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Description: A way to express 4 non-colinear atoms (rotated right 3 places). (Contributed by NM, 11-Jul-2012)
| Ref | Expression | ||
|---|---|---|---|
| Hypotheses | 3noncol.l | ⊢ ≤ = ( le ‘ 𝐾 ) | |
| 3noncol.j | ⊢ ∨ = ( join ‘ 𝐾 ) | ||
| 3noncol.a | ⊢ 𝐴 = ( Atoms ‘ 𝐾 ) | ||
| Assertion | 4noncolr3 | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ) ∧ ( 𝑅 ∈ 𝐴 ∧ 𝑆 ∈ 𝐴 ) ∧ ( 𝑃 ≠ 𝑄 ∧ ¬ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ∧ ¬ 𝑆 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑅 ) ) ) → ( 𝑄 ≠ 𝑅 ∧ ¬ 𝑆 ≤ ( 𝑄 ∨ 𝑅 ) ∧ ¬ 𝑃 ≤ ( ( 𝑄 ∨ 𝑅 ) ∨ 𝑆 ) ) ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 3noncol.l | ⊢ ≤ = ( le ‘ 𝐾 ) | |
| 2 | 3noncol.j | ⊢ ∨ = ( join ‘ 𝐾 ) | |
| 3 | 3noncol.a | ⊢ 𝐴 = ( Atoms ‘ 𝐾 ) | |
| 4 | simp11 | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ) ∧ ( 𝑅 ∈ 𝐴 ∧ 𝑆 ∈ 𝐴 ) ∧ ( 𝑃 ≠ 𝑄 ∧ ¬ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ∧ ¬ 𝑆 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑅 ) ) ) → 𝐾 ∈ HL ) | |
| 5 | 4 | hllatd | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ) ∧ ( 𝑅 ∈ 𝐴 ∧ 𝑆 ∈ 𝐴 ) ∧ ( 𝑃 ≠ 𝑄 ∧ ¬ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ∧ ¬ 𝑆 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑅 ) ) ) → 𝐾 ∈ Lat ) |
| 6 | simp2l | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ) ∧ ( 𝑅 ∈ 𝐴 ∧ 𝑆 ∈ 𝐴 ) ∧ ( 𝑃 ≠ 𝑄 ∧ ¬ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ∧ ¬ 𝑆 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑅 ) ) ) → 𝑅 ∈ 𝐴 ) | |
| 7 | eqid | ⊢ ( Base ‘ 𝐾 ) = ( Base ‘ 𝐾 ) | |
| 8 | 7 3 | atbase | ⊢ ( 𝑅 ∈ 𝐴 → 𝑅 ∈ ( Base ‘ 𝐾 ) ) |
| 9 | 6 8 | syl | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ) ∧ ( 𝑅 ∈ 𝐴 ∧ 𝑆 ∈ 𝐴 ) ∧ ( 𝑃 ≠ 𝑄 ∧ ¬ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ∧ ¬ 𝑆 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑅 ) ) ) → 𝑅 ∈ ( Base ‘ 𝐾 ) ) |
| 10 | simp12 | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ) ∧ ( 𝑅 ∈ 𝐴 ∧ 𝑆 ∈ 𝐴 ) ∧ ( 𝑃 ≠ 𝑄 ∧ ¬ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ∧ ¬ 𝑆 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑅 ) ) ) → 𝑃 ∈ 𝐴 ) | |
| 11 | 7 3 | atbase | ⊢ ( 𝑃 ∈ 𝐴 → 𝑃 ∈ ( Base ‘ 𝐾 ) ) |
| 12 | 10 11 | syl | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ) ∧ ( 𝑅 ∈ 𝐴 ∧ 𝑆 ∈ 𝐴 ) ∧ ( 𝑃 ≠ 𝑄 ∧ ¬ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ∧ ¬ 𝑆 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑅 ) ) ) → 𝑃 ∈ ( Base ‘ 𝐾 ) ) |
