| Step | Hyp | Ref | Expression | 
						
							| 1 |  | dicvaddcl.l | ⊢  ≤   =  ( le ‘ 𝐾 ) | 
						
							| 2 |  | dicvaddcl.a | ⊢ 𝐴  =  ( Atoms ‘ 𝐾 ) | 
						
							| 3 |  | dicvaddcl.h | ⊢ 𝐻  =  ( LHyp ‘ 𝐾 ) | 
						
							| 4 |  | dicvaddcl.u | ⊢ 𝑈  =  ( ( DVecH ‘ 𝐾 ) ‘ 𝑊 ) | 
						
							| 5 |  | dicvaddcl.i | ⊢ 𝐼  =  ( ( DIsoC ‘ 𝐾 ) ‘ 𝑊 ) | 
						
							| 6 |  | dicvaddcl.p | ⊢  +   =  ( +g ‘ 𝑈 ) | 
						
							| 7 |  | simp1 | ⊢ ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 )  ∧  ( 𝑋  ∈  ( 𝐼 ‘ 𝑄 )  ∧  𝑌  ∈  ( 𝐼 ‘ 𝑄 ) ) )  →  ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 ) ) | 
						
							| 8 |  | eqid | ⊢ ( Base ‘ 𝑈 )  =  ( Base ‘ 𝑈 ) | 
						
							| 9 | 1 2 3 5 4 8 | dicssdvh | ⊢ ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 ) )  →  ( 𝐼 ‘ 𝑄 )  ⊆  ( Base ‘ 𝑈 ) ) | 
						
							| 10 |  | eqid | ⊢ ( ( LTrn ‘ 𝐾 ) ‘ 𝑊 )  =  ( ( LTrn ‘ 𝐾 ) ‘ 𝑊 ) | 
						
							| 11 |  | eqid | ⊢ ( ( TEndo ‘ 𝐾 ) ‘ 𝑊 )  =  ( ( TEndo ‘ 𝐾 ) ‘ 𝑊 ) | 
						
							| 12 | 3 10 11 4 8 | dvhvbase | ⊢ ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  →  ( Base ‘ 𝑈 )  =  ( ( ( LTrn ‘ 𝐾 ) ‘ 𝑊 )  ×  ( ( TEndo ‘ 𝐾 ) ‘ 𝑊 ) ) ) | 
						
							| 13 | 12 | eqcomd | ⊢ ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  →  ( ( ( LTrn ‘ 𝐾 ) ‘ 𝑊 )  ×  ( ( TEndo ‘ 𝐾 ) ‘ 𝑊 ) )  =  ( Base ‘ 𝑈 ) ) | 
						
							| 14 | 13 | adantr | ⊢ ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 ) )  →  ( ( ( LTrn ‘ 𝐾 ) ‘ 𝑊 )  ×  ( ( TEndo ‘ 𝐾 ) ‘ 𝑊 ) )  =  ( Base ‘ 𝑈 ) ) | 
						
							| 15 | 9 14 | sseqtrrd | ⊢ ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 ) )  →  ( 𝐼 ‘ 𝑄 )  ⊆  ( ( ( LTrn ‘ 𝐾 ) ‘ 𝑊 )  ×  ( ( TEndo ‘ 𝐾 ) ‘ 𝑊 ) ) ) | 
						
							| 16 | 15 | 3adant3 | ⊢ ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 )  ∧  ( 𝑋  ∈  ( 𝐼 ‘ 𝑄 )  ∧  𝑌  ∈  ( 𝐼 ‘ 𝑄 ) ) )  →  ( 𝐼 ‘ 𝑄 )  ⊆  ( ( ( LTrn ‘ 𝐾 ) ‘ 𝑊 )  ×  ( ( TEndo ‘ 𝐾 ) ‘ 𝑊 ) ) ) | 
						
							| 17 |  | simp3l | ⊢ ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 )  ∧  ( 𝑋  ∈  ( 𝐼 ‘ 𝑄 )  ∧  𝑌  ∈  ( 𝐼 ‘ 𝑄 ) ) )  →  𝑋  ∈  ( 𝐼 ‘ 𝑄 ) ) | 
						
