| Step | 
						Hyp | 
						Ref | 
						Expression | 
					
						
							| 1 | 
							
								
							 | 
							cdlemef46.b | 
							⊢ 𝐵  =  ( Base ‘ 𝐾 )  | 
						
						
							| 2 | 
							
								
							 | 
							cdlemef46.l | 
							⊢  ≤   =  ( le ‘ 𝐾 )  | 
						
						
							| 3 | 
							
								
							 | 
							cdlemef46.j | 
							⊢  ∨   =  ( join ‘ 𝐾 )  | 
						
						
							| 4 | 
							
								
							 | 
							cdlemef46.m | 
							⊢  ∧   =  ( meet ‘ 𝐾 )  | 
						
						
							| 5 | 
							
								
							 | 
							cdlemef46.a | 
							⊢ 𝐴  =  ( Atoms ‘ 𝐾 )  | 
						
						
							| 6 | 
							
								
							 | 
							cdlemef46.h | 
							⊢ 𝐻  =  ( LHyp ‘ 𝐾 )  | 
						
						
							| 7 | 
							
								
							 | 
							cdlemef46.u | 
							⊢ 𝑈  =  ( ( 𝑃  ∨  𝑄 )  ∧  𝑊 )  | 
						
						
							| 8 | 
							
								
							 | 
							cdlemef46.d | 
							⊢ 𝐷  =  ( ( 𝑡  ∨  𝑈 )  ∧  ( 𝑄  ∨  ( ( 𝑃  ∨  𝑡 )  ∧  𝑊 ) ) )  | 
						
						
							| 9 | 
							
								
							 | 
							cdlemefs46.e | 
							⊢ 𝐸  =  ( ( 𝑃  ∨  𝑄 )  ∧  ( 𝐷  ∨  ( ( 𝑠  ∨  𝑡 )  ∧  𝑊 ) ) )  | 
						
						
							| 10 | 
							
								
							 | 
							cdlemef46.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 | 
							
								
							 | 
							simp1 | 
							⊢ ( ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( 𝑃  ∈  𝐴  ∧  ¬  𝑃  ≤  𝑊 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 ) )  ∧  ( 𝑃  ≠  𝑄  ∧  ( 𝑋  ∈  𝐵  ∧  ¬  𝑋  ≤  𝑊 ) )  ∧  ( ( 𝑆  ∈  𝐴  ∧  ¬  𝑆  ≤  𝑊 )  ∧  ( 𝑆  ∨  ( 𝑋  ∧  𝑊 ) )  =  𝑋 ) )  →  ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( 𝑃  ∈  𝐴  ∧  ¬  𝑃  ≤  𝑊 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 ) ) )  | 
						
						
							| 12 | 
							
								
							 | 
							simp3l | 
							⊢ ( ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( 𝑃  ∈  𝐴  ∧  ¬  𝑃  ≤  𝑊 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 ) )  ∧  ( 𝑃  ≠  𝑄  ∧  ( 𝑋  ∈  𝐵  ∧  ¬  𝑋  ≤  𝑊 ) )  ∧  ( ( 𝑆  ∈  𝐴  ∧  ¬  𝑆  ≤  𝑊 )  ∧  ( 𝑆  ∨  ( 𝑋  ∧  𝑊 ) )  =  𝑋 ) )  →  ( 𝑆  ∈  𝐴  ∧  ¬  𝑆  ≤  𝑊 ) )  | 
						
						
							| 13 | 
							
								1 2 3 4 5 6 7 8 9 10
							 | 
							cdleme46fvaw | 
							⊢ ( ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( 𝑃  ∈  𝐴  ∧  ¬  𝑃  ≤  𝑊 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 ) )  ∧  ( 𝑆  ∈  𝐴  ∧  ¬  𝑆  ≤  𝑊 ) )  →  ( ( 𝐹 ‘ 𝑆 )  ∈  𝐴  ∧  ¬  ( 𝐹 ‘ 𝑆 )  ≤  𝑊 ) )  | 
						
						
							| 14 | 
							
								11 12 13
							 | 
							syl2anc | 
							⊢ ( ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( 𝑃  ∈  𝐴  ∧  ¬  𝑃  ≤  𝑊 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 ) )  ∧  ( 𝑃  ≠  𝑄  ∧  ( 𝑋  ∈  𝐵  ∧  ¬  𝑋  ≤  𝑊 ) )  ∧  ( ( 𝑆  ∈  𝐴  ∧  ¬  𝑆  ≤  𝑊 )  ∧  ( 𝑆  ∨  ( 𝑋  ∧  𝑊 ) )  =  𝑋 ) )  →  ( ( 𝐹 ‘ 𝑆 )  ∈  𝐴  ∧  ¬  ( 𝐹 ‘ 𝑆 )  ≤  𝑊 ) )  | 
						
