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Description: Part of proof of Lemma E in Crawley p. 113, 4th paragraph, 6th line on p. 115. (Contributed by NM, 8-Dec-2012)
| Ref | Expression | ||
|---|---|---|---|
| Hypotheses | cdleme23.b | ⊢ 𝐵 = ( Base ‘ 𝐾 ) | |
| cdleme23.l | ⊢ ≤ = ( le ‘ 𝐾 ) | ||
| cdleme23.j | ⊢ ∨ = ( join ‘ 𝐾 ) | ||
| cdleme23.m | ⊢ ∧ = ( meet ‘ 𝐾 ) | ||
| cdleme23.a | ⊢ 𝐴 = ( Atoms ‘ 𝐾 ) | ||
| cdleme23.h | ⊢ 𝐻 = ( LHyp ‘ 𝐾 ) | ||
| cdleme23.v | ⊢ 𝑉 = ( ( 𝑆 ∨ 𝑇 ) ∧ ( 𝑋 ∧ 𝑊 ) ) | ||
| Assertion | cdleme23b | ⊢ ( ( ( ( 𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻 ) ∧ ( 𝑆 ∈ 𝐴 ∧ ¬ 𝑆 ≤ 𝑊 ) ∧ ( 𝑇 ∈ 𝐴 ∧ ¬ 𝑇 ≤ 𝑊 ) ) ∧ ( 𝑋 ∈ 𝐵 ∧ ¬ 𝑋 ≤ 𝑊 ) ∧ ( 𝑆 ≠ 𝑇 ∧ ( 𝑆 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ∧ ( 𝑇 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ) ) → 𝑉 ∈ 𝐴 ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | cdleme23.b | ⊢ 𝐵 = ( Base ‘ 𝐾 ) | |
| 2 | cdleme23.l | ⊢ ≤ = ( le ‘ 𝐾 ) | |
| 3 | cdleme23.j | ⊢ ∨ = ( join ‘ 𝐾 ) | |
| 4 | cdleme23.m | ⊢ ∧ = ( meet ‘ 𝐾 ) | |
| 5 | cdleme23.a | ⊢ 𝐴 = ( Atoms ‘ 𝐾 ) | |
| 6 | cdleme23.h | ⊢ 𝐻 = ( LHyp ‘ 𝐾 ) | |
| 7 | cdleme23.v | ⊢ 𝑉 = ( ( 𝑆 ∨ 𝑇 ) ∧ ( 𝑋 ∧ 𝑊 ) ) | |
| 8 | simp11l | ⊢ ( ( ( ( 𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻 ) ∧ ( 𝑆 ∈ 𝐴 ∧ ¬ 𝑆 ≤ 𝑊 ) ∧ ( 𝑇 ∈ 𝐴 ∧ ¬ 𝑇 ≤ 𝑊 ) ) ∧ ( 𝑋 ∈ 𝐵 ∧ ¬ 𝑋 ≤ 𝑊 ) ∧ ( 𝑆 ≠ 𝑇 ∧ ( 𝑆 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ∧ ( 𝑇 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ) ) → 𝐾 ∈ HL ) | |
| 9 | hlol | ⊢ ( 𝐾 ∈ HL → 𝐾 ∈ OL ) | |