							| 18 | 16 17 | sseldd | ⊢ ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 )  ∧  ( 𝑋  ∈  ( 𝐼 ‘ 𝑄 )  ∧  𝑌  ∈  ( 𝐼 ‘ 𝑄 ) ) )  →  𝑋  ∈  ( ( ( LTrn ‘ 𝐾 ) ‘ 𝑊 )  ×  ( ( TEndo ‘ 𝐾 ) ‘ 𝑊 ) ) ) | 
						
							| 19 |  | simp3r | ⊢ ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 )  ∧  ( 𝑋  ∈  ( 𝐼 ‘ 𝑄 )  ∧  𝑌  ∈  ( 𝐼 ‘ 𝑄 ) ) )  →  𝑌  ∈  ( 𝐼 ‘ 𝑄 ) ) | 
						
							| 20 | 16 19 | sseldd | ⊢ ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 )  ∧  ( 𝑋  ∈  ( 𝐼 ‘ 𝑄 )  ∧  𝑌  ∈  ( 𝐼 ‘ 𝑄 ) ) )  →  𝑌  ∈  ( ( ( LTrn ‘ 𝐾 ) ‘ 𝑊 )  ×  ( ( TEndo ‘ 𝐾 ) ‘ 𝑊 ) ) ) | 
						
							| 21 |  | eqid | ⊢ ( Scalar ‘ 𝑈 )  =  ( Scalar ‘ 𝑈 ) | 
						
							| 22 |  | eqid | ⊢ ( +g ‘ ( Scalar ‘ 𝑈 ) )  =  ( +g ‘ ( Scalar ‘ 𝑈 ) ) | 
						
							| 23 | 3 10 11 4 21 6 22 | dvhvadd | ⊢ ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( 𝑋  ∈  ( ( ( LTrn ‘ 𝐾 ) ‘ 𝑊 )  ×  ( ( TEndo ‘ 𝐾 ) ‘ 𝑊 ) )  ∧  𝑌  ∈  ( ( ( LTrn ‘ 𝐾 ) ‘ 𝑊 )  ×  ( ( TEndo ‘ 𝐾 ) ‘ 𝑊 ) ) ) )  →  ( 𝑋  +  𝑌 )  =  〈 ( ( 1st  ‘ 𝑋 )  ∘  ( 1st  ‘ 𝑌 ) ) ,  ( ( 2nd  ‘ 𝑋 ) ( +g ‘ ( Scalar ‘ 𝑈 ) ) ( 2nd  ‘ 𝑌 ) ) 〉 ) | 
						
							| 24 | 7 18 20 23 | syl12anc | ⊢ ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 )  ∧  ( 𝑋  ∈  ( 𝐼 ‘ 𝑄 )  ∧  𝑌  ∈  ( 𝐼 ‘ 𝑄 ) ) )  →  ( 𝑋  +  𝑌 )  =  〈 ( ( 1st  ‘ 𝑋 )  ∘  ( 1st  ‘ 𝑌 ) ) ,  ( ( 2nd  ‘ 𝑋 ) ( +g ‘ ( Scalar ‘ 𝑈 ) ) ( 2nd  ‘ 𝑌 ) ) 〉 ) | 
						
							| 25 | 1 2 3 11 5 | dicelval2nd | ⊢ ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 )  ∧  𝑋  ∈  ( 𝐼 ‘ 𝑄 ) )  →  ( 2nd  ‘ 𝑋 )  ∈  ( ( TEndo ‘ 𝐾 ) ‘ 𝑊 ) ) | 
						
							| 26 | 25 | 3adant3r | ⊢ ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 )  ∧  ( 𝑋  ∈  ( 𝐼 ‘ 𝑄 )  ∧  𝑌  ∈  ( 𝐼 ‘ 𝑄 ) ) )  →  ( 2nd  ‘ 𝑋 )  ∈  ( ( TEndo ‘ 𝐾 ) ‘ 𝑊 ) ) | 
						
							| 27 | 1 2 3 11 5 | dicelval2nd | ⊢ ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 )  ∧  𝑌  ∈  ( 𝐼 ‘ 𝑄 ) )  →  ( 2nd  ‘ 𝑌 )  ∈  ( ( TEndo ‘ 𝐾 ) ‘ 𝑊 ) ) | 
						
							| 28 | 27 | 3adant3l | ⊢ ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 )  ∧  ( 𝑋  ∈  ( 𝐼 ‘ 𝑄 )  ∧  𝑌  ∈  ( 𝐼 ‘ 𝑄 ) ) )  →  ( 2nd  ‘ 𝑌 )  ∈  ( ( TEndo ‘ 𝐾 ) ‘ 𝑊 ) ) | 
						