						
							| 15 | 
							
								14
							 | 
							simprd | 
							⊢ ( ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( 𝑃  ∈  𝐴  ∧  ¬  𝑃  ≤  𝑊 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 ) )  ∧  ( 𝑃  ≠  𝑄  ∧  ( 𝑋  ∈  𝐵  ∧  ¬  𝑋  ≤  𝑊 ) )  ∧  ( ( 𝑆  ∈  𝐴  ∧  ¬  𝑆  ≤  𝑊 )  ∧  ( 𝑆  ∨  ( 𝑋  ∧  𝑊 ) )  =  𝑋 ) )  →  ¬  ( 𝐹 ‘ 𝑆 )  ≤  𝑊 )  | 
						
						
							| 16 | 
							
								
							 | 
							simp11l | 
							⊢ ( ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( 𝑃  ∈  𝐴  ∧  ¬  𝑃  ≤  𝑊 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 ) )  ∧  ( 𝑃  ≠  𝑄  ∧  ( 𝑋  ∈  𝐵  ∧  ¬  𝑋  ≤  𝑊 ) )  ∧  ( ( 𝑆  ∈  𝐴  ∧  ¬  𝑆  ≤  𝑊 )  ∧  ( 𝑆  ∨  ( 𝑋  ∧  𝑊 ) )  =  𝑋 ) )  →  𝐾  ∈  HL )  | 
						
						
							| 17 | 
							
								16
							 | 
							hllatd | 
							⊢ ( ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( 𝑃  ∈  𝐴  ∧  ¬  𝑃  ≤  𝑊 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 ) )  ∧  ( 𝑃  ≠  𝑄  ∧  ( 𝑋  ∈  𝐵  ∧  ¬  𝑋  ≤  𝑊 ) )  ∧  ( ( 𝑆  ∈  𝐴  ∧  ¬  𝑆  ≤  𝑊 )  ∧  ( 𝑆  ∨  ( 𝑋  ∧  𝑊 ) )  =  𝑋 ) )  →  𝐾  ∈  Lat )  | 
						
						
							| 18 | 
							
								14
							 | 
							simpld | 
							⊢ ( ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( 𝑃  ∈  𝐴  ∧  ¬  𝑃  ≤  𝑊 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 ) )  ∧  ( 𝑃  ≠  𝑄  ∧  ( 𝑋  ∈  𝐵  ∧  ¬  𝑋  ≤  𝑊 ) )  ∧  ( ( 𝑆  ∈  𝐴  ∧  ¬  𝑆  ≤  𝑊 )  ∧  ( 𝑆  ∨  ( 𝑋  ∧  𝑊 ) )  =  𝑋 ) )  →  ( 𝐹 ‘ 𝑆 )  ∈  𝐴 )  | 
						
						
							| 19 | 
							
								1 5
							 | 
							atbase | 
							⊢ ( ( 𝐹 ‘ 𝑆 )  ∈  𝐴  →  ( 𝐹 ‘ 𝑆 )  ∈  𝐵 )  | 
						
						
							| 20 | 
							
								18 19
							 | 
							syl | 
							⊢ ( ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( 𝑃  ∈  𝐴  ∧  ¬  𝑃  ≤  𝑊 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 ) )  ∧  ( 𝑃  ≠  𝑄  ∧  ( 𝑋  ∈  𝐵  ∧  ¬  𝑋  ≤  𝑊 ) )  ∧  ( ( 𝑆  ∈  𝐴  ∧  ¬  𝑆  ≤  𝑊 )  ∧  ( 𝑆  ∨  ( 𝑋  ∧  𝑊 ) )  =  𝑋 ) )  →  ( 𝐹 ‘ 𝑆 )  ∈  𝐵 )  | 
						
						
							| 21 | 
							
								
							 | 
							simp2rl | 
							⊢ ( ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( 𝑃  ∈  𝐴  ∧  ¬  𝑃  ≤  𝑊 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 ) )  ∧  ( 𝑃  ≠  𝑄  ∧  ( 𝑋  ∈  𝐵  ∧  ¬  𝑋  ≤  𝑊 ) )  ∧  ( ( 𝑆  ∈  𝐴  ∧  ¬  𝑆  ≤  𝑊 )  ∧  ( 𝑆  ∨  ( 𝑋  ∧  𝑊 ) )  =  𝑋 ) )  →  𝑋  ∈  𝐵 )  | 
						