| 10 | 8 9 | syl | ⊢ ( ( ( ( 𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻 ) ∧ ( 𝑆 ∈ 𝐴 ∧ ¬ 𝑆 ≤ 𝑊 ) ∧ ( 𝑇 ∈ 𝐴 ∧ ¬ 𝑇 ≤ 𝑊 ) ) ∧ ( 𝑋 ∈ 𝐵 ∧ ¬ 𝑋 ≤ 𝑊 ) ∧ ( 𝑆 ≠ 𝑇 ∧ ( 𝑆 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ∧ ( 𝑇 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ) ) → 𝐾 ∈ OL ) |
| 11 | simp12l | ⊢ ( ( ( ( 𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻 ) ∧ ( 𝑆 ∈ 𝐴 ∧ ¬ 𝑆 ≤ 𝑊 ) ∧ ( 𝑇 ∈ 𝐴 ∧ ¬ 𝑇 ≤ 𝑊 ) ) ∧ ( 𝑋 ∈ 𝐵 ∧ ¬ 𝑋 ≤ 𝑊 ) ∧ ( 𝑆 ≠ 𝑇 ∧ ( 𝑆 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ∧ ( 𝑇 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ) ) → 𝑆 ∈ 𝐴 ) | |
| 12 | simp13l | ⊢ ( ( ( ( 𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻 ) ∧ ( 𝑆 ∈ 𝐴 ∧ ¬ 𝑆 ≤ 𝑊 ) ∧ ( 𝑇 ∈ 𝐴 ∧ ¬ 𝑇 ≤ 𝑊 ) ) ∧ ( 𝑋 ∈ 𝐵 ∧ ¬ 𝑋 ≤ 𝑊 ) ∧ ( 𝑆 ≠ 𝑇 ∧ ( 𝑆 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ∧ ( 𝑇 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ) ) → 𝑇 ∈ 𝐴 ) | |
| 13 | 1 3 5 | hlatjcl | ⊢ ( ( 𝐾 ∈ HL ∧ 𝑆 ∈ 𝐴 ∧ 𝑇 ∈ 𝐴 ) → ( 𝑆 ∨ 𝑇 ) ∈ 𝐵 ) |
| 14 | 8 11 12 13 | syl3anc | ⊢ ( ( ( ( 𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻 ) ∧ ( 𝑆 ∈ 𝐴 ∧ ¬ 𝑆 ≤ 𝑊 ) ∧ ( 𝑇 ∈ 𝐴 ∧ ¬ 𝑇 ≤ 𝑊 ) ) ∧ ( 𝑋 ∈ 𝐵 ∧ ¬ 𝑋 ≤ 𝑊 ) ∧ ( 𝑆 ≠ 𝑇 ∧ ( 𝑆 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ∧ ( 𝑇 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ) ) → ( 𝑆 ∨ 𝑇 ) ∈ 𝐵 ) |
| 15 | 8 | hllatd | ⊢ ( ( ( ( 𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻 ) ∧ ( 𝑆 ∈ 𝐴 ∧ ¬ 𝑆 ≤ 𝑊 ) ∧ ( 𝑇 ∈ 𝐴 ∧ ¬ 𝑇 ≤ 𝑊 ) ) ∧ ( 𝑋 ∈ 𝐵 ∧ ¬ 𝑋 ≤ 𝑊 ) ∧ ( 𝑆 ≠ 𝑇 ∧ ( 𝑆 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ∧ ( 𝑇 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ) ) → 𝐾 ∈ Lat ) |
| 16 | simp2l | ⊢ ( ( ( ( 𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻 ) ∧ ( 𝑆 ∈ 𝐴 ∧ ¬ 𝑆 ≤ 𝑊 ) ∧ ( 𝑇 ∈ 𝐴 ∧ ¬ 𝑇 ≤ 𝑊 ) ) ∧ ( 𝑋 ∈ 𝐵 ∧ ¬ 𝑋 ≤ 𝑊 ) ∧ ( 𝑆 ≠ 𝑇 ∧ ( 𝑆 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ∧ ( 𝑇 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ) ) → 𝑋 ∈ 𝐵 ) | |