							| 29 |  | eqid | ⊢ ( oc ‘ 𝐾 )  =  ( oc ‘ 𝐾 ) | 
						
							| 30 | 1 29 2 3 | lhpocnel | ⊢ ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  →  ( ( ( oc ‘ 𝐾 ) ‘ 𝑊 )  ∈  𝐴  ∧  ¬  ( ( oc ‘ 𝐾 ) ‘ 𝑊 )  ≤  𝑊 ) ) | 
						
							| 31 | 30 | 3ad2ant1 | ⊢ ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 )  ∧  ( 𝑋  ∈  ( 𝐼 ‘ 𝑄 )  ∧  𝑌  ∈  ( 𝐼 ‘ 𝑄 ) ) )  →  ( ( ( oc ‘ 𝐾 ) ‘ 𝑊 )  ∈  𝐴  ∧  ¬  ( ( oc ‘ 𝐾 ) ‘ 𝑊 )  ≤  𝑊 ) ) | 
						
							| 32 |  | simp2 | ⊢ ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 )  ∧  ( 𝑋  ∈  ( 𝐼 ‘ 𝑄 )  ∧  𝑌  ∈  ( 𝐼 ‘ 𝑄 ) ) )  →  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 ) ) | 
						
							| 33 |  | eqid | ⊢ ( ℩ 𝑔  ∈  ( ( LTrn ‘ 𝐾 ) ‘ 𝑊 ) ( 𝑔 ‘ ( ( oc ‘ 𝐾 ) ‘ 𝑊 ) )  =  𝑄 )  =  ( ℩ 𝑔  ∈  ( ( LTrn ‘ 𝐾 ) ‘ 𝑊 ) ( 𝑔 ‘ ( ( oc ‘ 𝐾 ) ‘ 𝑊 ) )  =  𝑄 ) | 
						
							| 34 | 1 2 3 10 33 | ltrniotacl | ⊢ ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( ( ( oc ‘ 𝐾 ) ‘ 𝑊 )  ∈  𝐴  ∧  ¬  ( ( oc ‘ 𝐾 ) ‘ 𝑊 )  ≤  𝑊 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 ) )  →  ( ℩ 𝑔  ∈  ( ( LTrn ‘ 𝐾 ) ‘ 𝑊 ) ( 𝑔 ‘ ( ( oc ‘ 𝐾 ) ‘ 𝑊 ) )  =  𝑄 )  ∈  ( ( LTrn ‘ 𝐾 ) ‘ 𝑊 ) ) | 
						
							| 35 | 7 31 32 34 | syl3anc | ⊢ ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 )  ∧  ( 𝑋  ∈  ( 𝐼 ‘ 𝑄 )  ∧  𝑌  ∈  ( 𝐼 ‘ 𝑄 ) ) )  →  ( ℩ 𝑔  ∈  ( ( LTrn ‘ 𝐾 ) ‘ 𝑊 ) ( 𝑔 ‘ ( ( oc ‘ 𝐾 ) ‘ 𝑊 ) )  =  𝑄 )  ∈  ( ( LTrn ‘ 𝐾 ) ‘ 𝑊 ) ) | 
						
							| 36 |  | eqid | ⊢ ( 𝑠  ∈  ( ( TEndo ‘ 𝐾 ) ‘ 𝑊 ) ,  𝑡  ∈  ( ( TEndo ‘ 𝐾 ) ‘ 𝑊 )  ↦  ( ℎ  ∈  ( ( LTrn ‘ 𝐾 ) ‘ 𝑊 )  ↦  ( ( 𝑠 ‘ ℎ )  ∘  ( 𝑡 ‘ ℎ ) ) ) )  =  ( 𝑠  ∈  ( ( TEndo ‘ 𝐾 ) ‘ 𝑊 ) ,  𝑡  ∈  ( ( TEndo ‘ 𝐾 ) ‘ 𝑊 )  ↦  ( ℎ  ∈  ( ( LTrn ‘ 𝐾 ) ‘ 𝑊 )  ↦  ( ( 𝑠 ‘ ℎ )  ∘  ( 𝑡 ‘ ℎ ) ) ) ) | 
						
