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Description: Two equivalent ways of expressing that R is a superposition of P and Q . (Contributed by NM, 5-Nov-2012)
| Ref | Expression | ||
|---|---|---|---|
| Hypotheses | cvlsupr2.a | ⊢ 𝐴 = ( Atoms ‘ 𝐾 ) | |
| cvlsupr2.l | ⊢ ≤ = ( le ‘ 𝐾 ) | ||
| cvlsupr2.j | ⊢ ∨ = ( join ‘ 𝐾 ) | ||
| Assertion | cvlsupr2 | ⊢ ( ( 𝐾 ∈ CvLat ∧ ( 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑅 ∈ 𝐴 ) ∧ 𝑃 ≠ 𝑄 ) → ( ( 𝑃 ∨ 𝑅 ) = ( 𝑄 ∨ 𝑅 ) ↔ ( 𝑅 ≠ 𝑃 ∧ 𝑅 ≠ 𝑄 ∧ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ) ) ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | cvlsupr2.a | ⊢ 𝐴 = ( Atoms ‘ 𝐾 ) | |
| 2 | cvlsupr2.l | ⊢ ≤ = ( le ‘ 𝐾 ) | |
| 3 | cvlsupr2.j | ⊢ ∨ = ( join ‘ 𝐾 ) | |
| 4 | simpl3 | ⊢ ( ( ( 𝐾 ∈ CvLat ∧ ( 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑅 ∈ 𝐴 ) ∧ 𝑃 ≠ 𝑄 ) ∧ ( 𝑃 ∨ 𝑅 ) = ( 𝑄 ∨ 𝑅 ) ) → 𝑃 ≠ 𝑄 ) | |
| 5 | 4 | necomd | ⊢ ( ( ( 𝐾 ∈ CvLat ∧ ( 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑅 ∈ 𝐴 ) ∧ 𝑃 ≠ 𝑄 ) ∧ ( 𝑃 ∨ 𝑅 ) = ( 𝑄 ∨ 𝑅 ) ) → 𝑄 ≠ 𝑃 ) |
| 6 | simplr | ⊢ ( ( ( ( 𝐾 ∈ CvLat ∧ ( 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑅 ∈ 𝐴 ) ∧ 𝑃 ≠ 𝑄 ) ∧ ( 𝑃 ∨ 𝑅 ) = ( 𝑄 ∨ 𝑅 ) ) ∧ 𝑅 = 𝑃 ) → ( 𝑃 ∨ 𝑅 ) = ( 𝑄 ∨ 𝑅 ) ) | |
| 7 | oveq2 | ⊢ ( 𝑅 = 𝑃 → ( 𝑃 ∨ 𝑅 ) = ( 𝑃 ∨ 𝑃 ) ) | |
| 8 | oveq2 | ⊢ ( 𝑅 = 𝑃 → ( 𝑄 ∨ 𝑅 ) = ( 𝑄 ∨ 𝑃 ) ) | |
| 9 | 7 8 | eqeq12d | ⊢ ( 𝑅 = 𝑃 → ( ( 𝑃 ∨ 𝑅 ) = ( 𝑄 ∨ 𝑅 ) ↔ ( 𝑃 ∨ 𝑃 ) = ( 𝑄 ∨ 𝑃 ) ) ) |
| 10 | eqcom | ⊢ ( ( 𝑃 ∨ 𝑃 ) = ( 𝑄 ∨ 𝑃 ) ↔ ( 𝑄 ∨ 𝑃 ) = ( 𝑃 ∨ 𝑃 ) ) | |
| 11 | 9 10 | bitrdi | ⊢ ( 𝑅 = 𝑃 → ( ( 𝑃 ∨ 𝑅 ) = ( 𝑄 ∨ 𝑅 ) ↔ ( 𝑄 ∨ 𝑃 ) = ( 𝑃 ∨ 𝑃 ) ) ) |
| 12 | 11 | adantl | ⊢ ( ( ( ( 𝐾 ∈ CvLat ∧ ( 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑅 ∈ 𝐴 ) ∧ 𝑃 ≠ 𝑄 ) ∧ ( 𝑃 ∨ 𝑅 ) = ( 𝑄 ∨ 𝑅 ) ) ∧ 𝑅 = 𝑃 ) → ( ( 𝑃 ∨ 𝑅 ) = ( 𝑄 ∨ 𝑅 ) ↔ ( 𝑄 ∨ 𝑃 ) = ( 𝑃 ∨ 𝑃 ) ) ) |