						
							| 22 | 
							
								
							 | 
							simp11r | 
							⊢ ( ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( 𝑃  ∈  𝐴  ∧  ¬  𝑃  ≤  𝑊 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 ) )  ∧  ( 𝑃  ≠  𝑄  ∧  ( 𝑋  ∈  𝐵  ∧  ¬  𝑋  ≤  𝑊 ) )  ∧  ( ( 𝑆  ∈  𝐴  ∧  ¬  𝑆  ≤  𝑊 )  ∧  ( 𝑆  ∨  ( 𝑋  ∧  𝑊 ) )  =  𝑋 ) )  →  𝑊  ∈  𝐻 )  | 
						
						
							| 23 | 
							
								1 6
							 | 
							lhpbase | 
							⊢ ( 𝑊  ∈  𝐻  →  𝑊  ∈  𝐵 )  | 
						
						
							| 24 | 
							
								22 23
							 | 
							syl | 
							⊢ ( ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( 𝑃  ∈  𝐴  ∧  ¬  𝑃  ≤  𝑊 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 ) )  ∧  ( 𝑃  ≠  𝑄  ∧  ( 𝑋  ∈  𝐵  ∧  ¬  𝑋  ≤  𝑊 ) )  ∧  ( ( 𝑆  ∈  𝐴  ∧  ¬  𝑆  ≤  𝑊 )  ∧  ( 𝑆  ∨  ( 𝑋  ∧  𝑊 ) )  =  𝑋 ) )  →  𝑊  ∈  𝐵 )  | 
						
						
							| 25 | 
							
								1 4
							 | 
							latmcl | 
							⊢ ( ( 𝐾  ∈  Lat  ∧  𝑋  ∈  𝐵  ∧  𝑊  ∈  𝐵 )  →  ( 𝑋  ∧  𝑊 )  ∈  𝐵 )  | 
						
						
							| 26 | 
							
								17 21 24 25
							 | 
							syl3anc | 
							⊢ ( ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( 𝑃  ∈  𝐴  ∧  ¬  𝑃  ≤  𝑊 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 ) )  ∧  ( 𝑃  ≠  𝑄  ∧  ( 𝑋  ∈  𝐵  ∧  ¬  𝑋  ≤  𝑊 ) )  ∧  ( ( 𝑆  ∈  𝐴  ∧  ¬  𝑆  ≤  𝑊 )  ∧  ( 𝑆  ∨  ( 𝑋  ∧  𝑊 ) )  =  𝑋 ) )  →  ( 𝑋  ∧  𝑊 )  ∈  𝐵 )  | 
						
						
							| 27 | 
							
								1 2 3
							 | 
							latlej1 | 
							⊢ ( ( 𝐾  ∈  Lat  ∧  ( 𝐹 ‘ 𝑆 )  ∈  𝐵  ∧  ( 𝑋  ∧  𝑊 )  ∈  𝐵 )  →  ( 𝐹 ‘ 𝑆 )  ≤  ( ( 𝐹 ‘ 𝑆 )  ∨  ( 𝑋  ∧  𝑊 ) ) )  | 
						
						
							| 28 | 
							
								17 20 26 27
							 | 
							syl3anc | 
							⊢ ( ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( 𝑃  ∈  𝐴  ∧  ¬  𝑃  ≤  𝑊 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 ) )  ∧  ( 𝑃  ≠  𝑄  ∧  ( 𝑋  ∈  𝐵  ∧  ¬  𝑋  ≤  𝑊 ) )  ∧  ( ( 𝑆  ∈  𝐴  ∧  ¬  𝑆  ≤  𝑊 )  ∧  ( 𝑆  ∨  ( 𝑋  ∧  𝑊 ) )  =  𝑋 ) )  →  ( 𝐹 ‘ 𝑆 )  ≤  ( ( 𝐹 ‘ 𝑆 )  ∨  ( 𝑋  ∧  𝑊 ) ) )  | 
						
