| Step | Hyp | Ref | Expression | 
						
							| 1 |  | cdlemef46g.b | ⊢ 𝐵  =  ( Base ‘ 𝐾 ) | 
						
							| 2 |  | cdlemef46g.l | ⊢  ≤   =  ( le ‘ 𝐾 ) | 
						
							| 3 |  | cdlemef46g.j | ⊢  ∨   =  ( join ‘ 𝐾 ) | 
						
							| 4 |  | cdlemef46g.m | ⊢  ∧   =  ( meet ‘ 𝐾 ) | 
						
							| 5 |  | cdlemef46g.a | ⊢ 𝐴  =  ( Atoms ‘ 𝐾 ) | 
						
							| 6 |  | cdlemef46g.h | ⊢ 𝐻  =  ( LHyp ‘ 𝐾 ) | 
						
							| 7 |  | cdlemef46g.u | ⊢ 𝑈  =  ( ( 𝑃  ∨  𝑄 )  ∧  𝑊 ) | 
						
							| 8 |  | cdlemef46g.d | ⊢ 𝐷  =  ( ( 𝑡  ∨  𝑈 )  ∧  ( 𝑄  ∨  ( ( 𝑃  ∨  𝑡 )  ∧  𝑊 ) ) ) | 
						
							| 9 |  | cdlemefs46g.e | ⊢ 𝐸  =  ( ( 𝑃  ∨  𝑄 )  ∧  ( 𝐷  ∨  ( ( 𝑠  ∨  𝑡 )  ∧  𝑊 ) ) ) | 
						
							| 10 |  | cdlemef46g.f | ⊢ 𝐹  =  ( 𝑥  ∈  𝐵  ↦  if ( ( 𝑃  ≠  𝑄  ∧  ¬  𝑥  ≤  𝑊 ) ,  ( ℩ 𝑧  ∈  𝐵 ∀ 𝑠  ∈  𝐴 ( ( ¬  𝑠  ≤  𝑊  ∧  ( 𝑠  ∨  ( 𝑥  ∧  𝑊 ) )  =  𝑥 )  →  𝑧  =  ( if ( 𝑠  ≤  ( 𝑃  ∨  𝑄 ) ,  ( ℩ 𝑦  ∈  𝐵 ∀ 𝑡  ∈  𝐴 ( ( ¬  𝑡  ≤  𝑊  ∧  ¬  𝑡  ≤  ( 𝑃  ∨  𝑄 ) )  →  𝑦  =  𝐸 ) ) ,  ⦋ 𝑠  /  𝑡 ⦌ 𝐷 )  ∨  ( 𝑥  ∧  𝑊 ) ) ) ) ,  𝑥 ) ) | 
						
							| 11 |  | cdlemef46.v | ⊢ 𝑉  =  ( ( 𝑄  ∨  𝑃 )  ∧  𝑊 ) | 
						
							| 12 |  | cdlemef46.n | ⊢ 𝑁  =  ( ( 𝑣  ∨  𝑉 )  ∧  ( 𝑃  ∨  ( ( 𝑄  ∨  𝑣 )  ∧  𝑊 ) ) ) | 
						
							| 13 |  | cdlemefs46.o | ⊢ 𝑂  =  ( ( 𝑄  ∨  𝑃 )  ∧  ( 𝑁  ∨  ( ( 𝑢  ∨  𝑣 )  ∧  𝑊 ) ) ) | 
						
							| 14 |  | cdlemef46.g | ⊢ 𝐺  =  ( 𝑎  ∈  𝐵  ↦  if ( ( 𝑄  ≠  𝑃  ∧  ¬  𝑎  ≤  𝑊 ) ,  ( ℩ 𝑐  ∈  𝐵 ∀ 𝑢  ∈  𝐴 ( ( ¬  𝑢  ≤  𝑊  ∧  ( 𝑢  ∨  ( 𝑎  ∧  𝑊 ) )  =  𝑎 )  →  𝑐  =  ( if ( 𝑢  ≤  ( 𝑄  ∨  𝑃 ) ,  ( ℩ 𝑏  ∈  𝐵 ∀ 𝑣  ∈  𝐴 ( ( ¬  𝑣  ≤  𝑊  ∧  ¬  𝑣  ≤  ( 𝑄  ∨  𝑃 ) )  →  𝑏  =  𝑂 ) ) ,  ⦋ 𝑢  /  𝑣 ⦌ 𝑁 )  ∨  ( 𝑎  ∧  𝑊 ) ) ) ) ,  𝑎 ) ) | 
						