							| 37 | 10 36 | tendospdi2 | ⊢ ( ( ( 2nd  ‘ 𝑋 )  ∈  ( ( TEndo ‘ 𝐾 ) ‘ 𝑊 )  ∧  ( 2nd  ‘ 𝑌 )  ∈  ( ( TEndo ‘ 𝐾 ) ‘ 𝑊 )  ∧  ( ℩ 𝑔  ∈  ( ( LTrn ‘ 𝐾 ) ‘ 𝑊 ) ( 𝑔 ‘ ( ( oc ‘ 𝐾 ) ‘ 𝑊 ) )  =  𝑄 )  ∈  ( ( LTrn ‘ 𝐾 ) ‘ 𝑊 ) )  →  ( ( ( 2nd  ‘ 𝑋 ) ( 𝑠  ∈  ( ( TEndo ‘ 𝐾 ) ‘ 𝑊 ) ,  𝑡  ∈  ( ( TEndo ‘ 𝐾 ) ‘ 𝑊 )  ↦  ( ℎ  ∈  ( ( LTrn ‘ 𝐾 ) ‘ 𝑊 )  ↦  ( ( 𝑠 ‘ ℎ )  ∘  ( 𝑡 ‘ ℎ ) ) ) ) ( 2nd  ‘ 𝑌 ) ) ‘ ( ℩ 𝑔  ∈  ( ( LTrn ‘ 𝐾 ) ‘ 𝑊 ) ( 𝑔 ‘ ( ( oc ‘ 𝐾 ) ‘ 𝑊 ) )  =  𝑄 ) )  =  ( ( ( 2nd  ‘ 𝑋 ) ‘ ( ℩ 𝑔  ∈  ( ( LTrn ‘ 𝐾 ) ‘ 𝑊 ) ( 𝑔 ‘ ( ( oc ‘ 𝐾 ) ‘ 𝑊 ) )  =  𝑄 ) )  ∘  ( ( 2nd  ‘ 𝑌 ) ‘ ( ℩ 𝑔  ∈  ( ( LTrn ‘ 𝐾 ) ‘ 𝑊 ) ( 𝑔 ‘ ( ( oc ‘ 𝐾 ) ‘ 𝑊 ) )  =  𝑄 ) ) ) ) | 
						
							| 38 | 26 28 35 37 | syl3anc | ⊢ ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 )  ∧  ( 𝑋  ∈  ( 𝐼 ‘ 𝑄 )  ∧  𝑌  ∈  ( 𝐼 ‘ 𝑄 ) ) )  →  ( ( ( 2nd  ‘ 𝑋 ) ( 𝑠  ∈  ( ( TEndo ‘ 𝐾 ) ‘ 𝑊 ) ,  𝑡  ∈  ( ( TEndo ‘ 𝐾 ) ‘ 𝑊 )  ↦  ( ℎ  ∈  ( ( LTrn ‘ 𝐾 ) ‘ 𝑊 )  ↦  ( ( 𝑠 ‘ ℎ )  ∘  ( 𝑡 ‘ ℎ ) ) ) ) ( 2nd  ‘ 𝑌 ) ) ‘ ( ℩ 𝑔  ∈  ( ( LTrn ‘ 𝐾 ) ‘ 𝑊 ) ( 𝑔 ‘ ( ( oc ‘ 𝐾 ) ‘ 𝑊 ) )  =  𝑄 ) )  =  ( ( ( 2nd  ‘ 𝑋 ) ‘ ( ℩ 𝑔  ∈  ( ( LTrn ‘ 𝐾 ) ‘ 𝑊 ) ( 𝑔 ‘ ( ( oc ‘ 𝐾 ) ‘ 𝑊 ) )  =  𝑄 ) )  ∘  ( ( 2nd  ‘ 𝑌 ) ‘ ( ℩ 𝑔  ∈  ( ( LTrn ‘ 𝐾 ) ‘ 𝑊 ) ( 𝑔 ‘ ( ( oc ‘ 𝐾 ) ‘ 𝑊 ) )  =  𝑄 ) ) ) ) | 
						
							| 39 | 3 10 11 4 21 36 22 | dvhfplusr | ⊢ ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  →  ( +g ‘ ( Scalar ‘ 𝑈 ) )  =  ( 𝑠  ∈  ( ( TEndo ‘ 𝐾 ) ‘ 𝑊 ) ,  𝑡  ∈  ( ( TEndo ‘ 𝐾 ) ‘ 𝑊 )  ↦  ( ℎ  ∈  ( ( LTrn ‘ 𝐾 ) ‘ 𝑊 )  ↦  ( ( 𝑠 ‘ ℎ )  ∘  ( 𝑡 ‘ ℎ ) ) ) ) ) | 
						
