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Description: Lemma for 4at . Break inequality into 2 cases. (Contributed by NM, 9-Jul-2012)
| Ref | Expression | ||
|---|---|---|---|
| Hypotheses | 4at.l | ⊢ ≤ = ( le ‘ 𝐾 ) | |
| 4at.j | ⊢ ∨ = ( join ‘ 𝐾 ) | ||
| 4at.a | ⊢ 𝐴 = ( Atoms ‘ 𝐾 ) | ||
| Assertion | 4atlem3b | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ) ∧ ( 𝑅 ∈ 𝐴 ∧ 𝑆 ∈ 𝐴 ∧ 𝑉 ∈ 𝐴 ) ∧ ( 𝑃 ≠ 𝑄 ∧ ¬ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ∧ ¬ 𝑆 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑅 ) ) ) → ( ¬ 𝑅 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑉 ) ∨ ¬ 𝑆 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑉 ) ) ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 4at.l | ⊢ ≤ = ( le ‘ 𝐾 ) | |
| 2 | 4at.j | ⊢ ∨ = ( join ‘ 𝐾 ) | |
| 3 | 4at.a | ⊢ 𝐴 = ( Atoms ‘ 𝐾 ) | |
| 4 | simp1 | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ) ∧ ( 𝑅 ∈ 𝐴 ∧ 𝑆 ∈ 𝐴 ∧ 𝑉 ∈ 𝐴 ) ∧ ( 𝑃 ≠ 𝑄 ∧ ¬ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ∧ ¬ 𝑆 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑅 ) ) ) → ( 𝐾 ∈ HL ∧ 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ) ) | |
| 5 | simp21 | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ) ∧ ( 𝑅 ∈ 𝐴 ∧ 𝑆 ∈ 𝐴 ∧ 𝑉 ∈ 𝐴 ) ∧ ( 𝑃 ≠ 𝑄 ∧ ¬ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ∧ ¬ 𝑆 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑅 ) ) ) → 𝑅 ∈ 𝐴 ) | |
| 6 | simp22 | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ) ∧ ( 𝑅 ∈ 𝐴 ∧ 𝑆 ∈ 𝐴 ∧ 𝑉 ∈ 𝐴 ) ∧ ( 𝑃 ≠ 𝑄 ∧ ¬ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ∧ ¬ 𝑆 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑅 ) ) ) → 𝑆 ∈ 𝐴 ) | |
| 7 | 5 6 | jca | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ) ∧ ( 𝑅 ∈ 𝐴 ∧ 𝑆 ∈ 𝐴 ∧ 𝑉 ∈ 𝐴 ) ∧ ( 𝑃 ≠ 𝑄 ∧ ¬ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ∧ ¬ 𝑆 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑅 ) ) ) → ( 𝑅 ∈ 𝐴 ∧ 𝑆 ∈ 𝐴 ) ) |
| 8 | simp13 | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ) ∧ ( 𝑅 ∈ 𝐴 ∧ 𝑆 ∈ 𝐴 ∧ 𝑉 ∈ 𝐴 ) ∧ ( 𝑃 ≠ 𝑄 ∧ ¬ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ∧ ¬ 𝑆 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑅 ) ) ) → 𝑄 ∈ 𝐴 ) | |
| 9 | simp23 | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ) ∧ ( 𝑅 ∈ 𝐴 ∧ 𝑆 ∈ 𝐴 ∧ 𝑉 ∈ 𝐴 ) ∧ ( 𝑃 ≠ 𝑄 ∧ ¬ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ∧ ¬ 𝑆 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑅 ) ) ) → 𝑉 ∈ 𝐴 ) | |
| 10 | 8 9 | jca | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ) ∧ ( 𝑅 ∈ 𝐴 ∧ 𝑆 ∈ 𝐴 ∧ 𝑉 ∈ 𝐴 ) ∧ ( 𝑃 ≠ 𝑄 ∧ ¬ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ∧ ¬ 𝑆 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑅 ) ) ) → ( 𝑄 ∈ 𝐴 ∧ 𝑉 ∈ 𝐴 ) ) |
| 11 | simp3 | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ) ∧ ( 𝑅 ∈ 𝐴 ∧ 𝑆 ∈ 𝐴 ∧ 𝑉 ∈ 𝐴 ) ∧ ( 𝑃 ≠ 𝑄 ∧ ¬ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ∧ ¬ 𝑆 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑅 ) ) ) → ( 𝑃 ≠ 𝑄 ∧ ¬ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ∧ ¬ 𝑆 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑅 ) ) ) | |
