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Description: Lemma for pexmidN . The contradiction of pexmidlem6N and pexmidlem7N shows that there can be no atom p that is not in X .+ ( ._|_X ) , which is therefore the whole atom space. (Contributed by NM, 3-Feb-2012) (New usage is discouraged.)
| Ref | Expression | ||
|---|---|---|---|
| Hypotheses | pexmidALT.a | ⊢ 𝐴 = ( Atoms ‘ 𝐾 ) | |
| pexmidALT.p | ⊢ + = ( +𝑃 ‘ 𝐾 ) | ||
| pexmidALT.o | ⊢ ⊥ = ( ⊥𝑃 ‘ 𝐾 ) | ||
| Assertion | pexmidlem8N | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑋 ⊆ 𝐴 ) ∧ ( ( ⊥ ‘ ( ⊥ ‘ 𝑋 ) ) = 𝑋 ∧ 𝑋 ≠ ∅ ) ) → ( 𝑋 + ( ⊥ ‘ 𝑋 ) ) = 𝐴 ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | pexmidALT.a | ⊢ 𝐴 = ( Atoms ‘ 𝐾 ) | |
| 2 | pexmidALT.p | ⊢ + = ( +𝑃 ‘ 𝐾 ) | |
| 3 | pexmidALT.o | ⊢ ⊥ = ( ⊥𝑃 ‘ 𝐾 ) | |
| 4 | nonconne | ⊢ ¬ ( 𝑋 = 𝑋 ∧ 𝑋 ≠ 𝑋 ) | |
| 5 | simpll | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑋 ⊆ 𝐴 ) ∧ ( ( ⊥ ‘ ( ⊥ ‘ 𝑋 ) ) = 𝑋 ∧ 𝑋 ≠ ∅ ) ) → 𝐾 ∈ HL ) | |
| 6 | simplr | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑋 ⊆ 𝐴 ) ∧ ( ( ⊥ ‘ ( ⊥ ‘ 𝑋 ) ) = 𝑋 ∧ 𝑋 ≠ ∅ ) ) → 𝑋 ⊆ 𝐴 ) | |
| 7 | 1 3 | polssatN | ⊢ ( ( 𝐾 ∈ HL ∧ 𝑋 ⊆ 𝐴 ) → ( ⊥ ‘ 𝑋 ) ⊆ 𝐴 ) |
| 8 | 7 | adantr | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑋 ⊆ 𝐴 ) ∧ ( ( ⊥ ‘ ( ⊥ ‘ 𝑋 ) ) = 𝑋 ∧ 𝑋 ≠ ∅ ) ) → ( ⊥ ‘ 𝑋 ) ⊆ 𝐴 ) |
| 9 | 1 2 | paddssat | ⊢ ( ( 𝐾 ∈ HL ∧ 𝑋 ⊆ 𝐴 ∧ ( ⊥ ‘ 𝑋 ) ⊆ 𝐴 ) → ( 𝑋 + ( ⊥ ‘ 𝑋 ) ) ⊆ 𝐴 ) |
| 10 | 5 6 8 9 | syl3anc | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑋 ⊆ 𝐴 ) ∧ ( ( ⊥ ‘ ( ⊥ ‘ 𝑋 ) ) = 𝑋 ∧ 𝑋 ≠ ∅ ) ) → ( 𝑋 + ( ⊥ ‘ 𝑋 ) ) ⊆ 𝐴 ) |
| 11 | df-pss | ⊢ ( ( 𝑋 + ( ⊥ ‘ 𝑋 ) ) ⊊ 𝐴 ↔ ( ( 𝑋 + ( ⊥ ‘ 𝑋 ) ) ⊆ 𝐴 ∧ ( 𝑋 + ( ⊥ ‘ 𝑋 ) ) ≠ 𝐴 ) ) | |
