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Description: Part of proof of Lemma E in Crawley p. 113. (Contributed by NM, 9-Feb-2013)
| Ref | Expression | ||
|---|---|---|---|
| Hypotheses | cdleme30.b | ⊢ 𝐵 = ( Base ‘ 𝐾 ) | |
| cdleme30.l | ⊢ ≤ = ( le ‘ 𝐾 ) | ||
| cdleme30.j | ⊢ ∨ = ( join ‘ 𝐾 ) | ||
| cdleme30.m | ⊢ ∧ = ( meet ‘ 𝐾 ) | ||
| cdleme30.a | ⊢ 𝐴 = ( Atoms ‘ 𝐾 ) | ||
| cdleme30.h | ⊢ 𝐻 = ( LHyp ‘ 𝐾 ) | ||
| Assertion | cdleme30a | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻 ) ∧ ( 𝑠 ∈ 𝐴 ∧ ( 𝑋 ∈ 𝐵 ∧ ¬ 𝑋 ≤ 𝑊 ) ∧ 𝑌 ∈ 𝐵 ) ∧ ( ( 𝑠 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ∧ 𝑋 ≤ 𝑌 ) ) → ( 𝑠 ∨ ( 𝑌 ∧ 𝑊 ) ) = 𝑌 ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | cdleme30.b | ⊢ 𝐵 = ( Base ‘ 𝐾 ) | |
| 2 | cdleme30.l | ⊢ ≤ = ( le ‘ 𝐾 ) | |
| 3 | cdleme30.j | ⊢ ∨ = ( join ‘ 𝐾 ) | |
| 4 | cdleme30.m | ⊢ ∧ = ( meet ‘ 𝐾 ) | |
| 5 | cdleme30.a | ⊢ 𝐴 = ( Atoms ‘ 𝐾 ) | |
| 6 | cdleme30.h | ⊢ 𝐻 = ( LHyp ‘ 𝐾 ) | |
| 7 | simp1l | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻 ) ∧ ( 𝑠 ∈ 𝐴 ∧ ( 𝑋 ∈ 𝐵 ∧ ¬ 𝑋 ≤ 𝑊 ) ∧ 𝑌 ∈ 𝐵 ) ∧ ( ( 𝑠 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ∧ 𝑋 ≤ 𝑌 ) ) → 𝐾 ∈ HL ) | |
| 8 | 7 | hllatd | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻 ) ∧ ( 𝑠 ∈ 𝐴 ∧ ( 𝑋 ∈ 𝐵 ∧ ¬ 𝑋 ≤ 𝑊 ) ∧ 𝑌 ∈ 𝐵 ) ∧ ( ( 𝑠 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ∧ 𝑋 ≤ 𝑌 ) ) → 𝐾 ∈ Lat ) |
| 9 | simp21 | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻 ) ∧ ( 𝑠 ∈ 𝐴 ∧ ( 𝑋 ∈ 𝐵 ∧ ¬ 𝑋 ≤ 𝑊 ) ∧ 𝑌 ∈ 𝐵 ) ∧ ( ( 𝑠 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ∧ 𝑋 ≤ 𝑌 ) ) → 𝑠 ∈ 𝐴 ) | |
| 10 | 1 5 | atbase | ⊢ ( 𝑠 ∈ 𝐴 → 𝑠 ∈ 𝐵 ) |
| 11 | 9 10 | syl | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻 ) ∧ ( 𝑠 ∈ 𝐴 ∧ ( 𝑋 ∈ 𝐵 ∧ ¬ 𝑋 ≤ 𝑊 ) ∧ 𝑌 ∈ 𝐵 ) ∧ ( ( 𝑠 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ∧ 𝑋 ≤ 𝑌 ) ) → 𝑠 ∈ 𝐵 ) |