| 13 | simp13 | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ) ∧ ( 𝑅 ∈ 𝐴 ∧ 𝑆 ∈ 𝐴 ) ∧ ( 𝑃 ≠ 𝑄 ∧ ¬ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ∧ ¬ 𝑆 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑅 ) ) ) → 𝑄 ∈ 𝐴 ) | |
| 14 | 7 3 | atbase | ⊢ ( 𝑄 ∈ 𝐴 → 𝑄 ∈ ( Base ‘ 𝐾 ) ) |
| 15 | 13 14 | syl | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ) ∧ ( 𝑅 ∈ 𝐴 ∧ 𝑆 ∈ 𝐴 ) ∧ ( 𝑃 ≠ 𝑄 ∧ ¬ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ∧ ¬ 𝑆 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑅 ) ) ) → 𝑄 ∈ ( Base ‘ 𝐾 ) ) |
| 16 | simp32 | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ) ∧ ( 𝑅 ∈ 𝐴 ∧ 𝑆 ∈ 𝐴 ) ∧ ( 𝑃 ≠ 𝑄 ∧ ¬ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ∧ ¬ 𝑆 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑅 ) ) ) → ¬ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ) | |
| 17 | 7 1 2 | latnlej1r | ⊢ ( ( 𝐾 ∈ Lat ∧ ( 𝑅 ∈ ( Base ‘ 𝐾 ) ∧ 𝑃 ∈ ( Base ‘ 𝐾 ) ∧ 𝑄 ∈ ( Base ‘ 𝐾 ) ) ∧ ¬ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ) → 𝑅 ≠ 𝑄 ) |
| 18 | 5 9 12 15 16 17 | syl131anc | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ) ∧ ( 𝑅 ∈ 𝐴 ∧ 𝑆 ∈ 𝐴 ) ∧ ( 𝑃 ≠ 𝑄 ∧ ¬ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ∧ ¬ 𝑆 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑅 ) ) ) → 𝑅 ≠ 𝑄 ) |
| 19 | 18 | necomd | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ) ∧ ( 𝑅 ∈ 𝐴 ∧ 𝑆 ∈ 𝐴 ) ∧ ( 𝑃 ≠ 𝑄 ∧ ¬ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ∧ ¬ 𝑆 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑅 ) ) ) → 𝑄 ≠ 𝑅 ) |
| 20 | simp2r | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ) ∧ ( 𝑅 ∈ 𝐴 ∧ 𝑆 ∈ 𝐴 ) ∧ ( 𝑃 ≠ 𝑄 ∧ ¬ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ∧ ¬ 𝑆 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑅 ) ) ) → 𝑆 ∈ 𝐴 ) | |
| 21 | 7 3 | atbase | ⊢ ( 𝑆 ∈ 𝐴 → 𝑆 ∈ ( Base ‘ 𝐾 ) ) |
| 22 | 20 21 | syl | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ) ∧ ( 𝑅 ∈ 𝐴 ∧ 𝑆 ∈ 𝐴 ) ∧ ( 𝑃 ≠ 𝑄 ∧ ¬ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ∧ ¬ 𝑆 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑅 ) ) ) → 𝑆 ∈ ( Base ‘ 𝐾 ) ) |
| 23 | 7 2 | latjcl | ⊢ ( ( 𝐾 ∈ Lat ∧ 𝑄 ∈ ( Base ‘ 𝐾 ) ∧ 𝑅 ∈ ( Base ‘ 𝐾 ) ) → ( 𝑄 ∨ 𝑅 ) ∈ ( Base ‘ 𝐾 ) ) |
