Theorem cdlemk11tb

Description: Part of proof of Lemma K of Crawley p. 118. Lemma for Eq. 5, p. 119. G , I stand for g, h. cdlemk11ta with hypotheses removed. TODO: Can this be proved directly with no quantification? (Contributed by NM, 21-Jul-2013)

	Ref	Expression
Hypotheses	cdlemk5.b	⊢ 𝐵 = ( Base ‘ 𝐾 )
	cdlemk5.l	⊢ ≤ = ( le ‘ 𝐾 )
	cdlemk5.j	⊢ ∨ = ( join ‘ 𝐾 )
	cdlemk5.m	⊢ ∧ = ( meet ‘ 𝐾 )
	cdlemk5.a	⊢ 𝐴 = ( Atoms ‘ 𝐾 )
	cdlemk5.h	⊢ 𝐻 = ( LHyp ‘ 𝐾 )
	cdlemk5.t	⊢ 𝑇 = ( ( LTrn ‘ 𝐾 ) ‘ 𝑊 )
	cdlemk5.r	⊢ 𝑅 = ( ( trL ‘ 𝐾 ) ‘ 𝑊 )
	cdlemk5.z	⊢ 𝑍 = ( ( 𝑃 ∨ ( 𝑅 ‘ 𝑏 ) ) ∧ ( ( 𝑁 ‘ 𝑃 ) ∨ ( 𝑅 ‘ ( 𝑏 ∘ ◡ 𝐹 ) ) ) )
	cdlemk5.y	⊢ 𝑌 = ( ( 𝑃 ∨ ( 𝑅 ‘ 𝑔 ) ) ∧ ( 𝑍 ∨ ( 𝑅 ‘ ( 𝑔 ∘ ◡ 𝑏 ) ) ) )
Assertion	cdlemk11tb	⊢ ( ( ( ( 𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻 ) ∧ ( 𝐹 ∈ 𝑇 ∧ 𝐹 ≠ ( I ↾ 𝐵 ) ) ∧ ( 𝐺 ∈ 𝑇 ∧ 𝐺 ≠ ( I ↾ 𝐵 ) ) ) ∧ ( 𝑁 ∈ 𝑇 ∧ ( 𝑃 ∈ 𝐴 ∧ ¬ 𝑃 ≤ 𝑊 ) ∧ ( 𝑅 ‘ 𝐹 ) = ( 𝑅 ‘ 𝑁 ) ) ∧ ( 𝑏 ∈ 𝑇 ∧ ( 𝑏 ≠ ( I ↾ 𝐵 ) ∧ ( 𝑅 ‘ 𝑏 ) ≠ ( 𝑅 ‘ 𝐹 ) ∧ ( 𝑅 ‘ 𝑏 ) ≠ ( 𝑅 ‘ 𝐺 ) ) ∧ ( 𝐼 ∈ 𝑇 ∧ 𝐼 ≠ ( I ↾ 𝐵 ) ∧ ( 𝑅 ‘ 𝑏 ) ≠ ( 𝑅 ‘ 𝐼 ) ) ) ) → ⦋ 𝐺 / 𝑔 ⦌ 𝑌 ≤ ( ⦋ 𝐼 / 𝑔 ⦌ 𝑌 ∨ ( 𝑅 ‘ ( 𝐼 ∘ ◡ 𝐺 ) ) ) )