| 12 | pssnel | ⊢ ( ( 𝑋 + ( ⊥ ‘ 𝑋 ) ) ⊊ 𝐴 → ∃ 𝑝 ( 𝑝 ∈ 𝐴 ∧ ¬ 𝑝 ∈ ( 𝑋 + ( ⊥ ‘ 𝑋 ) ) ) ) | |
| 13 | 11 12 | sylbir | ⊢ ( ( ( 𝑋 + ( ⊥ ‘ 𝑋 ) ) ⊆ 𝐴 ∧ ( 𝑋 + ( ⊥ ‘ 𝑋 ) ) ≠ 𝐴 ) → ∃ 𝑝 ( 𝑝 ∈ 𝐴 ∧ ¬ 𝑝 ∈ ( 𝑋 + ( ⊥ ‘ 𝑋 ) ) ) ) |
| 14 | df-rex | ⊢ ( ∃ 𝑝 ∈ 𝐴 ¬ 𝑝 ∈ ( 𝑋 + ( ⊥ ‘ 𝑋 ) ) ↔ ∃ 𝑝 ( 𝑝 ∈ 𝐴 ∧ ¬ 𝑝 ∈ ( 𝑋 + ( ⊥ ‘ 𝑋 ) ) ) ) | |
| 15 | 13 14 | sylibr | ⊢ ( ( ( 𝑋 + ( ⊥ ‘ 𝑋 ) ) ⊆ 𝐴 ∧ ( 𝑋 + ( ⊥ ‘ 𝑋 ) ) ≠ 𝐴 ) → ∃ 𝑝 ∈ 𝐴 ¬ 𝑝 ∈ ( 𝑋 + ( ⊥ ‘ 𝑋 ) ) ) |
| 16 | simplll | ⊢ ( ( ( ( 𝐾 ∈ HL ∧ 𝑋 ⊆ 𝐴 ) ∧ ( ( ⊥ ‘ ( ⊥ ‘ 𝑋 ) ) = 𝑋 ∧ 𝑋 ≠ ∅ ) ) ∧ ( 𝑝 ∈ 𝐴 ∧ ¬ 𝑝 ∈ ( 𝑋 + ( ⊥ ‘ 𝑋 ) ) ) ) → 𝐾 ∈ HL ) | |
| 17 | simpllr | ⊢ ( ( ( ( 𝐾 ∈ HL ∧ 𝑋 ⊆ 𝐴 ) ∧ ( ( ⊥ ‘ ( ⊥ ‘ 𝑋 ) ) = 𝑋 ∧ 𝑋 ≠ ∅ ) ) ∧ ( 𝑝 ∈ 𝐴 ∧ ¬ 𝑝 ∈ ( 𝑋 + ( ⊥ ‘ 𝑋 ) ) ) ) → 𝑋 ⊆ 𝐴 ) | |
| 18 | simprl | ⊢ ( ( ( ( 𝐾 ∈ HL ∧ 𝑋 ⊆ 𝐴 ) ∧ ( ( ⊥ ‘ ( ⊥ ‘ 𝑋 ) ) = 𝑋 ∧ 𝑋 ≠ ∅ ) ) ∧ ( 𝑝 ∈ 𝐴 ∧ ¬ 𝑝 ∈ ( 𝑋 + ( ⊥ ‘ 𝑋 ) ) ) ) → 𝑝 ∈ 𝐴 ) | |
| 19 | simplrl | ⊢ ( ( ( ( 𝐾 ∈ HL ∧ 𝑋 ⊆ 𝐴 ) ∧ ( ( ⊥ ‘ ( ⊥ ‘ 𝑋 ) ) = 𝑋 ∧ 𝑋 ≠ ∅ ) ) ∧ ( 𝑝 ∈ 𝐴 ∧ ¬ 𝑝 ∈ ( 𝑋 + ( ⊥ ‘ 𝑋 ) ) ) ) → ( ⊥ ‘ ( ⊥ ‘ 𝑋 ) ) = 𝑋 ) | |
| 20 | simplrr | ⊢ ( ( ( ( 𝐾 ∈ HL ∧ 𝑋 ⊆ 𝐴 ) ∧ ( ( ⊥ ‘ ( ⊥ ‘ 𝑋 ) ) = 𝑋 ∧ 𝑋 ≠ ∅ ) ) ∧ ( 𝑝 ∈ 𝐴 ∧ ¬ 𝑝 ∈ ( 𝑋 + ( ⊥ ‘ 𝑋 ) ) ) ) → 𝑋 ≠ ∅ ) | |
| 21 | simprr | ⊢ ( ( ( ( 𝐾 ∈ HL ∧ 𝑋 ⊆ 𝐴 ) ∧ ( ( ⊥ ‘ ( ⊥ ‘ 𝑋 ) ) = 𝑋 ∧ 𝑋 ≠ ∅ ) ) ∧ ( 𝑝 ∈ 𝐴 ∧ ¬ 𝑝 ∈ ( 𝑋 + ( ⊥ ‘ 𝑋 ) ) ) ) → ¬ 𝑝 ∈ ( 𝑋 + ( ⊥ ‘ 𝑋 ) ) ) | |
| 22 | eqid | ⊢ ( le ‘ 𝐾 ) = ( le ‘ 𝐾 ) | |
| 23 | eqid | ⊢ ( join ‘ 𝐾 ) = ( join ‘ 𝐾 ) | |
| 24 | eqid | ⊢ ( 𝑋 + { 𝑝 } ) = ( 𝑋 + { 𝑝 } ) | |
| 25 | 22 23 1 2 3 24 | pexmidlem6N | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑋 ⊆ 𝐴 ∧ 𝑝 ∈ 𝐴 ) ∧ ( ( ⊥ ‘ ( ⊥ ‘ 𝑋 ) ) = 𝑋 ∧ 𝑋 ≠ ∅ ∧ ¬ 𝑝 ∈ ( 𝑋 + ( ⊥ ‘ 𝑋 ) ) ) ) → ( 𝑋 + { 𝑝 } ) = 𝑋 ) |