| 12 | simp23 | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻 ) ∧ ( 𝑠 ∈ 𝐴 ∧ ( 𝑋 ∈ 𝐵 ∧ ¬ 𝑋 ≤ 𝑊 ) ∧ 𝑌 ∈ 𝐵 ) ∧ ( ( 𝑠 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ∧ 𝑋 ≤ 𝑌 ) ) → 𝑌 ∈ 𝐵 ) | |
| 13 | simp1r | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻 ) ∧ ( 𝑠 ∈ 𝐴 ∧ ( 𝑋 ∈ 𝐵 ∧ ¬ 𝑋 ≤ 𝑊 ) ∧ 𝑌 ∈ 𝐵 ) ∧ ( ( 𝑠 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ∧ 𝑋 ≤ 𝑌 ) ) → 𝑊 ∈ 𝐻 ) | |
| 14 | 1 6 | lhpbase | ⊢ ( 𝑊 ∈ 𝐻 → 𝑊 ∈ 𝐵 ) |
| 15 | 13 14 | syl | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻 ) ∧ ( 𝑠 ∈ 𝐴 ∧ ( 𝑋 ∈ 𝐵 ∧ ¬ 𝑋 ≤ 𝑊 ) ∧ 𝑌 ∈ 𝐵 ) ∧ ( ( 𝑠 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ∧ 𝑋 ≤ 𝑌 ) ) → 𝑊 ∈ 𝐵 ) |
| 16 | 1 4 | latmcl | ⊢ ( ( 𝐾 ∈ Lat ∧ 𝑌 ∈ 𝐵 ∧ 𝑊 ∈ 𝐵 ) → ( 𝑌 ∧ 𝑊 ) ∈ 𝐵 ) |
| 17 | 8 12 15 16 | syl3anc | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻 ) ∧ ( 𝑠 ∈ 𝐴 ∧ ( 𝑋 ∈ 𝐵 ∧ ¬ 𝑋 ≤ 𝑊 ) ∧ 𝑌 ∈ 𝐵 ) ∧ ( ( 𝑠 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ∧ 𝑋 ≤ 𝑌 ) ) → ( 𝑌 ∧ 𝑊 ) ∈ 𝐵 ) |
| 18 | simp22l | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻 ) ∧ ( 𝑠 ∈ 𝐴 ∧ ( 𝑋 ∈ 𝐵 ∧ ¬ 𝑋 ≤ 𝑊 ) ∧ 𝑌 ∈ 𝐵 ) ∧ ( ( 𝑠 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ∧ 𝑋 ≤ 𝑌 ) ) → 𝑋 ∈ 𝐵 ) | |
| 19 | 1 3 | latjass | ⊢ ( ( 𝐾 ∈ Lat ∧ ( 𝑠 ∈ 𝐵 ∧ ( 𝑌 ∧ 𝑊 ) ∈ 𝐵 ∧ 𝑋 ∈ 𝐵 ) ) → ( ( 𝑠 ∨ ( 𝑌 ∧ 𝑊 ) ) ∨ 𝑋 ) = ( 𝑠 ∨ ( ( 𝑌 ∧ 𝑊 ) ∨ 𝑋 ) ) ) |
| 20 | 8 11 17 18 19 | syl13anc | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻 ) ∧ ( 𝑠 ∈ 𝐴 ∧ ( 𝑋 ∈ 𝐵 ∧ ¬ 𝑋 ≤ 𝑊 ) ∧ 𝑌 ∈ 𝐵 ) ∧ ( ( 𝑠 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ∧ 𝑋 ≤ 𝑌 ) ) → ( ( 𝑠 ∨ ( 𝑌 ∧ 𝑊 ) ) ∨ 𝑋 ) = ( 𝑠 ∨ ( ( 𝑌 ∧ 𝑊 ) ∨ 𝑋 ) ) ) |
| 21 | simp3l | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻 ) ∧ ( 𝑠 ∈ 𝐴 ∧ ( 𝑋 ∈ 𝐵 ∧ ¬ 𝑋 ≤ 𝑊 ) ∧ 𝑌 ∈ 𝐵 ) ∧ ( ( 𝑠 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ∧ 𝑋 ≤ 𝑌 ) ) → ( 𝑠 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ) | |
| 22 | simp3r | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻 ) ∧ ( 𝑠 ∈ 𝐴 ∧ ( 𝑋 ∈ 𝐵 ∧ ¬ 𝑋 ≤ 𝑊 ) ∧ 𝑌 ∈ 𝐵 ) ∧ ( ( 𝑠 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ∧ 𝑋 ≤ 𝑌 ) ) → 𝑋 ≤ 𝑌 ) | |