| 24 | 5 15 9 23 | syl3anc | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ) ∧ ( 𝑅 ∈ 𝐴 ∧ 𝑆 ∈ 𝐴 ) ∧ ( 𝑃 ≠ 𝑄 ∧ ¬ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ∧ ¬ 𝑆 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑅 ) ) ) → ( 𝑄 ∨ 𝑅 ) ∈ ( Base ‘ 𝐾 ) ) |
| 25 | simp33 | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ) ∧ ( 𝑅 ∈ 𝐴 ∧ 𝑆 ∈ 𝐴 ) ∧ ( 𝑃 ≠ 𝑄 ∧ ¬ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ∧ ¬ 𝑆 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑅 ) ) ) → ¬ 𝑆 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑅 ) ) | |
| 26 | 2 3 | hlatjass | ⊢ ( ( 𝐾 ∈ HL ∧ ( 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑅 ∈ 𝐴 ) ) → ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑅 ) = ( 𝑃 ∨ ( 𝑄 ∨ 𝑅 ) ) ) |
| 27 | 4 10 13 6 26 | syl13anc | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ) ∧ ( 𝑅 ∈ 𝐴 ∧ 𝑆 ∈ 𝐴 ) ∧ ( 𝑃 ≠ 𝑄 ∧ ¬ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ∧ ¬ 𝑆 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑅 ) ) ) → ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑅 ) = ( 𝑃 ∨ ( 𝑄 ∨ 𝑅 ) ) ) |
| 28 | 27 | breq2d | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ) ∧ ( 𝑅 ∈ 𝐴 ∧ 𝑆 ∈ 𝐴 ) ∧ ( 𝑃 ≠ 𝑄 ∧ ¬ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ∧ ¬ 𝑆 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑅 ) ) ) → ( 𝑆 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑅 ) ↔ 𝑆 ≤ ( 𝑃 ∨ ( 𝑄 ∨ 𝑅 ) ) ) ) |
| 29 | 25 28 | mtbid | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ) ∧ ( 𝑅 ∈ 𝐴 ∧ 𝑆 ∈ 𝐴 ) ∧ ( 𝑃 ≠ 𝑄 ∧ ¬ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ∧ ¬ 𝑆 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑅 ) ) ) → ¬ 𝑆 ≤ ( 𝑃 ∨ ( 𝑄 ∨ 𝑅 ) ) ) |
| 30 | 7 1 2 | latnlej2r | ⊢ ( ( 𝐾 ∈ Lat ∧ ( 𝑆 ∈ ( Base ‘ 𝐾 ) ∧ 𝑃 ∈ ( Base ‘ 𝐾 ) ∧ ( 𝑄 ∨ 𝑅 ) ∈ ( Base ‘ 𝐾 ) ) ∧ ¬ 𝑆 ≤ ( 𝑃 ∨ ( 𝑄 ∨ 𝑅 ) ) ) → ¬ 𝑆 ≤ ( 𝑄 ∨ 𝑅 ) ) |
| 31 | 5 22 12 24 29 30 | syl131anc | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ) ∧ ( 𝑅 ∈ 𝐴 ∧ 𝑆 ∈ 𝐴 ) ∧ ( 𝑃 ≠ 𝑄 ∧ ¬ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ∧ ¬ 𝑆 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑅 ) ) ) → ¬ 𝑆 ≤ ( 𝑄 ∨ 𝑅 ) ) |
| 32 | simp31 | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ) ∧ ( 𝑅 ∈ 𝐴 ∧ 𝑆 ∈ 𝐴 ) ∧ ( 𝑃 ≠ 𝑄 ∧ ¬ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ∧ ¬ 𝑆 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑅 ) ) ) → 𝑃 ≠ 𝑄 ) | |
| 33 | 1 2 3 | hlatexch1 | ⊢ ( ( 𝐾 ∈ HL ∧ ( 𝑃 ∈ 𝐴 ∧ 𝑅 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ) ∧ 𝑃 ≠ 𝑄 ) → ( 𝑃 ≤ ( 𝑄 ∨ 𝑅 ) → 𝑅 ≤ ( 𝑄 ∨ 𝑃 ) ) ) |