| 17 | simp11r | ⊢ ( ( ( ( 𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻 ) ∧ ( 𝑆 ∈ 𝐴 ∧ ¬ 𝑆 ≤ 𝑊 ) ∧ ( 𝑇 ∈ 𝐴 ∧ ¬ 𝑇 ≤ 𝑊 ) ) ∧ ( 𝑋 ∈ 𝐵 ∧ ¬ 𝑋 ≤ 𝑊 ) ∧ ( 𝑆 ≠ 𝑇 ∧ ( 𝑆 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ∧ ( 𝑇 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ) ) → 𝑊 ∈ 𝐻 ) | |
| 18 | 1 6 | lhpbase | ⊢ ( 𝑊 ∈ 𝐻 → 𝑊 ∈ 𝐵 ) |
| 19 | 17 18 | syl | ⊢ ( ( ( ( 𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻 ) ∧ ( 𝑆 ∈ 𝐴 ∧ ¬ 𝑆 ≤ 𝑊 ) ∧ ( 𝑇 ∈ 𝐴 ∧ ¬ 𝑇 ≤ 𝑊 ) ) ∧ ( 𝑋 ∈ 𝐵 ∧ ¬ 𝑋 ≤ 𝑊 ) ∧ ( 𝑆 ≠ 𝑇 ∧ ( 𝑆 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ∧ ( 𝑇 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ) ) → 𝑊 ∈ 𝐵 ) |
| 20 | 1 4 | latmcl | ⊢ ( ( 𝐾 ∈ Lat ∧ 𝑋 ∈ 𝐵 ∧ 𝑊 ∈ 𝐵 ) → ( 𝑋 ∧ 𝑊 ) ∈ 𝐵 ) |
| 21 | 15 16 19 20 | syl3anc | ⊢ ( ( ( ( 𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻 ) ∧ ( 𝑆 ∈ 𝐴 ∧ ¬ 𝑆 ≤ 𝑊 ) ∧ ( 𝑇 ∈ 𝐴 ∧ ¬ 𝑇 ≤ 𝑊 ) ) ∧ ( 𝑋 ∈ 𝐵 ∧ ¬ 𝑋 ≤ 𝑊 ) ∧ ( 𝑆 ≠ 𝑇 ∧ ( 𝑆 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ∧ ( 𝑇 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ) ) → ( 𝑋 ∧ 𝑊 ) ∈ 𝐵 ) |
| 22 | 1 3 | latjcl | ⊢ ( ( 𝐾 ∈ Lat ∧ ( 𝑆 ∨ 𝑇 ) ∈ 𝐵 ∧ ( 𝑋 ∧ 𝑊 ) ∈ 𝐵 ) → ( ( 𝑆 ∨ 𝑇 ) ∨ ( 𝑋 ∧ 𝑊 ) ) ∈ 𝐵 ) |
| 23 | 15 14 21 22 | syl3anc | ⊢ ( ( ( ( 𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻 ) ∧ ( 𝑆 ∈ 𝐴 ∧ ¬ 𝑆 ≤ 𝑊 ) ∧ ( 𝑇 ∈ 𝐴 ∧ ¬ 𝑇 ≤ 𝑊 ) ) ∧ ( 𝑋 ∈ 𝐵 ∧ ¬ 𝑋 ≤ 𝑊 ) ∧ ( 𝑆 ≠ 𝑇 ∧ ( 𝑆 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ∧ ( 𝑇 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ) ) → ( ( 𝑆 ∨ 𝑇 ) ∨ ( 𝑋 ∧ 𝑊 ) ) ∈ 𝐵 ) |