| 13 | 6 12 | mpbid | ⊢ ( ( ( ( 𝐾 ∈ CvLat ∧ ( 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑅 ∈ 𝐴 ) ∧ 𝑃 ≠ 𝑄 ) ∧ ( 𝑃 ∨ 𝑅 ) = ( 𝑄 ∨ 𝑅 ) ) ∧ 𝑅 = 𝑃 ) → ( 𝑄 ∨ 𝑃 ) = ( 𝑃 ∨ 𝑃 ) ) |
| 14 | simpl1 | ⊢ ( ( ( 𝐾 ∈ CvLat ∧ ( 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑅 ∈ 𝐴 ) ∧ 𝑃 ≠ 𝑄 ) ∧ ( 𝑃 ∨ 𝑅 ) = ( 𝑄 ∨ 𝑅 ) ) → 𝐾 ∈ CvLat ) | |
| 15 | cvllat | ⊢ ( 𝐾 ∈ CvLat → 𝐾 ∈ Lat ) | |
| 16 | 14 15 | syl | ⊢ ( ( ( 𝐾 ∈ CvLat ∧ ( 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑅 ∈ 𝐴 ) ∧ 𝑃 ≠ 𝑄 ) ∧ ( 𝑃 ∨ 𝑅 ) = ( 𝑄 ∨ 𝑅 ) ) → 𝐾 ∈ Lat ) |
| 17 | simpl21 | ⊢ ( ( ( 𝐾 ∈ CvLat ∧ ( 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑅 ∈ 𝐴 ) ∧ 𝑃 ≠ 𝑄 ) ∧ ( 𝑃 ∨ 𝑅 ) = ( 𝑄 ∨ 𝑅 ) ) → 𝑃 ∈ 𝐴 ) | |
| 18 | eqid | ⊢ ( Base ‘ 𝐾 ) = ( Base ‘ 𝐾 ) | |
| 19 | 18 1 | atbase | ⊢ ( 𝑃 ∈ 𝐴 → 𝑃 ∈ ( Base ‘ 𝐾 ) ) |
| 20 | 17 19 | syl | ⊢ ( ( ( 𝐾 ∈ CvLat ∧ ( 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑅 ∈ 𝐴 ) ∧ 𝑃 ≠ 𝑄 ) ∧ ( 𝑃 ∨ 𝑅 ) = ( 𝑄 ∨ 𝑅 ) ) → 𝑃 ∈ ( Base ‘ 𝐾 ) ) |
| 21 | 18 3 | latjidm | ⊢ ( ( 𝐾 ∈ Lat ∧ 𝑃 ∈ ( Base ‘ 𝐾 ) ) → ( 𝑃 ∨ 𝑃 ) = 𝑃 ) |
| 22 | 16 20 21 | syl2anc | ⊢ ( ( ( 𝐾 ∈ CvLat ∧ ( 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑅 ∈ 𝐴 ) ∧ 𝑃 ≠ 𝑄 ) ∧ ( 𝑃 ∨ 𝑅 ) = ( 𝑄 ∨ 𝑅 ) ) → ( 𝑃 ∨ 𝑃 ) = 𝑃 ) |
| 23 | 22 | adantr | ⊢ ( ( ( ( 𝐾 ∈ CvLat ∧ ( 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑅 ∈ 𝐴 ) ∧ 𝑃 ≠ 𝑄 ) ∧ ( 𝑃 ∨ 𝑅 ) = ( 𝑄 ∨ 𝑅 ) ) ∧ 𝑅 = 𝑃 ) → ( 𝑃 ∨ 𝑃 ) = 𝑃 ) |
| 24 | 13 23 | eqtrd | ⊢ ( ( ( ( 𝐾 ∈ CvLat ∧ ( 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑅 ∈ 𝐴 ) ∧ 𝑃 ≠ 𝑄 ) ∧ ( 𝑃 ∨ 𝑅 ) = ( 𝑄 ∨ 𝑅 ) ) ∧ 𝑅 = 𝑃 ) → ( 𝑄 ∨ 𝑃 ) = 𝑃 ) |
| 25 | 24 | ex | ⊢ ( ( ( 𝐾 ∈ CvLat ∧ ( 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑅 ∈ 𝐴 ) ∧ 𝑃 ≠ 𝑄 ) ∧ ( 𝑃 ∨ 𝑅 ) = ( 𝑄 ∨ 𝑅 ) ) → ( 𝑅 = 𝑃 → ( 𝑄 ∨ 𝑃 ) = 𝑃 ) ) |
| 26 | simpl22 | ⊢ ( ( ( 𝐾 ∈ CvLat ∧ ( 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑅 ∈ 𝐴 ) ∧ 𝑃 ≠ 𝑄 ) ∧ ( 𝑃 ∨ 𝑅 ) = ( 𝑄 ∨ 𝑅 ) ) → 𝑄 ∈ 𝐴 ) | |