							| 40 | 39 | 3ad2ant1 | ⊢ ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 )  ∧  ( 𝑋  ∈  ( 𝐼 ‘ 𝑄 )  ∧  𝑌  ∈  ( 𝐼 ‘ 𝑄 ) ) )  →  ( +g ‘ ( Scalar ‘ 𝑈 ) )  =  ( 𝑠  ∈  ( ( TEndo ‘ 𝐾 ) ‘ 𝑊 ) ,  𝑡  ∈  ( ( TEndo ‘ 𝐾 ) ‘ 𝑊 )  ↦  ( ℎ  ∈  ( ( LTrn ‘ 𝐾 ) ‘ 𝑊 )  ↦  ( ( 𝑠 ‘ ℎ )  ∘  ( 𝑡 ‘ ℎ ) ) ) ) ) | 
						
							| 41 | 40 | oveqd | ⊢ ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 )  ∧  ( 𝑋  ∈  ( 𝐼 ‘ 𝑄 )  ∧  𝑌  ∈  ( 𝐼 ‘ 𝑄 ) ) )  →  ( ( 2nd  ‘ 𝑋 ) ( +g ‘ ( Scalar ‘ 𝑈 ) ) ( 2nd  ‘ 𝑌 ) )  =  ( ( 2nd  ‘ 𝑋 ) ( 𝑠  ∈  ( ( TEndo ‘ 𝐾 ) ‘ 𝑊 ) ,  𝑡  ∈  ( ( TEndo ‘ 𝐾 ) ‘ 𝑊 )  ↦  ( ℎ  ∈  ( ( LTrn ‘ 𝐾 ) ‘ 𝑊 )  ↦  ( ( 𝑠 ‘ ℎ )  ∘  ( 𝑡 ‘ ℎ ) ) ) ) ( 2nd  ‘ 𝑌 ) ) ) | 
						
							| 42 | 41 | fveq1d | ⊢ ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 )  ∧  ( 𝑋  ∈  ( 𝐼 ‘ 𝑄 )  ∧  𝑌  ∈  ( 𝐼 ‘ 𝑄 ) ) )  →  ( ( ( 2nd  ‘ 𝑋 ) ( +g ‘ ( Scalar ‘ 𝑈 ) ) ( 2nd  ‘ 𝑌 ) ) ‘ ( ℩ 𝑔  ∈  ( ( LTrn ‘ 𝐾 ) ‘ 𝑊 ) ( 𝑔 ‘ ( ( oc ‘ 𝐾 ) ‘ 𝑊 ) )  =  𝑄 ) )  =  ( ( ( 2nd  ‘ 𝑋 ) ( 𝑠  ∈  ( ( TEndo ‘ 𝐾 ) ‘ 𝑊 ) ,  𝑡  ∈  ( ( TEndo ‘ 𝐾 ) ‘ 𝑊 )  ↦  ( ℎ  ∈  ( ( LTrn ‘ 𝐾 ) ‘ 𝑊 )  ↦  ( ( 𝑠 ‘ ℎ )  ∘  ( 𝑡 ‘ ℎ ) ) ) ) ( 2nd  ‘ 𝑌 ) ) ‘ ( ℩ 𝑔  ∈  ( ( LTrn ‘ 𝐾 ) ‘ 𝑊 ) ( 𝑔 ‘ ( ( oc ‘ 𝐾 ) ‘ 𝑊 ) )  =  𝑄 ) ) ) | 
						
							| 43 |  | eqid | ⊢ ( ( oc ‘ 𝐾 ) ‘ 𝑊 )  =  ( ( oc ‘ 𝐾 ) ‘ 𝑊 ) | 
						
							| 44 | 1 2 3 43 10 5 | dicelval1sta | ⊢ ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 )  ∧  𝑋  ∈  ( 𝐼 ‘ 𝑄 ) )  →  ( 1st  ‘ 𝑋 )  =  ( ( 2nd  ‘ 𝑋 ) ‘ ( ℩ 𝑔  ∈  ( ( LTrn ‘ 𝐾 ) ‘ 𝑊 ) ( 𝑔 ‘ ( ( oc ‘ 𝐾 ) ‘ 𝑊 ) )  =  𝑄 ) ) ) | 
						