| 24 | 1 4 | latmassOLD | ⊢ ( ( 𝐾 ∈ OL ∧ ( ( 𝑆 ∨ 𝑇 ) ∈ 𝐵 ∧ ( ( 𝑆 ∨ 𝑇 ) ∨ ( 𝑋 ∧ 𝑊 ) ) ∈ 𝐵 ∧ 𝑊 ∈ 𝐵 ) ) → ( ( ( 𝑆 ∨ 𝑇 ) ∧ ( ( 𝑆 ∨ 𝑇 ) ∨ ( 𝑋 ∧ 𝑊 ) ) ) ∧ 𝑊 ) = ( ( 𝑆 ∨ 𝑇 ) ∧ ( ( ( 𝑆 ∨ 𝑇 ) ∨ ( 𝑋 ∧ 𝑊 ) ) ∧ 𝑊 ) ) ) |
| 25 | 10 14 23 19 24 | syl13anc | ⊢ ( ( ( ( 𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻 ) ∧ ( 𝑆 ∈ 𝐴 ∧ ¬ 𝑆 ≤ 𝑊 ) ∧ ( 𝑇 ∈ 𝐴 ∧ ¬ 𝑇 ≤ 𝑊 ) ) ∧ ( 𝑋 ∈ 𝐵 ∧ ¬ 𝑋 ≤ 𝑊 ) ∧ ( 𝑆 ≠ 𝑇 ∧ ( 𝑆 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ∧ ( 𝑇 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ) ) → ( ( ( 𝑆 ∨ 𝑇 ) ∧ ( ( 𝑆 ∨ 𝑇 ) ∨ ( 𝑋 ∧ 𝑊 ) ) ) ∧ 𝑊 ) = ( ( 𝑆 ∨ 𝑇 ) ∧ ( ( ( 𝑆 ∨ 𝑇 ) ∨ ( 𝑋 ∧ 𝑊 ) ) ∧ 𝑊 ) ) ) |
| 26 | 1 2 3 | latlej1 | ⊢ ( ( 𝐾 ∈ Lat ∧ ( 𝑆 ∨ 𝑇 ) ∈ 𝐵 ∧ ( 𝑋 ∧ 𝑊 ) ∈ 𝐵 ) → ( 𝑆 ∨ 𝑇 ) ≤ ( ( 𝑆 ∨ 𝑇 ) ∨ ( 𝑋 ∧ 𝑊 ) ) ) |
| 27 | 15 14 21 26 | syl3anc | ⊢ ( ( ( ( 𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻 ) ∧ ( 𝑆 ∈ 𝐴 ∧ ¬ 𝑆 ≤ 𝑊 ) ∧ ( 𝑇 ∈ 𝐴 ∧ ¬ 𝑇 ≤ 𝑊 ) ) ∧ ( 𝑋 ∈ 𝐵 ∧ ¬ 𝑋 ≤ 𝑊 ) ∧ ( 𝑆 ≠ 𝑇 ∧ ( 𝑆 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ∧ ( 𝑇 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ) ) → ( 𝑆 ∨ 𝑇 ) ≤ ( ( 𝑆 ∨ 𝑇 ) ∨ ( 𝑋 ∧ 𝑊 ) ) ) |
| 28 | 1 2 4 | latleeqm1 | ⊢ ( ( 𝐾 ∈ Lat ∧ ( 𝑆 ∨ 𝑇 ) ∈ 𝐵 ∧ ( ( 𝑆 ∨ 𝑇 ) ∨ ( 𝑋 ∧ 𝑊 ) ) ∈ 𝐵 ) → ( ( 𝑆 ∨ 𝑇 ) ≤ ( ( 𝑆 ∨ 𝑇 ) ∨ ( 𝑋 ∧ 𝑊 ) ) ↔ ( ( 𝑆 ∨ 𝑇 ) ∧ ( ( 𝑆 ∨ 𝑇 ) ∨ ( 𝑋 ∧ 𝑊 ) ) ) = ( 𝑆 ∨ 𝑇 ) ) ) |
| 29 | 15 14 23 28 | syl3anc | ⊢ ( ( ( ( 𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻 ) ∧ ( 𝑆 ∈ 𝐴 ∧ ¬ 𝑆 ≤ 𝑊 ) ∧ ( 𝑇 ∈ 𝐴 ∧ ¬ 𝑇 ≤ 𝑊 ) ) ∧ ( 𝑋 ∈ 𝐵 ∧ ¬ 𝑋 ≤ 𝑊 ) ∧ ( 𝑆 ≠ 𝑇 ∧ ( 𝑆 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ∧ ( 𝑇 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ) ) → ( ( 𝑆 ∨ 𝑇 ) ≤ ( ( 𝑆 ∨ 𝑇 ) ∨ ( 𝑋 ∧ 𝑊 ) ) ↔ ( ( 𝑆 ∨ 𝑇 ) ∧ ( ( 𝑆 ∨ 𝑇 ) ∨ ( 𝑋 ∧ 𝑊 ) ) ) = ( 𝑆 ∨ 𝑇 ) ) ) |