						
							| 29 | 
							
								1 2 3 4 5 6 7 8 9 10
							 | 
							cdleme48fv | 
							⊢ ( ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( 𝑃  ∈  𝐴  ∧  ¬  𝑃  ≤  𝑊 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 ) )  ∧  ( 𝑃  ≠  𝑄  ∧  ( 𝑋  ∈  𝐵  ∧  ¬  𝑋  ≤  𝑊 ) )  ∧  ( ( 𝑆  ∈  𝐴  ∧  ¬  𝑆  ≤  𝑊 )  ∧  ( 𝑆  ∨  ( 𝑋  ∧  𝑊 ) )  =  𝑋 ) )  →  ( 𝐹 ‘ 𝑋 )  =  ( ( 𝐹 ‘ 𝑆 )  ∨  ( 𝑋  ∧  𝑊 ) ) )  | 
						
						
							| 30 | 
							
								28 29
							 | 
							breqtrrd | 
							⊢ ( ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( 𝑃  ∈  𝐴  ∧  ¬  𝑃  ≤  𝑊 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 ) )  ∧  ( 𝑃  ≠  𝑄  ∧  ( 𝑋  ∈  𝐵  ∧  ¬  𝑋  ≤  𝑊 ) )  ∧  ( ( 𝑆  ∈  𝐴  ∧  ¬  𝑆  ≤  𝑊 )  ∧  ( 𝑆  ∨  ( 𝑋  ∧  𝑊 ) )  =  𝑋 ) )  →  ( 𝐹 ‘ 𝑆 )  ≤  ( 𝐹 ‘ 𝑋 ) )  | 
						
						
							| 31 | 
							
								
							 | 
							vex | 
							⊢ 𝑠  ∈  V  | 
						
						
							| 32 | 
							
								
							 | 
							eqid | 
							⊢ ( ( 𝑠  ∨  𝑈 )  ∧  ( 𝑄  ∨  ( ( 𝑃  ∨  𝑠 )  ∧  𝑊 ) ) )  =  ( ( 𝑠  ∨  𝑈 )  ∧  ( 𝑄  ∨  ( ( 𝑃  ∨  𝑠 )  ∧  𝑊 ) ) )  | 
						
						
							| 33 | 
							
								8 32
							 | 
							cdleme31sc | 
							⊢ ( 𝑠  ∈  V  →  ⦋ 𝑠  /  𝑡 ⦌ 𝐷  =  ( ( 𝑠  ∨  𝑈 )  ∧  ( 𝑄  ∨  ( ( 𝑃  ∨  𝑠 )  ∧  𝑊 ) ) ) )  | 
						
						
							| 34 | 
							
								31 33
							 | 
							ax-mp | 
							⊢ ⦋ 𝑠  /  𝑡 ⦌ 𝐷  =  ( ( 𝑠  ∨  𝑈 )  ∧  ( 𝑄  ∨  ( ( 𝑃  ∨  𝑠 )  ∧  𝑊 ) ) )  | 
						
						
							| 35 | 
							
								
							 | 
							eqid | 
							⊢ ( ℩ 𝑦  ∈  𝐵 ∀ 𝑡  ∈  𝐴 ( ( ¬  𝑡  ≤  𝑊  ∧  ¬  𝑡  ≤  ( 𝑃  ∨  𝑄 ) )  →  𝑦  =  𝐸 ) )  =  ( ℩ 𝑦  ∈  𝐵 ∀ 𝑡  ∈  𝐴 ( ( ¬  𝑡  ≤  𝑊  ∧  ¬  𝑡  ≤  ( 𝑃  ∨  𝑄 ) )  →  𝑦  =  𝐸 ) )  | 
						
						
							| 36 | 
							
								
							 | 
							eqid | 
							⊢ if ( 𝑠  ≤  ( 𝑃  ∨  𝑄 ) ,  ( ℩ 𝑦  ∈  𝐵 ∀ 𝑡  ∈  𝐴 ( ( ¬  𝑡  ≤  𝑊  ∧  ¬  𝑡  ≤  ( 𝑃  ∨  𝑄 ) )  →  𝑦  =  𝐸 ) ) ,  ⦋ 𝑠  /  𝑡 ⦌ 𝐷 )  =  if ( 𝑠  ≤  ( 𝑃  ∨  𝑄 ) ,  ( ℩ 𝑦  ∈  𝐵 ∀ 𝑡  ∈  𝐴 ( ( ¬  𝑡  ≤  𝑊  ∧  ¬  𝑡  ≤  ( 𝑃  ∨  𝑄 ) )  →  𝑦  =  𝐸 ) ) ,  ⦋ 𝑠  /  𝑡 ⦌ 𝐷 )  | 
						