Proof

Step	Hyp	Ref	Expression
1		cdlemk5.b	⊢ 𝐵 = ( Base ‘ 𝐾 )
2		cdlemk5.l	⊢ ≤ = ( le ‘ 𝐾 )
3		cdlemk5.j	⊢ ∨ = ( join ‘ 𝐾 )
4		cdlemk5.m	⊢ ∧ = ( meet ‘ 𝐾 )
5		cdlemk5.a	⊢ 𝐴 = ( Atoms ‘ 𝐾 )
6		cdlemk5.h	⊢ 𝐻 = ( LHyp ‘ 𝐾 )
7		cdlemk5.t	⊢ 𝑇 = ( ( LTrn ‘ 𝐾 ) ‘ 𝑊 )
8		cdlemk5.r	⊢ 𝑅 = ( ( trL ‘ 𝐾 ) ‘ 𝑊 )
9		cdlemk5.z	⊢ 𝑍 = ( ( 𝑃 ∨ ( 𝑅 ‘ 𝑏 ) ) ∧ ( ( 𝑁 ‘ 𝑃 ) ∨ ( 𝑅 ‘ ( 𝑏 ∘ ◡ 𝐹 ) ) ) )
10		cdlemk5.y	⊢ 𝑌 = ( ( 𝑃 ∨ ( 𝑅 ‘ 𝑔 ) ) ∧ ( 𝑍 ∨ ( 𝑅 ‘ ( 𝑔 ∘ ◡ 𝑏 ) ) ) )
11		eqid	⊢ ( 𝑓 ∈ 𝑇 ↦ ( ℩ 𝑖 ∈ 𝑇 ( 𝑖 ‘ 𝑃 ) = ( ( 𝑃 ∨ ( 𝑅 ‘ 𝑓 ) ) ∧ ( ( 𝑁 ‘ 𝑃 ) ∨ ( 𝑅 ‘ ( 𝑓 ∘ ◡ 𝐹 ) ) ) ) ) ) = ( 𝑓 ∈ 𝑇 ↦ ( ℩ 𝑖 ∈ 𝑇 ( 𝑖 ‘ 𝑃 ) = ( ( 𝑃 ∨ ( 𝑅 ‘ 𝑓 ) ) ∧ ( ( 𝑁 ‘ 𝑃 ) ∨ ( 𝑅 ‘ ( 𝑓 ∘ ◡ 𝐹 ) ) ) ) ) )
12		eqid	⊢ ( 𝑒 ∈ 𝑇 ↦ ( ℩ 𝑗 ∈ 𝑇 ( 𝑗 ‘ 𝑃 ) = ( ( 𝑃 ∨ ( 𝑅 ‘ 𝑒 ) ) ∧ ( ( ( ( 𝑓 ∈ 𝑇 ↦ ( ℩ 𝑖 ∈ 𝑇 ( 𝑖 ‘ 𝑃 ) = ( ( 𝑃 ∨ ( 𝑅 ‘ 𝑓 ) ) ∧ ( ( 𝑁 ‘ 𝑃 ) ∨ ( 𝑅 ‘ ( 𝑓 ∘ ◡ 𝐹 ) ) ) ) ) ) ‘ 𝑏 ) ‘ 𝑃 ) ∨ ( 𝑅 ‘ ( 𝑒 ∘ ◡ 𝑏 ) ) ) ) ) ) = ( 𝑒 ∈ 𝑇 ↦ ( ℩ 𝑗 ∈ 𝑇 ( 𝑗 ‘ 𝑃 ) = ( ( 𝑃 ∨ ( 𝑅 ‘ 𝑒 ) ) ∧ ( ( ( ( 𝑓 ∈ 𝑇 ↦ ( ℩ 𝑖 ∈ 𝑇 ( 𝑖 ‘ 𝑃 ) = ( ( 𝑃 ∨ ( 𝑅 ‘ 𝑓 ) ) ∧ ( ( 𝑁 ‘ 𝑃 ) ∨ ( 𝑅 ‘ ( 𝑓 ∘ ◡ 𝐹 ) ) ) ) ) ) ‘ 𝑏 ) ‘ 𝑃 ) ∨ ( 𝑅 ‘ ( 𝑒 ∘ ◡ 𝑏 ) ) ) ) ) )
13	1 2 3 4 5 6 7 8 9 10 11 12	cdlemk11ta	⊢ ( ( ( ( 𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻 ) ∧ ( 𝐹 ∈ 𝑇 ∧ 𝐹 ≠ ( I ↾ 𝐵 ) ) ∧ ( 𝐺 ∈ 𝑇 ∧ 𝐺 ≠ ( I ↾ 𝐵 ) ) ) ∧ ( 𝑁 ∈ 𝑇 ∧ ( 𝑃 ∈ 𝐴 ∧ ¬ 𝑃 ≤ 𝑊 ) ∧ ( 𝑅 ‘ 𝐹 ) = ( 𝑅 ‘ 𝑁 ) ) ∧ ( 𝑏 ∈ 𝑇 ∧ ( 𝑏 ≠ ( I ↾ 𝐵 ) ∧ ( 𝑅 ‘ 𝑏 ) ≠ ( 𝑅 ‘ 𝐹 ) ∧ ( 𝑅 ‘ 𝑏 ) ≠ ( 𝑅 ‘ 𝐺 ) ) ∧ ( 𝐼 ∈ 𝑇 ∧ 𝐼 ≠ ( I ↾ 𝐵 ) ∧ ( 𝑅 ‘ 𝑏 ) ≠ ( 𝑅 ‘ 𝐼 ) ) ) ) → ⦋ 𝐺 / 𝑔 ⦌ 𝑌 ≤ ( ⦋ 𝐼 / 𝑔 ⦌ 𝑌 ∨ ( 𝑅 ‘ ( 𝐼 ∘ ◡ 𝐺 ) ) ) )