| 30 | 27 29 | mpbid | ⊢ ( ( ( ( 𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻 ) ∧ ( 𝑆 ∈ 𝐴 ∧ ¬ 𝑆 ≤ 𝑊 ) ∧ ( 𝑇 ∈ 𝐴 ∧ ¬ 𝑇 ≤ 𝑊 ) ) ∧ ( 𝑋 ∈ 𝐵 ∧ ¬ 𝑋 ≤ 𝑊 ) ∧ ( 𝑆 ≠ 𝑇 ∧ ( 𝑆 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ∧ ( 𝑇 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ) ) → ( ( 𝑆 ∨ 𝑇 ) ∧ ( ( 𝑆 ∨ 𝑇 ) ∨ ( 𝑋 ∧ 𝑊 ) ) ) = ( 𝑆 ∨ 𝑇 ) ) |
| 31 | 30 | oveq1d | ⊢ ( ( ( ( 𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻 ) ∧ ( 𝑆 ∈ 𝐴 ∧ ¬ 𝑆 ≤ 𝑊 ) ∧ ( 𝑇 ∈ 𝐴 ∧ ¬ 𝑇 ≤ 𝑊 ) ) ∧ ( 𝑋 ∈ 𝐵 ∧ ¬ 𝑋 ≤ 𝑊 ) ∧ ( 𝑆 ≠ 𝑇 ∧ ( 𝑆 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ∧ ( 𝑇 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ) ) → ( ( ( 𝑆 ∨ 𝑇 ) ∧ ( ( 𝑆 ∨ 𝑇 ) ∨ ( 𝑋 ∧ 𝑊 ) ) ) ∧ 𝑊 ) = ( ( 𝑆 ∨ 𝑇 ) ∧ 𝑊 ) ) |
| 32 | 1 5 | atbase | ⊢ ( 𝑆 ∈ 𝐴 → 𝑆 ∈ 𝐵 ) |
| 33 | 11 32 | syl | ⊢ ( ( ( ( 𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻 ) ∧ ( 𝑆 ∈ 𝐴 ∧ ¬ 𝑆 ≤ 𝑊 ) ∧ ( 𝑇 ∈ 𝐴 ∧ ¬ 𝑇 ≤ 𝑊 ) ) ∧ ( 𝑋 ∈ 𝐵 ∧ ¬ 𝑋 ≤ 𝑊 ) ∧ ( 𝑆 ≠ 𝑇 ∧ ( 𝑆 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ∧ ( 𝑇 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ) ) → 𝑆 ∈ 𝐵 ) |
| 34 | 1 5 | atbase | ⊢ ( 𝑇 ∈ 𝐴 → 𝑇 ∈ 𝐵 ) |
| 35 | 12 34 | syl | ⊢ ( ( ( ( 𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻 ) ∧ ( 𝑆 ∈ 𝐴 ∧ ¬ 𝑆 ≤ 𝑊 ) ∧ ( 𝑇 ∈ 𝐴 ∧ ¬ 𝑇 ≤ 𝑊 ) ) ∧ ( 𝑋 ∈ 𝐵 ∧ ¬ 𝑋 ≤ 𝑊 ) ∧ ( 𝑆 ≠ 𝑇 ∧ ( 𝑆 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ∧ ( 𝑇 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ) ) → 𝑇 ∈ 𝐵 ) |
| 36 | 1 3 | latjjdir | ⊢ ( ( 𝐾 ∈ Lat ∧ ( 𝑆 ∈ 𝐵 ∧ 𝑇 ∈ 𝐵 ∧ ( 𝑋 ∧ 𝑊 ) ∈ 𝐵 ) ) → ( ( 𝑆 ∨ 𝑇 ) ∨ ( 𝑋 ∧ 𝑊 ) ) = ( ( 𝑆 ∨ ( 𝑋 ∧ 𝑊 ) ) ∨ ( 𝑇 ∨ ( 𝑋 ∧ 𝑊 ) ) ) ) |
