| Step | Hyp | Ref | Expression | 
						
							| 1 |  | cdlemg12.l | ⊢  ≤   =  ( le ‘ 𝐾 ) | 
						
							| 2 |  | cdlemg12.j | ⊢  ∨   =  ( join ‘ 𝐾 ) | 
						
							| 3 |  | cdlemg12.m | ⊢  ∧   =  ( meet ‘ 𝐾 ) | 
						
							| 4 |  | cdlemg12.a | ⊢ 𝐴  =  ( Atoms ‘ 𝐾 ) | 
						
							| 5 |  | cdlemg12.h | ⊢ 𝐻  =  ( LHyp ‘ 𝐾 ) | 
						
							| 6 |  | cdlemg12.t | ⊢ 𝑇  =  ( ( LTrn ‘ 𝐾 ) ‘ 𝑊 ) | 
						
							| 7 |  | cdlemg12b.r | ⊢ 𝑅  =  ( ( trL ‘ 𝐾 ) ‘ 𝑊 ) | 
						
							| 8 |  | simp1 | ⊢ ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( ( 𝑃  ∈  𝐴  ∧  ¬  𝑃  ≤  𝑊 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 )  ∧  𝐹  ∈  𝑇 )  ∧  ( 𝐺  ∈  𝑇  ∧  𝑃  ≠  𝑄  ∧  ¬  ( 𝑅 ‘ 𝐺 )  ≤  ( 𝑃  ∨  𝑄 ) ) )  →  ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 ) ) | 
						
							| 9 |  | simp2 | ⊢ ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( ( 𝑃  ∈  𝐴  ∧  ¬  𝑃  ≤  𝑊 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 )  ∧  𝐹  ∈  𝑇 )  ∧  ( 𝐺  ∈  𝑇  ∧  𝑃  ≠  𝑄  ∧  ¬  ( 𝑅 ‘ 𝐺 )  ≤  ( 𝑃  ∨  𝑄 ) ) )  →  ( ( 𝑃  ∈  𝐴  ∧  ¬  𝑃  ≤  𝑊 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 )  ∧  𝐹  ∈  𝑇 ) ) | 
						
							| 10 |  | simp31 | ⊢ ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( ( 𝑃  ∈  𝐴  ∧  ¬  𝑃  ≤  𝑊 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 )  ∧  𝐹  ∈  𝑇 )  ∧  ( 𝐺  ∈  𝑇  ∧  𝑃  ≠  𝑄  ∧  ¬  ( 𝑅 ‘ 𝐺 )  ≤  ( 𝑃  ∨  𝑄 ) ) )  →  𝐺  ∈  𝑇 ) | 
						
							| 11 |  | simp32 | ⊢ ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( ( 𝑃  ∈  𝐴  ∧  ¬  𝑃  ≤  𝑊 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 )  ∧  𝐹  ∈  𝑇 )  ∧  ( 𝐺  ∈  𝑇  ∧  𝑃  ≠  𝑄  ∧  ¬  ( 𝑅 ‘ 𝐺 )  ≤  ( 𝑃  ∨  𝑄 ) ) )  →  𝑃  ≠  𝑄 ) | 
						
							| 12 |  | simp21 | ⊢ ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( ( 𝑃  ∈  𝐴  ∧  ¬  𝑃  ≤  𝑊 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 )  ∧  𝐹  ∈  𝑇 )  ∧  ( 𝐺  ∈  𝑇  ∧  𝑃  ≠  𝑄  ∧  ¬  ( 𝑅 ‘ 𝐺 )  ≤  ( 𝑃  ∨  𝑄 ) ) )  →  ( 𝑃  ∈  𝐴  ∧  ¬  𝑃  ≤  𝑊 ) ) | 
						
							| 13 |  | simp22l | ⊢ ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( ( 𝑃  ∈  𝐴  ∧  ¬  𝑃  ≤  𝑊 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 )  ∧  𝐹  ∈  𝑇 )  ∧  ( 𝐺  ∈  𝑇  ∧  𝑃  ≠  𝑄  ∧  ¬  ( 𝑅 ‘ 𝐺 )  ≤  ( 𝑃  ∨  𝑄 ) ) )  →  𝑄  ∈  𝐴 ) | 
						