							| 15 |  | simp11 | ⊢ ( ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( 𝑃  ∈  𝐴  ∧  ¬  𝑃  ≤  𝑊 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 ) )  ∧  ( 𝑃  ≠  𝑄  ∧  ( 𝑅  ∈  𝐴  ∧  ¬  𝑅  ≤  𝑊 ) )  ∧  𝑅  ≤  ( 𝑃  ∨  𝑄 ) )  →  ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 ) ) | 
						
							| 16 |  | simp12 | ⊢ ( ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( 𝑃  ∈  𝐴  ∧  ¬  𝑃  ≤  𝑊 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 ) )  ∧  ( 𝑃  ≠  𝑄  ∧  ( 𝑅  ∈  𝐴  ∧  ¬  𝑅  ≤  𝑊 ) )  ∧  𝑅  ≤  ( 𝑃  ∨  𝑄 ) )  →  ( 𝑃  ∈  𝐴  ∧  ¬  𝑃  ≤  𝑊 ) ) | 
						
							| 17 |  | simp13 | ⊢ ( ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( 𝑃  ∈  𝐴  ∧  ¬  𝑃  ≤  𝑊 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 ) )  ∧  ( 𝑃  ≠  𝑄  ∧  ( 𝑅  ∈  𝐴  ∧  ¬  𝑅  ≤  𝑊 ) )  ∧  𝑅  ≤  ( 𝑃  ∨  𝑄 ) )  →  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 ) ) | 
						
							| 18 |  | simp2l | ⊢ ( ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( 𝑃  ∈  𝐴  ∧  ¬  𝑃  ≤  𝑊 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 ) )  ∧  ( 𝑃  ≠  𝑄  ∧  ( 𝑅  ∈  𝐴  ∧  ¬  𝑅  ≤  𝑊 ) )  ∧  𝑅  ≤  ( 𝑃  ∨  𝑄 ) )  →  𝑃  ≠  𝑄 ) | 
						
							| 19 | 2 3 5 6 | cdlemb2 | ⊢ ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( ( 𝑃  ∈  𝐴  ∧  ¬  𝑃  ≤  𝑊 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 ) )  ∧  𝑃  ≠  𝑄 )  →  ∃ 𝑒  ∈  𝐴 ( ¬  𝑒  ≤  𝑊  ∧  ¬  𝑒  ≤  ( 𝑃  ∨  𝑄 ) ) ) | 
						
							| 20 | 15 16 17 18 19 | syl121anc | ⊢ ( ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( 𝑃  ∈  𝐴  ∧  ¬  𝑃  ≤  𝑊 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 ) )  ∧  ( 𝑃  ≠  𝑄  ∧  ( 𝑅  ∈  𝐴  ∧  ¬  𝑅  ≤  𝑊 ) )  ∧  𝑅  ≤  ( 𝑃  ∨  𝑄 ) )  →  ∃ 𝑒  ∈  𝐴 ( ¬  𝑒  ≤  𝑊  ∧  ¬  𝑒  ≤  ( 𝑃  ∨  𝑄 ) ) ) | 
						
							| 21 |  | simp1 | ⊢ ( ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( 𝑃  ∈  𝐴  ∧  ¬  𝑃  ≤  𝑊 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 ) )  ∧  ( 𝑃  ≠  𝑄  ∧  ( 𝑅  ∈  𝐴  ∧  ¬  𝑅  ≤  𝑊 ) )  ∧  ( 𝑅  ≤  ( 𝑃  ∨  𝑄 )  ∧  𝑒  ∈  𝐴  ∧  ( ¬  𝑒  ≤  𝑊  ∧  ¬  𝑒  ≤  ( 𝑃  ∨  𝑄 ) ) ) )  →  ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( 𝑃  ∈  𝐴  ∧  ¬  𝑃  ≤  𝑊 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 ) ) ) | 
						
							| 22 |  | simp2l | ⊢ ( ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( 𝑃  ∈  𝐴  ∧  ¬  𝑃  ≤  𝑊 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 ) )  ∧  ( 𝑃  ≠  𝑄  ∧  ( 𝑅  ∈  𝐴  ∧  ¬  𝑅  ≤  𝑊 ) )  ∧  ( 𝑅  ≤  ( 𝑃  ∨  𝑄 )  ∧  𝑒  ∈  𝐴  ∧  ( ¬  𝑒  ≤  𝑊  ∧  ¬  𝑒  ≤  ( 𝑃  ∨  𝑄 ) ) ) )  →  𝑃  ≠  𝑄 ) | 
						