| 12 | 1 2 3 | 4atlem3a | ⊢ ( ( ( ( 𝐾 ∈ HL ∧ 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ) ∧ ( 𝑅 ∈ 𝐴 ∧ 𝑆 ∈ 𝐴 ) ∧ ( 𝑄 ∈ 𝐴 ∧ 𝑉 ∈ 𝐴 ) ) ∧ ( 𝑃 ≠ 𝑄 ∧ ¬ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ∧ ¬ 𝑆 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑅 ) ) ) → ( ¬ 𝑄 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑉 ) ∨ ¬ 𝑅 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑉 ) ∨ ¬ 𝑆 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑉 ) ) ) |
| 13 | 4 7 10 11 12 | syl31anc | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ) ∧ ( 𝑅 ∈ 𝐴 ∧ 𝑆 ∈ 𝐴 ∧ 𝑉 ∈ 𝐴 ) ∧ ( 𝑃 ≠ 𝑄 ∧ ¬ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ∧ ¬ 𝑆 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑅 ) ) ) → ( ¬ 𝑄 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑉 ) ∨ ¬ 𝑅 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑉 ) ∨ ¬ 𝑆 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑉 ) ) ) |
| 14 | 3orass | ⊢ ( ( ¬ 𝑄 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑉 ) ∨ ¬ 𝑅 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑉 ) ∨ ¬ 𝑆 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑉 ) ) ↔ ( ¬ 𝑄 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑉 ) ∨ ( ¬ 𝑅 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑉 ) ∨ ¬ 𝑆 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑉 ) ) ) ) | |
| 15 | 13 14 | sylib | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ) ∧ ( 𝑅 ∈ 𝐴 ∧ 𝑆 ∈ 𝐴 ∧ 𝑉 ∈ 𝐴 ) ∧ ( 𝑃 ≠ 𝑄 ∧ ¬ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ∧ ¬ 𝑆 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑅 ) ) ) → ( ¬ 𝑄 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑉 ) ∨ ( ¬ 𝑅 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑉 ) ∨ ¬ 𝑆 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑉 ) ) ) ) |
| 16 | simp11 | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ) ∧ ( 𝑅 ∈ 𝐴 ∧ 𝑆 ∈ 𝐴 ∧ 𝑉 ∈ 𝐴 ) ∧ ( 𝑃 ≠ 𝑄 ∧ ¬ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ∧ ¬ 𝑆 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑅 ) ) ) → 𝐾 ∈ HL ) | |
| 17 | 16 | hllatd | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ) ∧ ( 𝑅 ∈ 𝐴 ∧ 𝑆 ∈ 𝐴 ∧ 𝑉 ∈ 𝐴 ) ∧ ( 𝑃 ≠ 𝑄 ∧ ¬ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ∧ ¬ 𝑆 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑅 ) ) ) → 𝐾 ∈ Lat ) |
| 18 | simp12 | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ) ∧ ( 𝑅 ∈ 𝐴 ∧ 𝑆 ∈ 𝐴 ∧ 𝑉 ∈ 𝐴 ) ∧ ( 𝑃 ≠ 𝑄 ∧ ¬ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ∧ ¬ 𝑆 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑅 ) ) ) → 𝑃 ∈ 𝐴 ) | |
| 19 | eqid | ⊢ ( Base ‘ 𝐾 ) = ( Base ‘ 𝐾 ) | |
| 20 | 19 2 3 | hlatjcl | ⊢ ( ( 𝐾 ∈ HL ∧ 𝑃 ∈ 𝐴 ∧ 𝑉 ∈ 𝐴 ) → ( 𝑃 ∨ 𝑉 ) ∈ ( Base ‘ 𝐾 ) ) |
| 21 | 16 18 9 20 | syl3anc | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ) ∧ ( 𝑅 ∈ 𝐴 ∧ 𝑆 ∈ 𝐴 ∧ 𝑉 ∈ 𝐴 ) ∧ ( 𝑃 ≠ 𝑄 ∧ ¬ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ∧ ¬ 𝑆 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑅 ) ) ) → ( 𝑃 ∨ 𝑉 ) ∈ ( Base ‘ 𝐾 ) ) |