							| 14 |  | simp33 | ⊢ ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( ( 𝑃  ∈  𝐴  ∧  ¬  𝑃  ≤  𝑊 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 )  ∧  𝐹  ∈  𝑇 )  ∧  ( 𝐺  ∈  𝑇  ∧  𝑃  ≠  𝑄  ∧  ¬  ( 𝑅 ‘ 𝐺 )  ≤  ( 𝑃  ∨  𝑄 ) ) )  →  ¬  ( 𝑅 ‘ 𝐺 )  ≤  ( 𝑃  ∨  𝑄 ) ) | 
						
							| 15 | 1 2 3 4 5 6 7 | cdlemg11b | ⊢ ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( ( 𝑃  ∈  𝐴  ∧  ¬  𝑃  ≤  𝑊 )  ∧  𝑄  ∈  𝐴 )  ∧  ( 𝐺  ∈  𝑇  ∧  𝑃  ≠  𝑄  ∧  ¬  ( 𝑅 ‘ 𝐺 )  ≤  ( 𝑃  ∨  𝑄 ) ) )  →  ( 𝑃  ∨  𝑄 )  ≠  ( ( 𝐺 ‘ 𝑃 )  ∨  ( 𝐺 ‘ 𝑄 ) ) ) | 
						
							| 16 | 8 12 13 10 11 14 15 | syl123anc | ⊢ ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( ( 𝑃  ∈  𝐴  ∧  ¬  𝑃  ≤  𝑊 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 )  ∧  𝐹  ∈  𝑇 )  ∧  ( 𝐺  ∈  𝑇  ∧  𝑃  ≠  𝑄  ∧  ¬  ( 𝑅 ‘ 𝐺 )  ≤  ( 𝑃  ∨  𝑄 ) ) )  →  ( 𝑃  ∨  𝑄 )  ≠  ( ( 𝐺 ‘ 𝑃 )  ∨  ( 𝐺 ‘ 𝑄 ) ) ) | 
						
							| 17 |  | simp1l | ⊢ ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( ( 𝑃  ∈  𝐴  ∧  ¬  𝑃  ≤  𝑊 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 )  ∧  𝐹  ∈  𝑇 )  ∧  ( 𝐺  ∈  𝑇  ∧  𝑃  ≠  𝑄  ∧  ¬  ( 𝑅 ‘ 𝐺 )  ≤  ( 𝑃  ∨  𝑄 ) ) )  →  𝐾  ∈  HL ) | 
						
							| 18 |  | simp1r | ⊢ ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( ( 𝑃  ∈  𝐴  ∧  ¬  𝑃  ≤  𝑊 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 )  ∧  𝐹  ∈  𝑇 )  ∧  ( 𝐺  ∈  𝑇  ∧  𝑃  ≠  𝑄  ∧  ¬  ( 𝑅 ‘ 𝐺 )  ≤  ( 𝑃  ∨  𝑄 ) ) )  →  𝑊  ∈  𝐻 ) | 
						
							| 19 |  | eqid | ⊢ ( ( 𝑃  ∨  𝑄 )  ∧  𝑊 )  =  ( ( 𝑃  ∨  𝑄 )  ∧  𝑊 ) | 
						
							| 20 | 1 2 3 4 5 19 | cdlemg3a | ⊢ ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( 𝑃  ∈  𝐴  ∧  ¬  𝑃  ≤  𝑊 )  ∧  𝑄  ∈  𝐴 )  →  ( 𝑃  ∨  𝑄 )  =  ( 𝑃  ∨  ( ( 𝑃  ∨  𝑄 )  ∧  𝑊 ) ) ) | 
						
							| 21 | 17 18 12 13 20 | syl211anc | ⊢ ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( ( 𝑃  ∈  𝐴  ∧  ¬  𝑃  ≤  𝑊 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 )  ∧  𝐹  ∈  𝑇 )  ∧  ( 𝐺  ∈  𝑇  ∧  𝑃  ≠  𝑄  ∧  ¬  ( 𝑅 ‘ 𝐺 )  ≤  ( 𝑃  ∨  𝑄 ) ) )  →  ( 𝑃  ∨  𝑄 )  =  ( 𝑃  ∨  ( ( 𝑃  ∨  𝑄 )  ∧  𝑊 ) ) ) | 
						