| 37 | 15 33 35 21 36 | syl13anc | ⊢ ( ( ( ( 𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻 ) ∧ ( 𝑆 ∈ 𝐴 ∧ ¬ 𝑆 ≤ 𝑊 ) ∧ ( 𝑇 ∈ 𝐴 ∧ ¬ 𝑇 ≤ 𝑊 ) ) ∧ ( 𝑋 ∈ 𝐵 ∧ ¬ 𝑋 ≤ 𝑊 ) ∧ ( 𝑆 ≠ 𝑇 ∧ ( 𝑆 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ∧ ( 𝑇 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ) ) → ( ( 𝑆 ∨ 𝑇 ) ∨ ( 𝑋 ∧ 𝑊 ) ) = ( ( 𝑆 ∨ ( 𝑋 ∧ 𝑊 ) ) ∨ ( 𝑇 ∨ ( 𝑋 ∧ 𝑊 ) ) ) ) |
| 38 | simp32 | ⊢ ( ( ( ( 𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻 ) ∧ ( 𝑆 ∈ 𝐴 ∧ ¬ 𝑆 ≤ 𝑊 ) ∧ ( 𝑇 ∈ 𝐴 ∧ ¬ 𝑇 ≤ 𝑊 ) ) ∧ ( 𝑋 ∈ 𝐵 ∧ ¬ 𝑋 ≤ 𝑊 ) ∧ ( 𝑆 ≠ 𝑇 ∧ ( 𝑆 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ∧ ( 𝑇 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ) ) → ( 𝑆 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ) | |
| 39 | simp33 | ⊢ ( ( ( ( 𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻 ) ∧ ( 𝑆 ∈ 𝐴 ∧ ¬ 𝑆 ≤ 𝑊 ) ∧ ( 𝑇 ∈ 𝐴 ∧ ¬ 𝑇 ≤ 𝑊 ) ) ∧ ( 𝑋 ∈ 𝐵 ∧ ¬ 𝑋 ≤ 𝑊 ) ∧ ( 𝑆 ≠ 𝑇 ∧ ( 𝑆 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ∧ ( 𝑇 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ) ) → ( 𝑇 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ) | |
| 40 | 38 39 | oveq12d | ⊢ ( ( ( ( 𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻 ) ∧ ( 𝑆 ∈ 𝐴 ∧ ¬ 𝑆 ≤ 𝑊 ) ∧ ( 𝑇 ∈ 𝐴 ∧ ¬ 𝑇 ≤ 𝑊 ) ) ∧ ( 𝑋 ∈ 𝐵 ∧ ¬ 𝑋 ≤ 𝑊 ) ∧ ( 𝑆 ≠ 𝑇 ∧ ( 𝑆 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ∧ ( 𝑇 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ) ) → ( ( 𝑆 ∨ ( 𝑋 ∧ 𝑊 ) ) ∨ ( 𝑇 ∨ ( 𝑋 ∧ 𝑊 ) ) ) = ( 𝑋 ∨ 𝑋 ) ) |
| 41 | 1 3 | latjidm | ⊢ ( ( 𝐾 ∈ Lat ∧ 𝑋 ∈ 𝐵 ) → ( 𝑋 ∨ 𝑋 ) = 𝑋 ) |
| 42 | 15 16 41 | syl2anc | ⊢ ( ( ( ( 𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻 ) ∧ ( 𝑆 ∈ 𝐴 ∧ ¬ 𝑆 ≤ 𝑊 ) ∧ ( 𝑇 ∈ 𝐴 ∧ ¬ 𝑇 ≤ 𝑊 ) ) ∧ ( 𝑋 ∈ 𝐵 ∧ ¬ 𝑋 ≤ 𝑊 ) ∧ ( 𝑆 ≠ 𝑇 ∧ ( 𝑆 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ∧ ( 𝑇 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ) ) → ( 𝑋 ∨ 𝑋 ) = 𝑋 ) |