| 22 | 19 3 | atbase | ⊢ ( 𝑄 ∈ 𝐴 → 𝑄 ∈ ( Base ‘ 𝐾 ) ) |
| 23 | 8 22 | syl | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ) ∧ ( 𝑅 ∈ 𝐴 ∧ 𝑆 ∈ 𝐴 ∧ 𝑉 ∈ 𝐴 ) ∧ ( 𝑃 ≠ 𝑄 ∧ ¬ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ∧ ¬ 𝑆 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑅 ) ) ) → 𝑄 ∈ ( Base ‘ 𝐾 ) ) |
| 24 | 19 1 2 | latlej2 | ⊢ ( ( 𝐾 ∈ Lat ∧ ( 𝑃 ∨ 𝑉 ) ∈ ( Base ‘ 𝐾 ) ∧ 𝑄 ∈ ( Base ‘ 𝐾 ) ) → 𝑄 ≤ ( ( 𝑃 ∨ 𝑉 ) ∨ 𝑄 ) ) |
| 25 | 17 21 23 24 | syl3anc | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ) ∧ ( 𝑅 ∈ 𝐴 ∧ 𝑆 ∈ 𝐴 ∧ 𝑉 ∈ 𝐴 ) ∧ ( 𝑃 ≠ 𝑄 ∧ ¬ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ∧ ¬ 𝑆 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑅 ) ) ) → 𝑄 ≤ ( ( 𝑃 ∨ 𝑉 ) ∨ 𝑄 ) ) |
| 26 | 2 3 | hlatj32 | ⊢ ( ( 𝐾 ∈ HL ∧ ( 𝑃 ∈ 𝐴 ∧ 𝑉 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ) ) → ( ( 𝑃 ∨ 𝑉 ) ∨ 𝑄 ) = ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑉 ) ) |
| 27 | 16 18 9 8 26 | syl13anc | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ) ∧ ( 𝑅 ∈ 𝐴 ∧ 𝑆 ∈ 𝐴 ∧ 𝑉 ∈ 𝐴 ) ∧ ( 𝑃 ≠ 𝑄 ∧ ¬ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ∧ ¬ 𝑆 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑅 ) ) ) → ( ( 𝑃 ∨ 𝑉 ) ∨ 𝑄 ) = ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑉 ) ) |
| 28 | 25 27 | breqtrd | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ) ∧ ( 𝑅 ∈ 𝐴 ∧ 𝑆 ∈ 𝐴 ∧ 𝑉 ∈ 𝐴 ) ∧ ( 𝑃 ≠ 𝑄 ∧ ¬ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ∧ ¬ 𝑆 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑅 ) ) ) → 𝑄 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑉 ) ) |
| 29 | biortn | ⊢ ( 𝑄 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑉 ) → ( ( ¬ 𝑅 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑉 ) ∨ ¬ 𝑆 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑉 ) ) ↔ ( ¬ 𝑄 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑉 ) ∨ ( ¬ 𝑅 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑉 ) ∨ ¬ 𝑆 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑉 ) ) ) ) ) | |
| 30 | 28 29 | syl | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ) ∧ ( 𝑅 ∈ 𝐴 ∧ 𝑆 ∈ 𝐴 ∧ 𝑉 ∈ 𝐴 ) ∧ ( 𝑃 ≠ 𝑄 ∧ ¬ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ∧ ¬ 𝑆 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑅 ) ) ) → ( ( ¬ 𝑅 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑉 ) ∨ ¬ 𝑆 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑉 ) ) ↔ ( ¬ 𝑄 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑉 ) ∨ ( ¬ 𝑅 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑉 ) ∨ ¬ 𝑆 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑉 ) ) ) ) ) |
| 31 | 15 30 | mpbird | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ) ∧ ( 𝑅 ∈ 𝐴 ∧ 𝑆 ∈ 𝐴 ∧ 𝑉 ∈ 𝐴 ) ∧ ( 𝑃 ≠ 𝑄 ∧ ¬ 𝑅 ≤ ( 𝑃 ∨ 𝑄 ) ∧ ¬ 𝑆 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑅 ) ) ) → ( ¬ 𝑅 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑉 ) ∨ ¬ 𝑆 ≤ ( ( 𝑃 ∨ 𝑄 ) ∨ 𝑉 ) ) ) |