							| 22 |  | simp22 | ⊢ ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( ( 𝑃  ∈  𝐴  ∧  ¬  𝑃  ≤  𝑊 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 )  ∧  𝐹  ∈  𝑇 )  ∧  ( 𝐺  ∈  𝑇  ∧  𝑃  ≠  𝑄  ∧  ¬  ( 𝑅 ‘ 𝐺 )  ≤  ( 𝑃  ∨  𝑄 ) ) )  →  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 ) ) | 
						
							| 23 | 5 6 1 2 4 3 19 | cdlemg2k | ⊢ ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( ( 𝑃  ∈  𝐴  ∧  ¬  𝑃  ≤  𝑊 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 ) )  ∧  𝐺  ∈  𝑇 )  →  ( ( 𝐺 ‘ 𝑃 )  ∨  ( 𝐺 ‘ 𝑄 ) )  =  ( ( 𝐺 ‘ 𝑃 )  ∨  ( ( 𝑃  ∨  𝑄 )  ∧  𝑊 ) ) ) | 
						
							| 24 | 8 12 22 10 23 | syl121anc | ⊢ ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( ( 𝑃  ∈  𝐴  ∧  ¬  𝑃  ≤  𝑊 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 )  ∧  𝐹  ∈  𝑇 )  ∧  ( 𝐺  ∈  𝑇  ∧  𝑃  ≠  𝑄  ∧  ¬  ( 𝑅 ‘ 𝐺 )  ≤  ( 𝑃  ∨  𝑄 ) ) )  →  ( ( 𝐺 ‘ 𝑃 )  ∨  ( 𝐺 ‘ 𝑄 ) )  =  ( ( 𝐺 ‘ 𝑃 )  ∨  ( ( 𝑃  ∨  𝑄 )  ∧  𝑊 ) ) ) | 
						
							| 25 | 16 21 24 | 3netr3d | ⊢ ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( ( 𝑃  ∈  𝐴  ∧  ¬  𝑃  ≤  𝑊 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 )  ∧  𝐹  ∈  𝑇 )  ∧  ( 𝐺  ∈  𝑇  ∧  𝑃  ≠  𝑄  ∧  ¬  ( 𝑅 ‘ 𝐺 )  ≤  ( 𝑃  ∨  𝑄 ) ) )  →  ( 𝑃  ∨  ( ( 𝑃  ∨  𝑄 )  ∧  𝑊 ) )  ≠  ( ( 𝐺 ‘ 𝑃 )  ∨  ( ( 𝑃  ∨  𝑄 )  ∧  𝑊 ) ) ) | 
						
							| 26 | 1 2 3 4 5 6 19 | cdlemg12a | ⊢ ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( ( 𝑃  ∈  𝐴  ∧  ¬  𝑃  ≤  𝑊 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 )  ∧  𝐹  ∈  𝑇 )  ∧  ( 𝐺  ∈  𝑇  ∧  𝑃  ≠  𝑄  ∧  ( 𝑃  ∨  ( ( 𝑃  ∨  𝑄 )  ∧  𝑊 ) )  ≠  ( ( 𝐺 ‘ 𝑃 )  ∨  ( ( 𝑃  ∨  𝑄 )  ∧  𝑊 ) ) ) )  →  ( ( 𝑃  ∨  ( ( 𝑃  ∨  𝑄 )  ∧  𝑊 ) )  ∧  ( ( 𝐺 ‘ 𝑃 )  ∨  ( ( 𝑃  ∨  𝑄 )  ∧  𝑊 ) ) )  ≤  ( ( 𝐹 ‘ ( 𝐺 ‘ 𝑃 ) )  ∨  ( ( 𝑃  ∨  𝑄 )  ∧  𝑊 ) ) ) | 
						
							| 27 | 8 9 10 11 25 26 | syl113anc | ⊢ ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( ( 𝑃  ∈  𝐴  ∧  ¬  𝑃  ≤  𝑊 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 )  ∧  𝐹  ∈  𝑇 )  ∧  ( 𝐺  ∈  𝑇  ∧  𝑃  ≠  𝑄  ∧  ¬  ( 𝑅 ‘ 𝐺 )  ≤  ( 𝑃  ∨  𝑄 ) ) )  →  ( ( 𝑃  ∨  ( ( 𝑃  ∨  𝑄 )  ∧  𝑊 ) )  ∧  ( ( 𝐺 ‘ 𝑃 )  ∨  ( ( 𝑃  ∨  𝑄 )  ∧  𝑊 ) ) )  ≤  ( ( 𝐹 ‘ ( 𝐺 ‘ 𝑃 ) )  ∨  ( ( 𝑃  ∨  𝑄 )  ∧  𝑊 ) ) ) | 
						