						
							| 37 | 
							
								
							 | 
							eqid | 
							⊢ ( ℩ 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 ) ) ) )  =  ( ℩ 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 ) ) ) )  | 
						
						
							| 38 | 
							
								1 2 3 4 5 6 7 34 8 9 35 36 37 10
							 | 
							cdleme32fvcl | 
							⊢ ( ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( 𝑃  ∈  𝐴  ∧  ¬  𝑃  ≤  𝑊 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 ) )  ∧  𝑋  ∈  𝐵 )  →  ( 𝐹 ‘ 𝑋 )  ∈  𝐵 )  | 
						
						
							| 39 | 
							
								11 21 38
							 | 
							syl2anc | 
							⊢ ( ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( 𝑃  ∈  𝐴  ∧  ¬  𝑃  ≤  𝑊 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 ) )  ∧  ( 𝑃  ≠  𝑄  ∧  ( 𝑋  ∈  𝐵  ∧  ¬  𝑋  ≤  𝑊 ) )  ∧  ( ( 𝑆  ∈  𝐴  ∧  ¬  𝑆  ≤  𝑊 )  ∧  ( 𝑆  ∨  ( 𝑋  ∧  𝑊 ) )  =  𝑋 ) )  →  ( 𝐹 ‘ 𝑋 )  ∈  𝐵 )  | 
						
						
							| 40 | 
							
								1 2
							 | 
							lattr | 
							⊢ ( ( 𝐾  ∈  Lat  ∧  ( ( 𝐹 ‘ 𝑆 )  ∈  𝐵  ∧  ( 𝐹 ‘ 𝑋 )  ∈  𝐵  ∧  𝑊  ∈  𝐵 ) )  →  ( ( ( 𝐹 ‘ 𝑆 )  ≤  ( 𝐹 ‘ 𝑋 )  ∧  ( 𝐹 ‘ 𝑋 )  ≤  𝑊 )  →  ( 𝐹 ‘ 𝑆 )  ≤  𝑊 ) )  | 
						
						
							| 41 | 
							
								17 20 39 24 40
							 | 
							syl13anc | 
							⊢ ( ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( 𝑃  ∈  𝐴  ∧  ¬  𝑃  ≤  𝑊 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 ) )  ∧  ( 𝑃  ≠  𝑄  ∧  ( 𝑋  ∈  𝐵  ∧  ¬  𝑋  ≤  𝑊 ) )  ∧  ( ( 𝑆  ∈  𝐴  ∧  ¬  𝑆  ≤  𝑊 )  ∧  ( 𝑆  ∨  ( 𝑋  ∧  𝑊 ) )  =  𝑋 ) )  →  ( ( ( 𝐹 ‘ 𝑆 )  ≤  ( 𝐹 ‘ 𝑋 )  ∧  ( 𝐹 ‘ 𝑋 )  ≤  𝑊 )  →  ( 𝐹 ‘ 𝑆 )  ≤  𝑊 ) )  | 
						
						
							| 42 | 
							
								30 41
							 | 
							mpand | 
							⊢ ( ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( 𝑃  ∈  𝐴  ∧  ¬  𝑃  ≤  𝑊 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 ) )  ∧  ( 𝑃  ≠  𝑄  ∧  ( 𝑋  ∈  𝐵  ∧  ¬  𝑋  ≤  𝑊 ) )  ∧  ( ( 𝑆  ∈  𝐴  ∧  ¬  𝑆  ≤  𝑊 )  ∧  ( 𝑆  ∨  ( 𝑋  ∧  𝑊 ) )  =  𝑋 ) )  →  ( ( 𝐹 ‘ 𝑋 )  ≤  𝑊  →  ( 𝐹 ‘ 𝑆 )  ≤  𝑊 ) )  | 
						
						
							| 43 | 
							
								15 42
							 | 
							mtod | 
							⊢ ( ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( 𝑃  ∈  𝐴  ∧  ¬  𝑃  ≤  𝑊 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 ) )  ∧  ( 𝑃  ≠  𝑄  ∧  ( 𝑋  ∈  𝐵  ∧  ¬  𝑋  ≤  𝑊 ) )  ∧  ( ( 𝑆  ∈  𝐴  ∧  ¬  𝑆  ≤  𝑊 )  ∧  ( 𝑆  ∨  ( 𝑋  ∧  𝑊 ) )  =  𝑋 ) )  →  ¬  ( 𝐹 ‘ 𝑋 )  ≤  𝑊 )  |