| 34 | 4 10 6 13 32 33 | syl131anc | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ) ∧ ( 𝑅 ∈ 𝐴 ∧ 𝑆 ∈ 𝐴 ) ∧ ( 𝑃 ≠ 𝑄 ∧ ¬ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ∧ ¬ 𝑆 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑅 ) ) ) → ( 𝑃 ≤ ( 𝑄 ∨ 𝑅 ) → 𝑅 ≤ ( 𝑄 ∨ 𝑃 ) ) ) |
| 35 | 7 2 | latjcom | ⊢ ( ( 𝐾 ∈ Lat ∧ 𝑃 ∈ ( Base ‘ 𝐾 ) ∧ 𝑄 ∈ ( Base ‘ 𝐾 ) ) → ( 𝑃 ∨ 𝑄 ) = ( 𝑄 ∨ 𝑃 ) ) |
| 36 | 5 12 15 35 | syl3anc | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ) ∧ ( 𝑅 ∈ 𝐴 ∧ 𝑆 ∈ 𝐴 ) ∧ ( 𝑃 ≠ 𝑄 ∧ ¬ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ∧ ¬ 𝑆 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑅 ) ) ) → ( 𝑃 ∨ 𝑄 ) = ( 𝑄 ∨ 𝑃 ) ) |
| 37 | 36 | breq2d | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ) ∧ ( 𝑅 ∈ 𝐴 ∧ 𝑆 ∈ 𝐴 ) ∧ ( 𝑃 ≠ 𝑄 ∧ ¬ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ∧ ¬ 𝑆 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑅 ) ) ) → ( 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ↔ 𝑅 ≤ ( 𝑄 ∨ 𝑃 ) ) ) |
| 38 | 34 37 | sylibrd | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ) ∧ ( 𝑅 ∈ 𝐴 ∧ 𝑆 ∈ 𝐴 ) ∧ ( 𝑃 ≠ 𝑄 ∧ ¬ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ∧ ¬ 𝑆 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑅 ) ) ) → ( 𝑃 ≤ ( 𝑄 ∨ 𝑅 ) → 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ) ) |
| 39 | 16 38 | mtod | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ) ∧ ( 𝑅 ∈ 𝐴 ∧ 𝑆 ∈ 𝐴 ) ∧ ( 𝑃 ≠ 𝑄 ∧ ¬ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ∧ ¬ 𝑆 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑅 ) ) ) → ¬ 𝑃 ≤ ( 𝑄 ∨ 𝑅 ) ) |
| 40 | 7 1 2 3 | hlexch1 | ⊢ ( ( 𝐾 ∈ HL ∧ ( 𝑃 ∈ 𝐴 ∧ 𝑆 ∈ 𝐴 ∧ ( 𝑄 ∨ 𝑅 ) ∈ ( Base ‘ 𝐾 ) ) ∧ ¬ 𝑃 ≤ ( 𝑄 ∨ 𝑅 ) ) → ( 𝑃 ≤ ( ( 𝑄 ∨ 𝑅 ) ∨ 𝑆 ) → 𝑆 ≤ ( ( 𝑄 ∨ 𝑅 ) ∨ 𝑃 ) ) ) |
| 41 | 4 10 20 24 39 40 | syl131anc | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ) ∧ ( 𝑅 ∈ 𝐴 ∧ 𝑆 ∈ 𝐴 ) ∧ ( 𝑃 ≠ 𝑄 ∧ ¬ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ∧ ¬ 𝑆 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑅 ) ) ) → ( 𝑃 ≤ ( ( 𝑄 ∨ 𝑅 ) ∨ 𝑆 ) → 𝑆 ≤ ( ( 𝑄 ∨ 𝑅 ) ∨ 𝑃 ) ) ) |
| 42 | 7 2 | latjcom | ⊢ ( ( 𝐾 ∈ Lat ∧ 𝑄 ∈ ( Base ‘ 𝐾 ) ∧ 𝑅 ∈ ( Base ‘ 𝐾 ) ) → ( 𝑄 ∨ 𝑅 ) = ( 𝑅 ∨ 𝑄 ) ) |
| 43 | 5 15 9 42 | syl3anc | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ) ∧ ( 𝑅 ∈ 𝐴 ∧ 𝑆 ∈ 𝐴 ) ∧ ( 𝑃 ≠ 𝑄 ∧ ¬ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ∧ ¬ 𝑆 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑅 ) ) ) → ( 𝑄 ∨ 𝑅 ) = ( 𝑅 ∨ 𝑄 ) ) |