| 23 | 1 2 4 | latmlem1 | ⊢ ( ( 𝐾 ∈ Lat ∧ ( 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵 ∧ 𝑊 ∈ 𝐵 ) ) → ( 𝑋 ≤ 𝑌 → ( 𝑋 ∧ 𝑊 ) ≤ ( 𝑌 ∧ 𝑊 ) ) ) |
| 24 | 8 18 12 15 23 | syl13anc | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻 ) ∧ ( 𝑠 ∈ 𝐴 ∧ ( 𝑋 ∈ 𝐵 ∧ ¬ 𝑋 ≤ 𝑊 ) ∧ 𝑌 ∈ 𝐵 ) ∧ ( ( 𝑠 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ∧ 𝑋 ≤ 𝑌 ) ) → ( 𝑋 ≤ 𝑌 → ( 𝑋 ∧ 𝑊 ) ≤ ( 𝑌 ∧ 𝑊 ) ) ) |
| 25 | 22 24 | mpd | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻 ) ∧ ( 𝑠 ∈ 𝐴 ∧ ( 𝑋 ∈ 𝐵 ∧ ¬ 𝑋 ≤ 𝑊 ) ∧ 𝑌 ∈ 𝐵 ) ∧ ( ( 𝑠 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ∧ 𝑋 ≤ 𝑌 ) ) → ( 𝑋 ∧ 𝑊 ) ≤ ( 𝑌 ∧ 𝑊 ) ) |
| 26 | 1 4 | latmcl | ⊢ ( ( 𝐾 ∈ Lat ∧ 𝑋 ∈ 𝐵 ∧ 𝑊 ∈ 𝐵 ) → ( 𝑋 ∧ 𝑊 ) ∈ 𝐵 ) |
| 27 | 8 18 15 26 | syl3anc | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻 ) ∧ ( 𝑠 ∈ 𝐴 ∧ ( 𝑋 ∈ 𝐵 ∧ ¬ 𝑋 ≤ 𝑊 ) ∧ 𝑌 ∈ 𝐵 ) ∧ ( ( 𝑠 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ∧ 𝑋 ≤ 𝑌 ) ) → ( 𝑋 ∧ 𝑊 ) ∈ 𝐵 ) |
| 28 | 1 2 3 | latjlej2 | ⊢ ( ( 𝐾 ∈ Lat ∧ ( ( 𝑋 ∧ 𝑊 ) ∈ 𝐵 ∧ ( 𝑌 ∧ 𝑊 ) ∈ 𝐵 ∧ 𝑠 ∈ 𝐵 ) ) → ( ( 𝑋 ∧ 𝑊 ) ≤ ( 𝑌 ∧ 𝑊 ) → ( 𝑠 ∨ ( 𝑋 ∧ 𝑊 ) ) ≤ ( 𝑠 ∨ ( 𝑌 ∧ 𝑊 ) ) ) ) |
| 29 | 8 27 17 11 28 | syl13anc | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻 ) ∧ ( 𝑠 ∈ 𝐴 ∧ ( 𝑋 ∈ 𝐵 ∧ ¬ 𝑋 ≤ 𝑊 ) ∧ 𝑌 ∈ 𝐵 ) ∧ ( ( 𝑠 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ∧ 𝑋 ≤ 𝑌 ) ) → ( ( 𝑋 ∧ 𝑊 ) ≤ ( 𝑌 ∧ 𝑊 ) → ( 𝑠 ∨ ( 𝑋 ∧ 𝑊 ) ) ≤ ( 𝑠 ∨ ( 𝑌 ∧ 𝑊 ) ) ) ) |
| 30 | 25 29 | mpd | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻 ) ∧ ( 𝑠 ∈ 𝐴 ∧ ( 𝑋 ∈ 𝐵 ∧ ¬ 𝑋 ≤ 𝑊 ) ∧ 𝑌 ∈ 𝐵 ) ∧ ( ( 𝑠 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ∧ 𝑋 ≤ 𝑌 ) ) → ( 𝑠 ∨ ( 𝑋 ∧ 𝑊 ) ) ≤ ( 𝑠 ∨ ( 𝑌 ∧ 𝑊 ) ) ) |
| 31 | 21 30 | eqbrtrrd | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻 ) ∧ ( 𝑠 ∈ 𝐴 ∧ ( 𝑋 ∈ 𝐵 ∧ ¬ 𝑋 ≤ 𝑊 ) ∧ 𝑌 ∈ 𝐵 ) ∧ ( ( 𝑠 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ∧ 𝑋 ≤ 𝑌 ) ) → 𝑋 ≤ ( 𝑠 ∨ ( 𝑌 ∧ 𝑊 ) ) ) |