| 27 | 18 1 | atbase | ⊢ ( 𝑄 ∈ 𝐴 → 𝑄 ∈ ( Base ‘ 𝐾 ) ) |
| 28 | 26 27 | syl | ⊢ ( ( ( 𝐾 ∈ CvLat ∧ ( 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑅 ∈ 𝐴 ) ∧ 𝑃 ≠ 𝑄 ) ∧ ( 𝑃 ∨ 𝑅 ) = ( 𝑄 ∨ 𝑅 ) ) → 𝑄 ∈ ( Base ‘ 𝐾 ) ) |
| 29 | 18 2 3 | latleeqj1 | ⊢ ( ( 𝐾 ∈ Lat ∧ 𝑄 ∈ ( Base ‘ 𝐾 ) ∧ 𝑃 ∈ ( Base ‘ 𝐾 ) ) → ( 𝑄 ≤ 𝑃 ↔ ( 𝑄 ∨ 𝑃 ) = 𝑃 ) ) |
| 30 | 16 28 20 29 | syl3anc | ⊢ ( ( ( 𝐾 ∈ CvLat ∧ ( 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑅 ∈ 𝐴 ) ∧ 𝑃 ≠ 𝑄 ) ∧ ( 𝑃 ∨ 𝑅 ) = ( 𝑄 ∨ 𝑅 ) ) → ( 𝑄 ≤ 𝑃 ↔ ( 𝑄 ∨ 𝑃 ) = 𝑃 ) ) |
| 31 | cvlatl | ⊢ ( 𝐾 ∈ CvLat → 𝐾 ∈ AtLat ) | |
| 32 | 14 31 | syl | ⊢ ( ( ( 𝐾 ∈ CvLat ∧ ( 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑅 ∈ 𝐴 ) ∧ 𝑃 ≠ 𝑄 ) ∧ ( 𝑃 ∨ 𝑅 ) = ( 𝑄 ∨ 𝑅 ) ) → 𝐾 ∈ AtLat ) |
| 33 | 2 1 | atcmp | ⊢ ( ( 𝐾 ∈ AtLat ∧ 𝑄 ∈ 𝐴 ∧ 𝑃 ∈ 𝐴 ) → ( 𝑄 ≤ 𝑃 ↔ 𝑄 = 𝑃 ) ) |
| 34 | 32 26 17 33 | syl3anc | ⊢ ( ( ( 𝐾 ∈ CvLat ∧ ( 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑅 ∈ 𝐴 ) ∧ 𝑃 ≠ 𝑄 ) ∧ ( 𝑃 ∨ 𝑅 ) = ( 𝑄 ∨ 𝑅 ) ) → ( 𝑄 ≤ 𝑃 ↔ 𝑄 = 𝑃 ) ) |
| 35 | 30 34 | bitr3d | ⊢ ( ( ( 𝐾 ∈ CvLat ∧ ( 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑅 ∈ 𝐴 ) ∧ 𝑃 ≠ 𝑄 ) ∧ ( 𝑃 ∨ 𝑅 ) = ( 𝑄 ∨ 𝑅 ) ) → ( ( 𝑄 ∨ 𝑃 ) = 𝑃 ↔ 𝑄 = 𝑃 ) ) |
| 36 | 25 35 | sylibd | ⊢ ( ( ( 𝐾 ∈ CvLat ∧ ( 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑅 ∈ 𝐴 ) ∧ 𝑃 ≠ 𝑄 ) ∧ ( 𝑃 ∨ 𝑅 ) = ( 𝑄 ∨ 𝑅 ) ) → ( 𝑅 = 𝑃 → 𝑄 = 𝑃 ) ) |
| 37 | 36 | necon3d | ⊢ ( ( ( 𝐾 ∈ CvLat ∧ ( 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑅 ∈ 𝐴 ) ∧ 𝑃 ≠ 𝑄 ) ∧ ( 𝑃 ∨ 𝑅 ) = ( 𝑄 ∨ 𝑅 ) ) → ( 𝑄 ≠ 𝑃 → 𝑅 ≠ 𝑃 ) ) |
| 38 | 5 37 | mpd | ⊢ ( ( ( 𝐾 ∈ CvLat ∧ ( 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑅 ∈ 𝐴 ) ∧ 𝑃 ≠ 𝑄 ) ∧ ( 𝑃 ∨ 𝑅 ) = ( 𝑄 ∨ 𝑅 ) ) → 𝑅 ≠ 𝑃 ) |
| 39 | simplr | ⊢ ( ( ( ( 𝐾 ∈ CvLat ∧ ( 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑅 ∈ 𝐴 ) ∧ 𝑃 ≠ 𝑄 ) ∧ ( 𝑃 ∨ 𝑅 ) = ( 𝑄 ∨ 𝑅 ) ) ∧ 𝑅 = 𝑄 ) → ( 𝑃 ∨ 𝑅 ) = ( 𝑄 ∨ 𝑅 ) ) | |