							| 28 | 21 24 | oveq12d | ⊢ ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( ( 𝑃  ∈  𝐴  ∧  ¬  𝑃  ≤  𝑊 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 )  ∧  𝐹  ∈  𝑇 )  ∧  ( 𝐺  ∈  𝑇  ∧  𝑃  ≠  𝑄  ∧  ¬  ( 𝑅 ‘ 𝐺 )  ≤  ( 𝑃  ∨  𝑄 ) ) )  →  ( ( 𝑃  ∨  𝑄 )  ∧  ( ( 𝐺 ‘ 𝑃 )  ∨  ( 𝐺 ‘ 𝑄 ) ) )  =  ( ( 𝑃  ∨  ( ( 𝑃  ∨  𝑄 )  ∧  𝑊 ) )  ∧  ( ( 𝐺 ‘ 𝑃 )  ∨  ( ( 𝑃  ∨  𝑄 )  ∧  𝑊 ) ) ) ) | 
						
							| 29 |  | simp23 | ⊢ ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( ( 𝑃  ∈  𝐴  ∧  ¬  𝑃  ≤  𝑊 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 )  ∧  𝐹  ∈  𝑇 )  ∧  ( 𝐺  ∈  𝑇  ∧  𝑃  ≠  𝑄  ∧  ¬  ( 𝑅 ‘ 𝐺 )  ≤  ( 𝑃  ∨  𝑄 ) ) )  →  𝐹  ∈  𝑇 ) | 
						
							| 30 | 5 6 1 2 4 3 19 | cdlemg2l | ⊢ ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( ( 𝑃  ∈  𝐴  ∧  ¬  𝑃  ≤  𝑊 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 ) )  ∧  ( 𝐹  ∈  𝑇  ∧  𝐺  ∈  𝑇 ) )  →  ( ( 𝐹 ‘ ( 𝐺 ‘ 𝑃 ) )  ∨  ( 𝐹 ‘ ( 𝐺 ‘ 𝑄 ) ) )  =  ( ( 𝐹 ‘ ( 𝐺 ‘ 𝑃 ) )  ∨  ( ( 𝑃  ∨  𝑄 )  ∧  𝑊 ) ) ) | 
						
							| 31 | 8 12 22 29 10 30 | syl122anc | ⊢ ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( ( 𝑃  ∈  𝐴  ∧  ¬  𝑃  ≤  𝑊 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 )  ∧  𝐹  ∈  𝑇 )  ∧  ( 𝐺  ∈  𝑇  ∧  𝑃  ≠  𝑄  ∧  ¬  ( 𝑅 ‘ 𝐺 )  ≤  ( 𝑃  ∨  𝑄 ) ) )  →  ( ( 𝐹 ‘ ( 𝐺 ‘ 𝑃 ) )  ∨  ( 𝐹 ‘ ( 𝐺 ‘ 𝑄 ) ) )  =  ( ( 𝐹 ‘ ( 𝐺 ‘ 𝑃 ) )  ∨  ( ( 𝑃  ∨  𝑄 )  ∧  𝑊 ) ) ) | 
						
							| 32 | 27 28 31 | 3brtr4d | ⊢ ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( ( 𝑃  ∈  𝐴  ∧  ¬  𝑃  ≤  𝑊 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 )  ∧  𝐹  ∈  𝑇 )  ∧  ( 𝐺  ∈  𝑇  ∧  𝑃  ≠  𝑄  ∧  ¬  ( 𝑅 ‘ 𝐺 )  ≤  ( 𝑃  ∨  𝑄 ) ) )  →  ( ( 𝑃  ∨  𝑄 )  ∧  ( ( 𝐺 ‘ 𝑃 )  ∨  ( 𝐺 ‘ 𝑄 ) ) )  ≤  ( ( 𝐹 ‘ ( 𝐺 ‘ 𝑃 ) )  ∨  ( 𝐹 ‘ ( 𝐺 ‘ 𝑄 ) ) ) ) |