| 32 | 1 3 | latjcl | ⊢ ( ( 𝐾 ∈ Lat ∧ 𝑠 ∈ 𝐵 ∧ ( 𝑌 ∧ 𝑊 ) ∈ 𝐵 ) → ( 𝑠 ∨ ( 𝑌 ∧ 𝑊 ) ) ∈ 𝐵 ) |
| 33 | 8 11 17 32 | syl3anc | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻 ) ∧ ( 𝑠 ∈ 𝐴 ∧ ( 𝑋 ∈ 𝐵 ∧ ¬ 𝑋 ≤ 𝑊 ) ∧ 𝑌 ∈ 𝐵 ) ∧ ( ( 𝑠 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ∧ 𝑋 ≤ 𝑌 ) ) → ( 𝑠 ∨ ( 𝑌 ∧ 𝑊 ) ) ∈ 𝐵 ) |
| 34 | 1 2 3 | latleeqj2 | ⊢ ( ( 𝐾 ∈ Lat ∧ 𝑋 ∈ 𝐵 ∧ ( 𝑠 ∨ ( 𝑌 ∧ 𝑊 ) ) ∈ 𝐵 ) → ( 𝑋 ≤ ( 𝑠 ∨ ( 𝑌 ∧ 𝑊 ) ) ↔ ( ( 𝑠 ∨ ( 𝑌 ∧ 𝑊 ) ) ∨ 𝑋 ) = ( 𝑠 ∨ ( 𝑌 ∧ 𝑊 ) ) ) ) |
| 35 | 8 18 33 34 | syl3anc | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻 ) ∧ ( 𝑠 ∈ 𝐴 ∧ ( 𝑋 ∈ 𝐵 ∧ ¬ 𝑋 ≤ 𝑊 ) ∧ 𝑌 ∈ 𝐵 ) ∧ ( ( 𝑠 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ∧ 𝑋 ≤ 𝑌 ) ) → ( 𝑋 ≤ ( 𝑠 ∨ ( 𝑌 ∧ 𝑊 ) ) ↔ ( ( 𝑠 ∨ ( 𝑌 ∧ 𝑊 ) ) ∨ 𝑋 ) = ( 𝑠 ∨ ( 𝑌 ∧ 𝑊 ) ) ) ) |
| 36 | 31 35 | mpbid | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻 ) ∧ ( 𝑠 ∈ 𝐴 ∧ ( 𝑋 ∈ 𝐵 ∧ ¬ 𝑋 ≤ 𝑊 ) ∧ 𝑌 ∈ 𝐵 ) ∧ ( ( 𝑠 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ∧ 𝑋 ≤ 𝑌 ) ) → ( ( 𝑠 ∨ ( 𝑌 ∧ 𝑊 ) ) ∨ 𝑋 ) = ( 𝑠 ∨ ( 𝑌 ∧ 𝑊 ) ) ) |
| 37 | simp1 | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻 ) ∧ ( 𝑠 ∈ 𝐴 ∧ ( 𝑋 ∈ 𝐵 ∧ ¬ 𝑋 ≤ 𝑊 ) ∧ 𝑌 ∈ 𝐵 ) ∧ ( ( 𝑠 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ∧ 𝑋 ≤ 𝑌 ) ) → ( 𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻 ) ) | |
| 38 | 1 2 3 4 6 | lhpmod2i2 | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻 ) ∧ ( 𝑌 ∈ 𝐵 ∧ 𝑋 ∈ 𝐵 ) ∧ 𝑋 ≤ 𝑌 ) → ( ( 𝑌 ∧ 𝑊 ) ∨ 𝑋 ) = ( 𝑌 ∧ ( 𝑊 ∨ 𝑋 ) ) ) |
| 39 | 37 12 18 22 38 | syl121anc | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻 ) ∧ ( 𝑠 ∈ 𝐴 ∧ ( 𝑋 ∈ 𝐵 ∧ ¬ 𝑋 ≤ 𝑊 ) ∧ 𝑌 ∈ 𝐵 ) ∧ ( ( 𝑠 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ∧ 𝑋 ≤ 𝑌 ) ) → ( ( 𝑌 ∧ 𝑊 ) ∨ 𝑋 ) = ( 𝑌 ∧ ( 𝑊 ∨ 𝑋 ) ) ) |
| 40 | 39 | oveq2d | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻 ) ∧ ( 𝑠 ∈ 𝐴 ∧ ( 𝑋 ∈ 𝐵 ∧ ¬ 𝑋 ≤ 𝑊 ) ∧ 𝑌 ∈ 𝐵 ) ∧ ( ( 𝑠 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ∧ 𝑋 ≤ 𝑌 ) ) → ( 𝑠 ∨ ( ( 𝑌 ∧ 𝑊 ) ∨ 𝑋 ) ) = ( 𝑠 ∨ ( 𝑌 ∧ ( 𝑊 ∨ 𝑋 ) ) ) ) |