| 40 | oveq2 | ⊢ ( 𝑅 = 𝑄 → ( 𝑃 ∨ 𝑅 ) = ( 𝑃 ∨ 𝑄 ) ) | |
| 41 | oveq2 | ⊢ ( 𝑅 = 𝑄 → ( 𝑄 ∨ 𝑅 ) = ( 𝑄 ∨ 𝑄 ) ) | |
| 42 | 40 41 | eqeq12d | ⊢ ( 𝑅 = 𝑄 → ( ( 𝑃 ∨ 𝑅 ) = ( 𝑄 ∨ 𝑅 ) ↔ ( 𝑃 ∨ 𝑄 ) = ( 𝑄 ∨ 𝑄 ) ) ) |
| 43 | 42 | adantl | ⊢ ( ( ( ( 𝐾 ∈ CvLat ∧ ( 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑅 ∈ 𝐴 ) ∧ 𝑃 ≠ 𝑄 ) ∧ ( 𝑃 ∨ 𝑅 ) = ( 𝑄 ∨ 𝑅 ) ) ∧ 𝑅 = 𝑄 ) → ( ( 𝑃 ∨ 𝑅 ) = ( 𝑄 ∨ 𝑅 ) ↔ ( 𝑃 ∨ 𝑄 ) = ( 𝑄 ∨ 𝑄 ) ) ) |
| 44 | 39 43 | mpbid | ⊢ ( ( ( ( 𝐾 ∈ CvLat ∧ ( 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑅 ∈ 𝐴 ) ∧ 𝑃 ≠ 𝑄 ) ∧ ( 𝑃 ∨ 𝑅 ) = ( 𝑄 ∨ 𝑅 ) ) ∧ 𝑅 = 𝑄 ) → ( 𝑃 ∨ 𝑄 ) = ( 𝑄 ∨ 𝑄 ) ) |
| 45 | 18 3 | latjidm | ⊢ ( ( 𝐾 ∈ Lat ∧ 𝑄 ∈ ( Base ‘ 𝐾 ) ) → ( 𝑄 ∨ 𝑄 ) = 𝑄 ) |
| 46 | 16 28 45 | syl2anc | ⊢ ( ( ( 𝐾 ∈ CvLat ∧ ( 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑅 ∈ 𝐴 ) ∧ 𝑃 ≠ 𝑄 ) ∧ ( 𝑃 ∨ 𝑅 ) = ( 𝑄 ∨ 𝑅 ) ) → ( 𝑄 ∨ 𝑄 ) = 𝑄 ) |
| 47 | 46 | adantr | ⊢ ( ( ( ( 𝐾 ∈ CvLat ∧ ( 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑅 ∈ 𝐴 ) ∧ 𝑃 ≠ 𝑄 ) ∧ ( 𝑃 ∨ 𝑅 ) = ( 𝑄 ∨ 𝑅 ) ) ∧ 𝑅 = 𝑄 ) → ( 𝑄 ∨ 𝑄 ) = 𝑄 ) |
| 48 | 44 47 | eqtrd | ⊢ ( ( ( ( 𝐾 ∈ CvLat ∧ ( 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑅 ∈ 𝐴 ) ∧ 𝑃 ≠ 𝑄 ) ∧ ( 𝑃 ∨ 𝑅 ) = ( 𝑄 ∨ 𝑅 ) ) ∧ 𝑅 = 𝑄 ) → ( 𝑃 ∨ 𝑄 ) = 𝑄 ) |
| 49 | 48 | ex | ⊢ ( ( ( 𝐾 ∈ CvLat ∧ ( 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑅 ∈ 𝐴 ) ∧ 𝑃 ≠ 𝑄 ) ∧ ( 𝑃 ∨ 𝑅 ) = ( 𝑄 ∨ 𝑅 ) ) → ( 𝑅 = 𝑄 → ( 𝑃 ∨ 𝑄 ) = 𝑄 ) ) |
| 50 | 18 2 3 | latleeqj1 | ⊢ ( ( 𝐾 ∈ Lat ∧ 𝑃 ∈ ( Base ‘ 𝐾 ) ∧ 𝑄 ∈ ( Base ‘ 𝐾 ) ) → ( 𝑃 ≤ 𝑄 ↔ ( 𝑃 ∨ 𝑄 ) = 𝑄 ) ) |
| 51 | 16 20 28 50 | syl3anc | ⊢ ( ( ( 𝐾 ∈ CvLat ∧ ( 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑅 ∈ 𝐴 ) ∧ 𝑃 ≠ 𝑄 ) ∧ ( 𝑃 ∨ 𝑅 ) = ( 𝑄 ∨ 𝑅 ) ) → ( 𝑃 ≤ 𝑄 ↔ ( 𝑃 ∨ 𝑄 ) = 𝑄 ) ) |
| 52 | 2 1 | atcmp | ⊢ ( ( 𝐾 ∈ AtLat ∧ 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ) → ( 𝑃 ≤ 𝑄 ↔ 𝑃 = 𝑄 ) ) |