							| 23 |  | simp2r | ⊢ ( ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( 𝑃  ∈  𝐴  ∧  ¬  𝑃  ≤  𝑊 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 ) )  ∧  ( 𝑃  ≠  𝑄  ∧  ( 𝑅  ∈  𝐴  ∧  ¬  𝑅  ≤  𝑊 ) )  ∧  ( 𝑅  ≤  ( 𝑃  ∨  𝑄 )  ∧  𝑒  ∈  𝐴  ∧  ( ¬  𝑒  ≤  𝑊  ∧  ¬  𝑒  ≤  ( 𝑃  ∨  𝑄 ) ) ) )  →  ( 𝑅  ∈  𝐴  ∧  ¬  𝑅  ≤  𝑊 ) ) | 
						
							| 24 |  | simp32 | ⊢ ( ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( 𝑃  ∈  𝐴  ∧  ¬  𝑃  ≤  𝑊 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 ) )  ∧  ( 𝑃  ≠  𝑄  ∧  ( 𝑅  ∈  𝐴  ∧  ¬  𝑅  ≤  𝑊 ) )  ∧  ( 𝑅  ≤  ( 𝑃  ∨  𝑄 )  ∧  𝑒  ∈  𝐴  ∧  ( ¬  𝑒  ≤  𝑊  ∧  ¬  𝑒  ≤  ( 𝑃  ∨  𝑄 ) ) ) )  →  𝑒  ∈  𝐴 ) | 
						
							| 25 |  | simp33l | ⊢ ( ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( 𝑃  ∈  𝐴  ∧  ¬  𝑃  ≤  𝑊 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 ) )  ∧  ( 𝑃  ≠  𝑄  ∧  ( 𝑅  ∈  𝐴  ∧  ¬  𝑅  ≤  𝑊 ) )  ∧  ( 𝑅  ≤  ( 𝑃  ∨  𝑄 )  ∧  𝑒  ∈  𝐴  ∧  ( ¬  𝑒  ≤  𝑊  ∧  ¬  𝑒  ≤  ( 𝑃  ∨  𝑄 ) ) ) )  →  ¬  𝑒  ≤  𝑊 ) | 
						
							| 26 | 24 25 | jca | ⊢ ( ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( 𝑃  ∈  𝐴  ∧  ¬  𝑃  ≤  𝑊 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 ) )  ∧  ( 𝑃  ≠  𝑄  ∧  ( 𝑅  ∈  𝐴  ∧  ¬  𝑅  ≤  𝑊 ) )  ∧  ( 𝑅  ≤  ( 𝑃  ∨  𝑄 )  ∧  𝑒  ∈  𝐴  ∧  ( ¬  𝑒  ≤  𝑊  ∧  ¬  𝑒  ≤  ( 𝑃  ∨  𝑄 ) ) ) )  →  ( 𝑒  ∈  𝐴  ∧  ¬  𝑒  ≤  𝑊 ) ) | 
						
							| 27 |  | simp31 | ⊢ ( ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( 𝑃  ∈  𝐴  ∧  ¬  𝑃  ≤  𝑊 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 ) )  ∧  ( 𝑃  ≠  𝑄  ∧  ( 𝑅  ∈  𝐴  ∧  ¬  𝑅  ≤  𝑊 ) )  ∧  ( 𝑅  ≤  ( 𝑃  ∨  𝑄 )  ∧  𝑒  ∈  𝐴  ∧  ( ¬  𝑒  ≤  𝑊  ∧  ¬  𝑒  ≤  ( 𝑃  ∨  𝑄 ) ) ) )  →  𝑅  ≤  ( 𝑃  ∨  𝑄 ) ) | 
						
							| 28 |  | simp33r | ⊢ ( ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( 𝑃  ∈  𝐴  ∧  ¬  𝑃  ≤  𝑊 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 ) )  ∧  ( 𝑃  ≠  𝑄  ∧  ( 𝑅  ∈  𝐴  ∧  ¬  𝑅  ≤  𝑊 ) )  ∧  ( 𝑅  ≤  ( 𝑃  ∨  𝑄 )  ∧  𝑒  ∈  𝐴  ∧  ( ¬  𝑒  ≤  𝑊  ∧  ¬  𝑒  ≤  ( 𝑃  ∨  𝑄 ) ) ) )  →  ¬  𝑒  ≤  ( 𝑃  ∨  𝑄 ) ) | 
						
							| 29 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 | cdlemeg46gfr | ⊢ ( ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( 𝑃  ∈  𝐴  ∧  ¬  𝑃  ≤  𝑊 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 ) )  ∧  ( 𝑃  ≠  𝑄  ∧  ( 𝑅  ∈  𝐴  ∧  ¬  𝑅  ≤  𝑊 )  ∧  ( 𝑒  ∈  𝐴  ∧  ¬  𝑒  ≤  𝑊 ) )  ∧  ( 𝑅  ≤  ( 𝑃  ∨  𝑄 )  ∧  ¬  𝑒  ≤  ( 𝑃  ∨  𝑄 ) ) )  →  ( 𝐺 ‘ ( 𝐹 ‘ 𝑅 ) )  =  𝑅 ) | 
						