| 43 | 37 40 42 | 3eqtrd | ⊢ ( ( ( ( 𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻 ) ∧ ( 𝑆 ∈ 𝐴 ∧ ¬ 𝑆 ≤ 𝑊 ) ∧ ( 𝑇 ∈ 𝐴 ∧ ¬ 𝑇 ≤ 𝑊 ) ) ∧ ( 𝑋 ∈ 𝐵 ∧ ¬ 𝑋 ≤ 𝑊 ) ∧ ( 𝑆 ≠ 𝑇 ∧ ( 𝑆 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ∧ ( 𝑇 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ) ) → ( ( 𝑆 ∨ 𝑇 ) ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ) |
| 44 | 43 | oveq1d | ⊢ ( ( ( ( 𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻 ) ∧ ( 𝑆 ∈ 𝐴 ∧ ¬ 𝑆 ≤ 𝑊 ) ∧ ( 𝑇 ∈ 𝐴 ∧ ¬ 𝑇 ≤ 𝑊 ) ) ∧ ( 𝑋 ∈ 𝐵 ∧ ¬ 𝑋 ≤ 𝑊 ) ∧ ( 𝑆 ≠ 𝑇 ∧ ( 𝑆 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ∧ ( 𝑇 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ) ) → ( ( ( 𝑆 ∨ 𝑇 ) ∨ ( 𝑋 ∧ 𝑊 ) ) ∧ 𝑊 ) = ( 𝑋 ∧ 𝑊 ) ) |
| 45 | 44 | oveq2d | ⊢ ( ( ( ( 𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻 ) ∧ ( 𝑆 ∈ 𝐴 ∧ ¬ 𝑆 ≤ 𝑊 ) ∧ ( 𝑇 ∈ 𝐴 ∧ ¬ 𝑇 ≤ 𝑊 ) ) ∧ ( 𝑋 ∈ 𝐵 ∧ ¬ 𝑋 ≤ 𝑊 ) ∧ ( 𝑆 ≠ 𝑇 ∧ ( 𝑆 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ∧ ( 𝑇 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ) ) → ( ( 𝑆 ∨ 𝑇 ) ∧ ( ( ( 𝑆 ∨ 𝑇 ) ∨ ( 𝑋 ∧ 𝑊 ) ) ∧ 𝑊 ) ) = ( ( 𝑆 ∨ 𝑇 ) ∧ ( 𝑋 ∧ 𝑊 ) ) ) |
| 46 | 25 31 45 | 3eqtr3d | ⊢ ( ( ( ( 𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻 ) ∧ ( 𝑆 ∈ 𝐴 ∧ ¬ 𝑆 ≤ 𝑊 ) ∧ ( 𝑇 ∈ 𝐴 ∧ ¬ 𝑇 ≤ 𝑊 ) ) ∧ ( 𝑋 ∈ 𝐵 ∧ ¬ 𝑋 ≤ 𝑊 ) ∧ ( 𝑆 ≠ 𝑇 ∧ ( 𝑆 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ∧ ( 𝑇 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ) ) → ( ( 𝑆 ∨ 𝑇 ) ∧ 𝑊 ) = ( ( 𝑆 ∨ 𝑇 ) ∧ ( 𝑋 ∧ 𝑊 ) ) ) |