| 53 | 32 17 26 52 | syl3anc | ⊢ ( ( ( 𝐾 ∈ CvLat ∧ ( 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑅 ∈ 𝐴 ) ∧ 𝑃 ≠ 𝑄 ) ∧ ( 𝑃 ∨ 𝑅 ) = ( 𝑄 ∨ 𝑅 ) ) → ( 𝑃 ≤ 𝑄 ↔ 𝑃 = 𝑄 ) ) |
| 54 | 51 53 | bitr3d | ⊢ ( ( ( 𝐾 ∈ CvLat ∧ ( 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑅 ∈ 𝐴 ) ∧ 𝑃 ≠ 𝑄 ) ∧ ( 𝑃 ∨ 𝑅 ) = ( 𝑄 ∨ 𝑅 ) ) → ( ( 𝑃 ∨ 𝑄 ) = 𝑄 ↔ 𝑃 = 𝑄 ) ) |
| 55 | 49 54 | sylibd | ⊢ ( ( ( 𝐾 ∈ CvLat ∧ ( 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑅 ∈ 𝐴 ) ∧ 𝑃 ≠ 𝑄 ) ∧ ( 𝑃 ∨ 𝑅 ) = ( 𝑄 ∨ 𝑅 ) ) → ( 𝑅 = 𝑄 → 𝑃 = 𝑄 ) ) |
| 56 | 55 | necon3d | ⊢ ( ( ( 𝐾 ∈ CvLat ∧ ( 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑅 ∈ 𝐴 ) ∧ 𝑃 ≠ 𝑄 ) ∧ ( 𝑃 ∨ 𝑅 ) = ( 𝑄 ∨ 𝑅 ) ) → ( 𝑃 ≠ 𝑄 → 𝑅 ≠ 𝑄 ) ) |
| 57 | 4 56 | mpd | ⊢ ( ( ( 𝐾 ∈ CvLat ∧ ( 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑅 ∈ 𝐴 ) ∧ 𝑃 ≠ 𝑄 ) ∧ ( 𝑃 ∨ 𝑅 ) = ( 𝑄 ∨ 𝑅 ) ) → 𝑅 ≠ 𝑄 ) |
| 58 | simpl23 | ⊢ ( ( ( 𝐾 ∈ CvLat ∧ ( 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑅 ∈ 𝐴 ) ∧ 𝑃 ≠ 𝑄 ) ∧ ( 𝑃 ∨ 𝑅 ) = ( 𝑄 ∨ 𝑅 ) ) → 𝑅 ∈ 𝐴 ) | |
| 59 | 18 1 | atbase | ⊢ ( 𝑅 ∈ 𝐴 → 𝑅 ∈ ( Base ‘ 𝐾 ) ) |
| 60 | 58 59 | syl | ⊢ ( ( ( 𝐾 ∈ CvLat ∧ ( 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑅 ∈ 𝐴 ) ∧ 𝑃 ≠ 𝑄 ) ∧ ( 𝑃 ∨ 𝑅 ) = ( 𝑄 ∨ 𝑅 ) ) → 𝑅 ∈ ( Base ‘ 𝐾 ) ) |
| 61 | 18 2 3 | latlej1 | ⊢ ( ( 𝐾 ∈ Lat ∧ 𝑄 ∈ ( Base ‘ 𝐾 ) ∧ 𝑅 ∈ ( Base ‘ 𝐾 ) ) → 𝑄 ≤ ( 𝑄 ∨ 𝑅 ) ) |
| 62 | 16 28 60 61 | syl3anc | ⊢ ( ( ( 𝐾 ∈ CvLat ∧ ( 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑅 ∈ 𝐴 ) ∧ 𝑃 ≠ 𝑄 ) ∧ ( 𝑃 ∨ 𝑅 ) = ( 𝑄 ∨ 𝑅 ) ) → 𝑄 ≤ ( 𝑄 ∨ 𝑅 ) ) |
| 63 | simpr | ⊢ ( ( ( 𝐾 ∈ CvLat ∧ ( 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑅 ∈ 𝐴 ) ∧ 𝑃 ≠ 𝑄 ) ∧ ( 𝑃 ∨ 𝑅 ) = ( 𝑄 ∨ 𝑅 ) ) → ( 𝑃 ∨ 𝑅 ) = ( 𝑄 ∨ 𝑅 ) ) | |
| 64 | 62 63 | breqtrrd | ⊢ ( ( ( 𝐾 ∈ CvLat ∧ ( 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑅 ∈ 𝐴 ) ∧ 𝑃 ≠ 𝑄 ) ∧ ( 𝑃 ∨ 𝑅 ) = ( 𝑄 ∨ 𝑅 ) ) → 𝑄 ≤ ( 𝑃 ∨ 𝑅 ) ) |