							| 30 | 21 22 23 26 27 28 29 | syl132anc | ⊢ ( ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( 𝑃  ∈  𝐴  ∧  ¬  𝑃  ≤  𝑊 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 ) )  ∧  ( 𝑃  ≠  𝑄  ∧  ( 𝑅  ∈  𝐴  ∧  ¬  𝑅  ≤  𝑊 ) )  ∧  ( 𝑅  ≤  ( 𝑃  ∨  𝑄 )  ∧  𝑒  ∈  𝐴  ∧  ( ¬  𝑒  ≤  𝑊  ∧  ¬  𝑒  ≤  ( 𝑃  ∨  𝑄 ) ) ) )  →  ( 𝐺 ‘ ( 𝐹 ‘ 𝑅 ) )  =  𝑅 ) | 
						
							| 31 | 30 | 3expia | ⊢ ( ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( 𝑃  ∈  𝐴  ∧  ¬  𝑃  ≤  𝑊 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 ) )  ∧  ( 𝑃  ≠  𝑄  ∧  ( 𝑅  ∈  𝐴  ∧  ¬  𝑅  ≤  𝑊 ) ) )  →  ( ( 𝑅  ≤  ( 𝑃  ∨  𝑄 )  ∧  𝑒  ∈  𝐴  ∧  ( ¬  𝑒  ≤  𝑊  ∧  ¬  𝑒  ≤  ( 𝑃  ∨  𝑄 ) ) )  →  ( 𝐺 ‘ ( 𝐹 ‘ 𝑅 ) )  =  𝑅 ) ) | 
						
							| 32 | 31 | 3expd | ⊢ ( ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( 𝑃  ∈  𝐴  ∧  ¬  𝑃  ≤  𝑊 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 ) )  ∧  ( 𝑃  ≠  𝑄  ∧  ( 𝑅  ∈  𝐴  ∧  ¬  𝑅  ≤  𝑊 ) ) )  →  ( 𝑅  ≤  ( 𝑃  ∨  𝑄 )  →  ( 𝑒  ∈  𝐴  →  ( ( ¬  𝑒  ≤  𝑊  ∧  ¬  𝑒  ≤  ( 𝑃  ∨  𝑄 ) )  →  ( 𝐺 ‘ ( 𝐹 ‘ 𝑅 ) )  =  𝑅 ) ) ) ) | 
						
							| 33 | 32 | 3impia | ⊢ ( ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( 𝑃  ∈  𝐴  ∧  ¬  𝑃  ≤  𝑊 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 ) )  ∧  ( 𝑃  ≠  𝑄  ∧  ( 𝑅  ∈  𝐴  ∧  ¬  𝑅  ≤  𝑊 ) )  ∧  𝑅  ≤  ( 𝑃  ∨  𝑄 ) )  →  ( 𝑒  ∈  𝐴  →  ( ( ¬  𝑒  ≤  𝑊  ∧  ¬  𝑒  ≤  ( 𝑃  ∨  𝑄 ) )  →  ( 𝐺 ‘ ( 𝐹 ‘ 𝑅 ) )  =  𝑅 ) ) ) | 
						
							| 34 | 33 | rexlimdv | ⊢ ( ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( 𝑃  ∈  𝐴  ∧  ¬  𝑃  ≤  𝑊 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 ) )  ∧  ( 𝑃  ≠  𝑄  ∧  ( 𝑅  ∈  𝐴  ∧  ¬  𝑅  ≤  𝑊 ) )  ∧  𝑅  ≤  ( 𝑃  ∨  𝑄 ) )  →  ( ∃ 𝑒  ∈  𝐴 ( ¬  𝑒  ≤  𝑊  ∧  ¬  𝑒  ≤  ( 𝑃  ∨  𝑄 ) )  →  ( 𝐺 ‘ ( 𝐹 ‘ 𝑅 ) )  =  𝑅 ) ) | 
						
							| 35 | 20 34 | mpd | ⊢ ( ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( 𝑃  ∈  𝐴  ∧  ¬  𝑃  ≤  𝑊 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 ) )  ∧  ( 𝑃  ≠  𝑄  ∧  ( 𝑅  ∈  𝐴  ∧  ¬  𝑅  ≤  𝑊 ) )  ∧  𝑅  ≤  ( 𝑃  ∨  𝑄 ) )  →  ( 𝐺 ‘ ( 𝐹 ‘ 𝑅 ) )  =  𝑅 ) |