| 41 | simp22 | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻 ) ∧ ( 𝑠 ∈ 𝐴 ∧ ( 𝑋 ∈ 𝐵 ∧ ¬ 𝑋 ≤ 𝑊 ) ∧ 𝑌 ∈ 𝐵 ) ∧ ( ( 𝑠 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ∧ 𝑋 ≤ 𝑌 ) ) → ( 𝑋 ∈ 𝐵 ∧ ¬ 𝑋 ≤ 𝑊 ) ) | |
| 42 | eqid | ⊢ ( 1. ‘ 𝐾 ) = ( 1. ‘ 𝐾 ) | |
| 43 | 1 2 3 42 6 | lhpj1 | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻 ) ∧ ( 𝑋 ∈ 𝐵 ∧ ¬ 𝑋 ≤ 𝑊 ) ) → ( 𝑊 ∨ 𝑋 ) = ( 1. ‘ 𝐾 ) ) |
| 44 | 37 41 43 | syl2anc | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻 ) ∧ ( 𝑠 ∈ 𝐴 ∧ ( 𝑋 ∈ 𝐵 ∧ ¬ 𝑋 ≤ 𝑊 ) ∧ 𝑌 ∈ 𝐵 ) ∧ ( ( 𝑠 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ∧ 𝑋 ≤ 𝑌 ) ) → ( 𝑊 ∨ 𝑋 ) = ( 1. ‘ 𝐾 ) ) |
| 45 | 44 | oveq2d | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻 ) ∧ ( 𝑠 ∈ 𝐴 ∧ ( 𝑋 ∈ 𝐵 ∧ ¬ 𝑋 ≤ 𝑊 ) ∧ 𝑌 ∈ 𝐵 ) ∧ ( ( 𝑠 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ∧ 𝑋 ≤ 𝑌 ) ) → ( 𝑌 ∧ ( 𝑊 ∨ 𝑋 ) ) = ( 𝑌 ∧ ( 1. ‘ 𝐾 ) ) ) |
| 46 | hlol | ⊢ ( 𝐾 ∈ HL → 𝐾 ∈ OL ) | |
| 47 | 7 46 | syl | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻 ) ∧ ( 𝑠 ∈ 𝐴 ∧ ( 𝑋 ∈ 𝐵 ∧ ¬ 𝑋 ≤ 𝑊 ) ∧ 𝑌 ∈ 𝐵 ) ∧ ( ( 𝑠 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ∧ 𝑋 ≤ 𝑌 ) ) → 𝐾 ∈ OL ) |
| 48 | 1 4 42 | olm11 | ⊢ ( ( 𝐾 ∈ OL ∧ 𝑌 ∈ 𝐵 ) → ( 𝑌 ∧ ( 1. ‘ 𝐾 ) ) = 𝑌 ) |
| 49 | 47 12 48 | syl2anc | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻 ) ∧ ( 𝑠 ∈ 𝐴 ∧ ( 𝑋 ∈ 𝐵 ∧ ¬ 𝑋 ≤ 𝑊 ) ∧ 𝑌 ∈ 𝐵 ) ∧ ( ( 𝑠 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ∧ 𝑋 ≤ 𝑌 ) ) → ( 𝑌 ∧ ( 1. ‘ 𝐾 ) ) = 𝑌 ) |
| 50 | 45 49 | eqtrd | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻 ) ∧ ( 𝑠 ∈ 𝐴 ∧ ( 𝑋 ∈ 𝐵 ∧ ¬ 𝑋 ≤ 𝑊 ) ∧ 𝑌 ∈ 𝐵 ) ∧ ( ( 𝑠 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ∧ 𝑋 ≤ 𝑌 ) ) → ( 𝑌 ∧ ( 𝑊 ∨ 𝑋 ) ) = 𝑌 ) |
| 51 | 50 | oveq2d | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻 ) ∧ ( 𝑠 ∈ 𝐴 ∧ ( 𝑋 ∈ 𝐵 ∧ ¬ 𝑋 ≤ 𝑊 ) ∧ 𝑌 ∈ 𝐵 ) ∧ ( ( 𝑠 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ∧ 𝑋 ≤ 𝑌 ) ) → ( 𝑠 ∨ ( 𝑌 ∧ ( 𝑊 ∨ 𝑋 ) ) ) = ( 𝑠 ∨ 𝑌 ) ) |