| 65 | 2 3 1 | cvlatexch1 | ⊢ ( ( 𝐾 ∈ CvLat ∧ ( 𝑄 ∈ 𝐴 ∧ 𝑅 ∈ 𝐴 ∧ 𝑃 ∈ 𝐴 ) ∧ 𝑄 ≠ 𝑃 ) → ( 𝑄 ≤ ( 𝑃 ∨ 𝑅 ) → 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ) ) |
| 66 | 14 26 58 17 5 65 | syl131anc | ⊢ ( ( ( 𝐾 ∈ CvLat ∧ ( 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑅 ∈ 𝐴 ) ∧ 𝑃 ≠ 𝑄 ) ∧ ( 𝑃 ∨ 𝑅 ) = ( 𝑄 ∨ 𝑅 ) ) → ( 𝑄 ≤ ( 𝑃 ∨ 𝑅 ) → 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ) ) |
| 67 | 64 66 | mpd | ⊢ ( ( ( 𝐾 ∈ CvLat ∧ ( 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑅 ∈ 𝐴 ) ∧ 𝑃 ≠ 𝑄 ) ∧ ( 𝑃 ∨ 𝑅 ) = ( 𝑄 ∨ 𝑅 ) ) → 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ) |
| 68 | 38 57 67 | 3jca | ⊢ ( ( ( 𝐾 ∈ CvLat ∧ ( 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑅 ∈ 𝐴 ) ∧ 𝑃 ≠ 𝑄 ) ∧ ( 𝑃 ∨ 𝑅 ) = ( 𝑄 ∨ 𝑅 ) ) → ( 𝑅 ≠ 𝑃 ∧ 𝑅 ≠ 𝑄 ∧ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ) ) |
| 69 | simpr3 | ⊢ ( ( ( 𝐾 ∈ CvLat ∧ ( 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑅 ∈ 𝐴 ) ∧ 𝑃 ≠ 𝑄 ) ∧ ( 𝑅 ≠ 𝑃 ∧ 𝑅 ≠ 𝑄 ∧ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ) ) → 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ) | |
| 70 | simpl1 | ⊢ ( ( ( 𝐾 ∈ CvLat ∧ ( 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑅 ∈ 𝐴 ) ∧ 𝑃 ≠ 𝑄 ) ∧ ( 𝑅 ≠ 𝑃 ∧ 𝑅 ≠ 𝑄 ∧ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ) ) → 𝐾 ∈ CvLat ) | |
| 71 | 70 15 | syl | ⊢ ( ( ( 𝐾 ∈ CvLat ∧ ( 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑅 ∈ 𝐴 ) ∧ 𝑃 ≠ 𝑄 ) ∧ ( 𝑅 ≠ 𝑃 ∧ 𝑅 ≠ 𝑄 ∧ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ) ) → 𝐾 ∈ Lat ) |
| 72 | simpl21 | ⊢ ( ( ( 𝐾 ∈ CvLat ∧ ( 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑅 ∈ 𝐴 ) ∧ 𝑃 ≠ 𝑄 ) ∧ ( 𝑅 ≠ 𝑃 ∧ 𝑅 ≠ 𝑄 ∧ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ) ) → 𝑃 ∈ 𝐴 ) | |
| 73 | 72 19 | syl | ⊢ ( ( ( 𝐾 ∈ CvLat ∧ ( 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑅 ∈ 𝐴 ) ∧ 𝑃 ≠ 𝑄 ) ∧ ( 𝑅 ≠ 𝑃 ∧ 𝑅 ≠ 𝑄 ∧ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ) ) → 𝑃 ∈ ( Base ‘ 𝐾 ) ) |