| 26 | 22 23 1 2 3 24 | pexmidlem7N | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑋 ⊆ 𝐴 ∧ 𝑝 ∈ 𝐴 ) ∧ ( ( ⊥ ‘ ( ⊥ ‘ 𝑋 ) ) = 𝑋 ∧ 𝑋 ≠ ∅ ∧ ¬ 𝑝 ∈ ( 𝑋 + ( ⊥ ‘ 𝑋 ) ) ) ) → ( 𝑋 + { 𝑝 } ) ≠ 𝑋 ) |
| 27 | 25 26 | jca | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑋 ⊆ 𝐴 ∧ 𝑝 ∈ 𝐴 ) ∧ ( ( ⊥ ‘ ( ⊥ ‘ 𝑋 ) ) = 𝑋 ∧ 𝑋 ≠ ∅ ∧ ¬ 𝑝 ∈ ( 𝑋 + ( ⊥ ‘ 𝑋 ) ) ) ) → ( ( 𝑋 + { 𝑝 } ) = 𝑋 ∧ ( 𝑋 + { 𝑝 } ) ≠ 𝑋 ) ) |
| 28 | 16 17 18 19 20 21 27 | syl33anc | ⊢ ( ( ( ( 𝐾 ∈ HL ∧ 𝑋 ⊆ 𝐴 ) ∧ ( ( ⊥ ‘ ( ⊥ ‘ 𝑋 ) ) = 𝑋 ∧ 𝑋 ≠ ∅ ) ) ∧ ( 𝑝 ∈ 𝐴 ∧ ¬ 𝑝 ∈ ( 𝑋 + ( ⊥ ‘ 𝑋 ) ) ) ) → ( ( 𝑋 + { 𝑝 } ) = 𝑋 ∧ ( 𝑋 + { 𝑝 } ) ≠ 𝑋 ) ) |
| 29 | nonconne | ⊢ ¬ ( ( 𝑋 + { 𝑝 } ) = 𝑋 ∧ ( 𝑋 + { 𝑝 } ) ≠ 𝑋 ) | |
| 30 | 29 4 | 2false | ⊢ ( ( ( 𝑋 + { 𝑝 } ) = 𝑋 ∧ ( 𝑋 + { 𝑝 } ) ≠ 𝑋 ) ↔ ( 𝑋 = 𝑋 ∧ 𝑋 ≠ 𝑋 ) ) |
| 31 | 28 30 | sylib | ⊢ ( ( ( ( 𝐾 ∈ HL ∧ 𝑋 ⊆ 𝐴 ) ∧ ( ( ⊥ ‘ ( ⊥ ‘ 𝑋 ) ) = 𝑋 ∧ 𝑋 ≠ ∅ ) ) ∧ ( 𝑝 ∈ 𝐴 ∧ ¬ 𝑝 ∈ ( 𝑋 + ( ⊥ ‘ 𝑋 ) ) ) ) → ( 𝑋 = 𝑋 ∧ 𝑋 ≠ 𝑋 ) ) |
| 32 | 31 | rexlimdvaa | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑋 ⊆ 𝐴 ) ∧ ( ( ⊥ ‘ ( ⊥ ‘ 𝑋 ) ) = 𝑋 ∧ 𝑋 ≠ ∅ ) ) → ( ∃ 𝑝 ∈ 𝐴 ¬ 𝑝 ∈ ( 𝑋 + ( ⊥ ‘ 𝑋 ) ) → ( 𝑋 = 𝑋 ∧ 𝑋 ≠ 𝑋 ) ) ) |
| 33 | 15 32 | syl5 | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑋 ⊆ 𝐴 ) ∧ ( ( ⊥ ‘ ( ⊥ ‘ 𝑋 ) ) = 𝑋 ∧ 𝑋 ≠ ∅ ) ) → ( ( ( 𝑋 + ( ⊥ ‘ 𝑋 ) ) ⊆ 𝐴 ∧ ( 𝑋 + ( ⊥ ‘ 𝑋 ) ) ≠ 𝐴 ) → ( 𝑋 = 𝑋 ∧ 𝑋 ≠ 𝑋 ) ) ) |
| 34 | 10 33 | mpand | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑋 ⊆ 𝐴 ) ∧ ( ( ⊥ ‘ ( ⊥ ‘ 𝑋 ) ) = 𝑋 ∧ 𝑋 ≠ ∅ ) ) → ( ( 𝑋 + ( ⊥ ‘ 𝑋 ) ) ≠ 𝐴 → ( 𝑋 = 𝑋 ∧ 𝑋 ≠ 𝑋 ) ) ) |
| 35 | 34 | necon1bd | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑋 ⊆ 𝐴 ) ∧ ( ( ⊥ ‘ ( ⊥ ‘ 𝑋 ) ) = 𝑋 ∧ 𝑋 ≠ ∅ ) ) → ( ¬ ( 𝑋 = 𝑋 ∧ 𝑋 ≠ 𝑋 ) → ( 𝑋 + ( ⊥ ‘ 𝑋 ) ) = 𝐴 ) ) |
| 36 | 4 35 | mpi | ⊢ ( ( ( 𝐾 ∈ HL ∧ 𝑋 ⊆ 𝐴 ) ∧ ( ( ⊥ ‘ ( ⊥ ‘ 𝑋 ) ) = 𝑋 ∧ 𝑋 ≠ ∅ ) ) → ( 𝑋 + ( ⊥ ‘ 𝑋 ) ) = 𝐴 ) |