| 52 | 1 2 3 | latlej1 | ⊢ ( ( 𝐾 ∈ Lat ∧ 𝑠 ∈ 𝐵 ∧ ( 𝑋 ∧ 𝑊 ) ∈ 𝐵 ) → 𝑠 ≤ ( 𝑠 ∨ ( 𝑋 ∧ 𝑊 ) ) ) |
| 53 | 8 11 27 52 | syl3anc | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻 ) ∧ ( 𝑠 ∈ 𝐴 ∧ ( 𝑋 ∈ 𝐵 ∧ ¬ 𝑋 ≤ 𝑊 ) ∧ 𝑌 ∈ 𝐵 ) ∧ ( ( 𝑠 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ∧ 𝑋 ≤ 𝑌 ) ) → 𝑠 ≤ ( 𝑠 ∨ ( 𝑋 ∧ 𝑊 ) ) ) |
| 54 | 53 21 | breqtrd | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻 ) ∧ ( 𝑠 ∈ 𝐴 ∧ ( 𝑋 ∈ 𝐵 ∧ ¬ 𝑋 ≤ 𝑊 ) ∧ 𝑌 ∈ 𝐵 ) ∧ ( ( 𝑠 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ∧ 𝑋 ≤ 𝑌 ) ) → 𝑠 ≤ 𝑋 ) |
| 55 | 1 2 8 11 18 12 54 22 | lattrd | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻 ) ∧ ( 𝑠 ∈ 𝐴 ∧ ( 𝑋 ∈ 𝐵 ∧ ¬ 𝑋 ≤ 𝑊 ) ∧ 𝑌 ∈ 𝐵 ) ∧ ( ( 𝑠 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ∧ 𝑋 ≤ 𝑌 ) ) → 𝑠 ≤ 𝑌 ) |
| 56 | 1 2 3 | latleeqj1 | ⊢ ( ( 𝐾 ∈ Lat ∧ 𝑠 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵 ) → ( 𝑠 ≤ 𝑌 ↔ ( 𝑠 ∨ 𝑌 ) = 𝑌 ) ) |
| 57 | 8 11 12 56 | syl3anc | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻 ) ∧ ( 𝑠 ∈ 𝐴 ∧ ( 𝑋 ∈ 𝐵 ∧ ¬ 𝑋 ≤ 𝑊 ) ∧ 𝑌 ∈ 𝐵 ) ∧ ( ( 𝑠 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ∧ 𝑋 ≤ 𝑌 ) ) → ( 𝑠 ≤ 𝑌 ↔ ( 𝑠 ∨ 𝑌 ) = 𝑌 ) ) |
| 58 | 55 57 | mpbid | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻 ) ∧ ( 𝑠 ∈ 𝐴 ∧ ( 𝑋 ∈ 𝐵 ∧ ¬ 𝑋 ≤ 𝑊 ) ∧ 𝑌 ∈ 𝐵 ) ∧ ( ( 𝑠 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ∧ 𝑋 ≤ 𝑌 ) ) → ( 𝑠 ∨ 𝑌 ) = 𝑌 ) |
| 59 | 40 51 58 | 3eqtrd | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻 ) ∧ ( 𝑠 ∈ 𝐴 ∧ ( 𝑋 ∈ 𝐵 ∧ ¬ 𝑋 ≤ 𝑊 ) ∧ 𝑌 ∈ 𝐵 ) ∧ ( ( 𝑠 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ∧ 𝑋 ≤ 𝑌 ) ) → ( 𝑠 ∨ ( ( 𝑌 ∧ 𝑊 ) ∨ 𝑋 ) ) = 𝑌 ) |
| 60 | 20 36 59 | 3eqtr3d | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻 ) ∧ ( 𝑠 ∈ 𝐴 ∧ ( 𝑋 ∈ 𝐵 ∧ ¬ 𝑋 ≤ 𝑊 ) ∧ 𝑌 ∈ 𝐵 ) ∧ ( ( 𝑠 ∨ ( 𝑋 ∧ 𝑊 ) ) = 𝑋 ∧ 𝑋 ≤ 𝑌 ) ) → ( 𝑠 ∨ ( 𝑌 ∧ 𝑊 ) ) = 𝑌 ) |