| 47 | simp12r | ⊢ ( ( ( ( 𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻 ) ∧ ( 𝑆 ∈ 𝐴 ∧ ¬ 𝑆 ≤ 𝑊 ) ∧ ( 𝑇 ∈ 𝐴 ∧ ¬ 𝑇 ≤ 𝑊 ) ) ∧ ( 𝑋 ∈ 𝐵 ∧ ¬ 𝑋 ≤ 𝑊 ) ∧ ( 𝑆 ≠ 𝑇 ∧ ( 𝑆 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ∧ ( 𝑇 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ) ) → ¬ 𝑆 ≤ 𝑊 ) | |
| 48 | simp31 | ⊢ ( ( ( ( 𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻 ) ∧ ( 𝑆 ∈ 𝐴 ∧ ¬ 𝑆 ≤ 𝑊 ) ∧ ( 𝑇 ∈ 𝐴 ∧ ¬ 𝑇 ≤ 𝑊 ) ) ∧ ( 𝑋 ∈ 𝐵 ∧ ¬ 𝑋 ≤ 𝑊 ) ∧ ( 𝑆 ≠ 𝑇 ∧ ( 𝑆 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ∧ ( 𝑇 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ) ) → 𝑆 ≠ 𝑇 ) | |
| 49 | 2 3 4 5 6 | lhpat | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻 ) ∧ ( 𝑆 ∈ 𝐴 ∧ ¬ 𝑆 ≤ 𝑊 ) ∧ ( 𝑇 ∈ 𝐴 ∧ 𝑆 ≠ 𝑇 ) ) → ( ( 𝑆 ∨ 𝑇 ) ∧ 𝑊 ) ∈ 𝐴 ) |
| 50 | 8 17 11 47 12 48 49 | syl222anc | ⊢ ( ( ( ( 𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻 ) ∧ ( 𝑆 ∈ 𝐴 ∧ ¬ 𝑆 ≤ 𝑊 ) ∧ ( 𝑇 ∈ 𝐴 ∧ ¬ 𝑇 ≤ 𝑊 ) ) ∧ ( 𝑋 ∈ 𝐵 ∧ ¬ 𝑋 ≤ 𝑊 ) ∧ ( 𝑆 ≠ 𝑇 ∧ ( 𝑆 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ∧ ( 𝑇 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ) ) → ( ( 𝑆 ∨ 𝑇 ) ∧ 𝑊 ) ∈ 𝐴 ) |
| 51 | 46 50 | eqeltrrd | ⊢ ( ( ( ( 𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻 ) ∧ ( 𝑆 ∈ 𝐴 ∧ ¬ 𝑆 ≤ 𝑊 ) ∧ ( 𝑇 ∈ 𝐴 ∧ ¬ 𝑇 ≤ 𝑊 ) ) ∧ ( 𝑋 ∈ 𝐵 ∧ ¬ 𝑋 ≤ 𝑊 ) ∧ ( 𝑆 ≠ 𝑇 ∧ ( 𝑆 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ∧ ( 𝑇 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ) ) → ( ( 𝑆 ∨ 𝑇 ) ∧ ( 𝑋 ∧ 𝑊 ) ) ∈ 𝐴 ) |
| 52 | 7 51 | eqeltrid | ⊢ ( ( ( ( 𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻 ) ∧ ( 𝑆 ∈ 𝐴 ∧ ¬ 𝑆 ≤ 𝑊 ) ∧ ( 𝑇 ∈ 𝐴 ∧ ¬ 𝑇 ≤ 𝑊 ) ) ∧ ( 𝑋 ∈ 𝐵 ∧ ¬ 𝑋 ≤ 𝑊 ) ∧ ( 𝑆 ≠ 𝑇 ∧ ( 𝑆 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ∧ ( 𝑇 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ) ) → 𝑉 ∈ 𝐴 ) |