							| 45 | 44 | 3adant3r | ⊢ ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 )  ∧  ( 𝑋  ∈  ( 𝐼 ‘ 𝑄 )  ∧  𝑌  ∈  ( 𝐼 ‘ 𝑄 ) ) )  →  ( 1st  ‘ 𝑋 )  =  ( ( 2nd  ‘ 𝑋 ) ‘ ( ℩ 𝑔  ∈  ( ( LTrn ‘ 𝐾 ) ‘ 𝑊 ) ( 𝑔 ‘ ( ( oc ‘ 𝐾 ) ‘ 𝑊 ) )  =  𝑄 ) ) ) | 
						
							| 46 | 1 2 3 43 10 5 | dicelval1sta | ⊢ ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 )  ∧  𝑌  ∈  ( 𝐼 ‘ 𝑄 ) )  →  ( 1st  ‘ 𝑌 )  =  ( ( 2nd  ‘ 𝑌 ) ‘ ( ℩ 𝑔  ∈  ( ( LTrn ‘ 𝐾 ) ‘ 𝑊 ) ( 𝑔 ‘ ( ( oc ‘ 𝐾 ) ‘ 𝑊 ) )  =  𝑄 ) ) ) | 
						
							| 47 | 46 | 3adant3l | ⊢ ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 )  ∧  ( 𝑋  ∈  ( 𝐼 ‘ 𝑄 )  ∧  𝑌  ∈  ( 𝐼 ‘ 𝑄 ) ) )  →  ( 1st  ‘ 𝑌 )  =  ( ( 2nd  ‘ 𝑌 ) ‘ ( ℩ 𝑔  ∈  ( ( LTrn ‘ 𝐾 ) ‘ 𝑊 ) ( 𝑔 ‘ ( ( oc ‘ 𝐾 ) ‘ 𝑊 ) )  =  𝑄 ) ) ) | 
						
							| 48 | 45 47 | coeq12d | ⊢ ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 )  ∧  ( 𝑋  ∈  ( 𝐼 ‘ 𝑄 )  ∧  𝑌  ∈  ( 𝐼 ‘ 𝑄 ) ) )  →  ( ( 1st  ‘ 𝑋 )  ∘  ( 1st  ‘ 𝑌 ) )  =  ( ( ( 2nd  ‘ 𝑋 ) ‘ ( ℩ 𝑔  ∈  ( ( LTrn ‘ 𝐾 ) ‘ 𝑊 ) ( 𝑔 ‘ ( ( oc ‘ 𝐾 ) ‘ 𝑊 ) )  =  𝑄 ) )  ∘  ( ( 2nd  ‘ 𝑌 ) ‘ ( ℩ 𝑔  ∈  ( ( LTrn ‘ 𝐾 ) ‘ 𝑊 ) ( 𝑔 ‘ ( ( oc ‘ 𝐾 ) ‘ 𝑊 ) )  =  𝑄 ) ) ) ) | 
						
							| 49 | 38 42 48 | 3eqtr4rd | ⊢ ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 )  ∧  ( 𝑋  ∈  ( 𝐼 ‘ 𝑄 )  ∧  𝑌  ∈  ( 𝐼 ‘ 𝑄 ) ) )  →  ( ( 1st  ‘ 𝑋 )  ∘  ( 1st  ‘ 𝑌 ) )  =  ( ( ( 2nd  ‘ 𝑋 ) ( +g ‘ ( Scalar ‘ 𝑈 ) ) ( 2nd  ‘ 𝑌 ) ) ‘ ( ℩ 𝑔  ∈  ( ( LTrn ‘ 𝐾 ) ‘ 𝑊 ) ( 𝑔 ‘ ( ( oc ‘ 𝐾 ) ‘ 𝑊 ) )  =  𝑄 ) ) ) | 
						