| 44 | 43 | oveq1d | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ) ∧ ( 𝑅 ∈ 𝐴 ∧ 𝑆 ∈ 𝐴 ) ∧ ( 𝑃 ≠ 𝑄 ∧ ¬ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ∧ ¬ 𝑆 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑅 ) ) ) → ( ( 𝑄 ∨ 𝑅 ) ∨ 𝑃 ) = ( ( 𝑅 ∨ 𝑄 ) ∨ 𝑃 ) ) |
| 45 | 7 2 | latj31 | ⊢ ( ( 𝐾 ∈ Lat ∧ ( 𝑅 ∈ ( Base ‘ 𝐾 ) ∧ 𝑄 ∈ ( Base ‘ 𝐾 ) ∧ 𝑃 ∈ ( Base ‘ 𝐾 ) ) ) → ( ( 𝑅 ∨ 𝑄 ) ∨ 𝑃 ) = ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑅 ) ) |
| 46 | 5 9 15 12 45 | syl13anc | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ) ∧ ( 𝑅 ∈ 𝐴 ∧ 𝑆 ∈ 𝐴 ) ∧ ( 𝑃 ≠ 𝑄 ∧ ¬ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ∧ ¬ 𝑆 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑅 ) ) ) → ( ( 𝑅 ∨ 𝑄 ) ∨ 𝑃 ) = ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑅 ) ) |
| 47 | 44 46 | eqtrd | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ) ∧ ( 𝑅 ∈ 𝐴 ∧ 𝑆 ∈ 𝐴 ) ∧ ( 𝑃 ≠ 𝑄 ∧ ¬ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ∧ ¬ 𝑆 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑅 ) ) ) → ( ( 𝑄 ∨ 𝑅 ) ∨ 𝑃 ) = ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑅 ) ) |
| 48 | 47 | breq2d | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ) ∧ ( 𝑅 ∈ 𝐴 ∧ 𝑆 ∈ 𝐴 ) ∧ ( 𝑃 ≠ 𝑄 ∧ ¬ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ∧ ¬ 𝑆 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑅 ) ) ) → ( 𝑆 ≤ ( ( 𝑄 ∨ 𝑅 ) ∨ 𝑃 ) ↔ 𝑆 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑅 ) ) ) |
| 49 | 41 48 | sylibd | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ) ∧ ( 𝑅 ∈ 𝐴 ∧ 𝑆 ∈ 𝐴 ) ∧ ( 𝑃 ≠ 𝑄 ∧ ¬ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ∧ ¬ 𝑆 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑅 ) ) ) → ( 𝑃 ≤ ( ( 𝑄 ∨ 𝑅 ) ∨ 𝑆 ) → 𝑆 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑅 ) ) ) |
| 50 | 25 49 | mtod | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ) ∧ ( 𝑅 ∈ 𝐴 ∧ 𝑆 ∈ 𝐴 ) ∧ ( 𝑃 ≠ 𝑄 ∧ ¬ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ∧ ¬ 𝑆 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑅 ) ) ) → ¬ 𝑃 ≤ ( ( 𝑄 ∨ 𝑅 ) ∨ 𝑆 ) ) |
| 51 | 19 31 50 | 3jca | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ) ∧ ( 𝑅 ∈ 𝐴 ∧ 𝑆 ∈ 𝐴 ) ∧ ( 𝑃 ≠ 𝑄 ∧ ¬ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ∧ ¬ 𝑆 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑅 ) ) ) → ( 𝑄 ≠ 𝑅 ∧ ¬ 𝑆 ≤ ( 𝑄 ∨ 𝑅 ) ∧ ¬ 𝑃 ≤ ( ( 𝑄 ∨ 𝑅 ) ∨ 𝑆 ) ) ) |