| 74 | simpl22 | ⊢ ( ( ( 𝐾 ∈ CvLat ∧ ( 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑅 ∈ 𝐴 ) ∧ 𝑃 ≠ 𝑄 ) ∧ ( 𝑅 ≠ 𝑃 ∧ 𝑅 ≠ 𝑄 ∧ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ) ) → 𝑄 ∈ 𝐴 ) | |
| 75 | 74 27 | syl | ⊢ ( ( ( 𝐾 ∈ CvLat ∧ ( 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑅 ∈ 𝐴 ) ∧ 𝑃 ≠ 𝑄 ) ∧ ( 𝑅 ≠ 𝑃 ∧ 𝑅 ≠ 𝑄 ∧ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ) ) → 𝑄 ∈ ( Base ‘ 𝐾 ) ) |
| 76 | 18 3 | latjcom | ⊢ ( ( 𝐾 ∈ Lat ∧ 𝑃 ∈ ( Base ‘ 𝐾 ) ∧ 𝑄 ∈ ( Base ‘ 𝐾 ) ) → ( 𝑃 ∨ 𝑄 ) = ( 𝑄 ∨ 𝑃 ) ) |
| 77 | 71 73 75 76 | syl3anc | ⊢ ( ( ( 𝐾 ∈ CvLat ∧ ( 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑅 ∈ 𝐴 ) ∧ 𝑃 ≠ 𝑄 ) ∧ ( 𝑅 ≠ 𝑃 ∧ 𝑅 ≠ 𝑄 ∧ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ) ) → ( 𝑃 ∨ 𝑄 ) = ( 𝑄 ∨ 𝑃 ) ) |
| 78 | 77 | breq2d | ⊢ ( ( ( 𝐾 ∈ CvLat ∧ ( 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑅 ∈ 𝐴 ) ∧ 𝑃 ≠ 𝑄 ) ∧ ( 𝑅 ≠ 𝑃 ∧ 𝑅 ≠ 𝑄 ∧ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ) ) → ( 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ↔ 𝑅 ≤ ( 𝑄 ∨ 𝑃 ) ) ) |
| 79 | simpl23 | ⊢ ( ( ( 𝐾 ∈ CvLat ∧ ( 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑅 ∈ 𝐴 ) ∧ 𝑃 ≠ 𝑄 ) ∧ ( 𝑅 ≠ 𝑃 ∧ 𝑅 ≠ 𝑄 ∧ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ) ) → 𝑅 ∈ 𝐴 ) | |
| 80 | simpr2 | ⊢ ( ( ( 𝐾 ∈ CvLat ∧ ( 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑅 ∈ 𝐴 ) ∧ 𝑃 ≠ 𝑄 ) ∧ ( 𝑅 ≠ 𝑃 ∧ 𝑅 ≠ 𝑄 ∧ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ) ) → 𝑅 ≠ 𝑄 ) | |
| 81 | 2 3 1 | cvlatexch1 | ⊢ ( ( 𝐾 ∈ CvLat ∧ ( 𝑅 ∈ 𝐴 ∧ 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ) ∧ 𝑅 ≠ 𝑄 ) → ( 𝑅 ≤ ( 𝑄 ∨ 𝑃 ) → 𝑃 ≤ ( 𝑄 ∨ 𝑅 ) ) ) |
| 82 | 70 79 72 74 80 81 | syl131anc | ⊢ ( ( ( 𝐾 ∈ CvLat ∧ ( 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑅 ∈ 𝐴 ) ∧ 𝑃 ≠ 𝑄 ) ∧ ( 𝑅 ≠ 𝑃 ∧ 𝑅 ≠ 𝑄 ∧ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ) ) → ( 𝑅 ≤ ( 𝑄 ∨ 𝑃 ) → 𝑃 ≤ ( 𝑄 ∨ 𝑅 ) ) ) |
