊥ ‘ 𝐵 ) → ( ( 𝑦 ∨ℋ ( ⊥ ‘ 𝐴 ) ) ∩ ( ⊥ ‘ 𝐵 ) ) = ( 𝑦 ∨ℋ ( ( ⊥ ‘ 𝐴 ) ∩ ( ⊥ ‘ 𝐵 ) ) ) ) ) ) |
| 87 | dmdbr | ⊢ ( ( 𝐴 ∈ Cℋ ∧ 𝐵 ∈ Cℋ ) → ( 𝐴 𝑀ℋ* 𝐵 ↔ ∀ 𝑥 ∈ Cℋ ( 𝐵 ⊆ 𝑥 → ( ( 𝑥 ∩ 𝐴 ) ∨ℋ 𝐵 ) = ( 𝑥 ∩ ( 𝐴 ∨ℋ 𝐵 ) ) ) ) ) | |
| 88 | 84 86 87 | 3bitr4rd | ⊢ ( ( 𝐴 ∈ Cℋ ∧ 𝐵 ∈ Cℋ ) → ( 𝐴 𝑀ℋ* 𝐵 ↔ ( ⊥ ‘ 𝐴 ) 𝑀ℋ ( ⊥ ‘ 𝐵 ) ) ) |