| 83 | simpr1 | ⊢ ( ( ( 𝐾 ∈ CvLat ∧ ( 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑅 ∈ 𝐴 ) ∧ 𝑃 ≠ 𝑄 ) ∧ ( 𝑅 ≠ 𝑃 ∧ 𝑅 ≠ 𝑄 ∧ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ) ) → 𝑅 ≠ 𝑃 ) | |
| 84 | 83 | necomd | ⊢ ( ( ( 𝐾 ∈ CvLat ∧ ( 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑅 ∈ 𝐴 ) ∧ 𝑃 ≠ 𝑄 ) ∧ ( 𝑅 ≠ 𝑃 ∧ 𝑅 ≠ 𝑄 ∧ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ) ) → 𝑃 ≠ 𝑅 ) |
| 85 | 2 3 1 | cvlatexchb2 | ⊢ ( ( 𝐾 ∈ CvLat ∧ ( 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑅 ∈ 𝐴 ) ∧ 𝑃 ≠ 𝑅 ) → ( 𝑃 ≤ ( 𝑄 ∨ 𝑅 ) ↔ ( 𝑃 ∨ 𝑅 ) = ( 𝑄 ∨ 𝑅 ) ) ) |
| 86 | 70 72 74 79 84 85 | syl131anc | ⊢ ( ( ( 𝐾 ∈ CvLat ∧ ( 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑅 ∈ 𝐴 ) ∧ 𝑃 ≠ 𝑄 ) ∧ ( 𝑅 ≠ 𝑃 ∧ 𝑅 ≠ 𝑄 ∧ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ) ) → ( 𝑃 ≤ ( 𝑄 ∨ 𝑅 ) ↔ ( 𝑃 ∨ 𝑅 ) = ( 𝑄 ∨ 𝑅 ) ) ) |
| 87 | 82 86 | sylibd | ⊢ ( ( ( 𝐾 ∈ CvLat ∧ ( 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑅 ∈ 𝐴 ) ∧ 𝑃 ≠ 𝑄 ) ∧ ( 𝑅 ≠ 𝑃 ∧ 𝑅 ≠ 𝑄 ∧ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ) ) → ( 𝑅 ≤ ( 𝑄 ∨ 𝑃 ) → ( 𝑃 ∨ 𝑅 ) = ( 𝑄 ∨ 𝑅 ) ) ) |
| 88 | 78 87 | sylbid | ⊢ ( ( ( 𝐾 ∈ CvLat ∧ ( 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑅 ∈ 𝐴 ) ∧ 𝑃 ≠ 𝑄 ) ∧ ( 𝑅 ≠ 𝑃 ∧ 𝑅 ≠ 𝑄 ∧ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ) ) → ( 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) → ( 𝑃 ∨ 𝑅 ) = ( 𝑄 ∨ 𝑅 ) ) ) |
| 89 | 69 88 | mpd | ⊢ ( ( ( 𝐾 ∈ CvLat ∧ ( 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑅 ∈ 𝐴 ) ∧ 𝑃 ≠ 𝑄 ) ∧ ( 𝑅 ≠ 𝑃 ∧ 𝑅 ≠ 𝑄 ∧ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ) ) → ( 𝑃 ∨ 𝑅 ) = ( 𝑄 ∨ 𝑅 ) ) |
| 90 | 68 89 | impbida | ⊢ ( ( 𝐾 ∈ CvLat ∧ ( 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑅 ∈ 𝐴 ) ∧ 𝑃 ≠ 𝑄 ) → ( ( 𝑃 ∨ 𝑅 ) = ( 𝑄 ∨ 𝑅 ) ↔ ( 𝑅 ≠ 𝑃 ∧ 𝑅 ≠ 𝑄 ∧ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ) ) ) |