							| 50 | 3 10 11 36 | tendoplcl | ⊢ ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( 2nd  ‘ 𝑋 )  ∈  ( ( TEndo ‘ 𝐾 ) ‘ 𝑊 )  ∧  ( 2nd  ‘ 𝑌 )  ∈  ( ( TEndo ‘ 𝐾 ) ‘ 𝑊 ) )  →  ( ( 2nd  ‘ 𝑋 ) ( 𝑠  ∈  ( ( TEndo ‘ 𝐾 ) ‘ 𝑊 ) ,  𝑡  ∈  ( ( TEndo ‘ 𝐾 ) ‘ 𝑊 )  ↦  ( ℎ  ∈  ( ( LTrn ‘ 𝐾 ) ‘ 𝑊 )  ↦  ( ( 𝑠 ‘ ℎ )  ∘  ( 𝑡 ‘ ℎ ) ) ) ) ( 2nd  ‘ 𝑌 ) )  ∈  ( ( TEndo ‘ 𝐾 ) ‘ 𝑊 ) ) | 
						
							| 51 | 7 26 28 50 | syl3anc | ⊢ ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 )  ∧  ( 𝑋  ∈  ( 𝐼 ‘ 𝑄 )  ∧  𝑌  ∈  ( 𝐼 ‘ 𝑄 ) ) )  →  ( ( 2nd  ‘ 𝑋 ) ( 𝑠  ∈  ( ( TEndo ‘ 𝐾 ) ‘ 𝑊 ) ,  𝑡  ∈  ( ( TEndo ‘ 𝐾 ) ‘ 𝑊 )  ↦  ( ℎ  ∈  ( ( LTrn ‘ 𝐾 ) ‘ 𝑊 )  ↦  ( ( 𝑠 ‘ ℎ )  ∘  ( 𝑡 ‘ ℎ ) ) ) ) ( 2nd  ‘ 𝑌 ) )  ∈  ( ( TEndo ‘ 𝐾 ) ‘ 𝑊 ) ) | 
						
							| 52 | 41 51 | eqeltrd | ⊢ ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 )  ∧  ( 𝑋  ∈  ( 𝐼 ‘ 𝑄 )  ∧  𝑌  ∈  ( 𝐼 ‘ 𝑄 ) ) )  →  ( ( 2nd  ‘ 𝑋 ) ( +g ‘ ( Scalar ‘ 𝑈 ) ) ( 2nd  ‘ 𝑌 ) )  ∈  ( ( TEndo ‘ 𝐾 ) ‘ 𝑊 ) ) | 
						
							| 53 |  | fvex | ⊢ ( 1st  ‘ 𝑋 )  ∈  V | 
						
							| 54 |  | fvex | ⊢ ( 1st  ‘ 𝑌 )  ∈  V | 
						
							| 55 | 53 54 | coex | ⊢ ( ( 1st  ‘ 𝑋 )  ∘  ( 1st  ‘ 𝑌 ) )  ∈  V | 
						
							| 56 |  | ovex | ⊢ ( ( 2nd  ‘ 𝑋 ) ( +g ‘ ( Scalar ‘ 𝑈 ) ) ( 2nd  ‘ 𝑌 ) )  ∈  V | 
						
							| 57 | 1 2 3 43 10 11 5 55 56 | dicopelval | ⊢ ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 ) )  →  ( 〈 ( ( 1st  ‘ 𝑋 )  ∘  ( 1st  ‘ 𝑌 ) ) ,  ( ( 2nd  ‘ 𝑋 ) ( +g ‘ ( Scalar ‘ 𝑈 ) ) ( 2nd  ‘ 𝑌 ) ) 〉  ∈  ( 𝐼 ‘ 𝑄 )  ↔  ( ( ( 1st  ‘ 𝑋 )  ∘  ( 1st  ‘ 𝑌 ) )  =  ( ( ( 2nd  ‘ 𝑋 ) ( +g ‘ ( Scalar ‘ 𝑈 ) ) ( 2nd  ‘ 𝑌 ) ) ‘ ( ℩ 𝑔  ∈  ( ( LTrn ‘ 𝐾 ) ‘ 𝑊 ) ( 𝑔 ‘ ( ( oc ‘ 𝐾 ) ‘ 𝑊 ) )  =  𝑄 ) )  ∧  ( ( 2nd  ‘ 𝑋 ) ( +g ‘ ( Scalar ‘ 𝑈 ) ) ( 2nd  ‘ 𝑌 ) )  ∈  ( ( TEndo ‘ 𝐾 ) ‘ 𝑊 ) ) ) ) | 
						
							| 58 | 57 | 3adant3 | ⊢ ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 )  ∧  ( 𝑋  ∈  ( 𝐼 ‘ 𝑄 )  ∧  𝑌  ∈  ( 𝐼 ‘ 𝑄 ) ) )  →  ( 〈 ( ( 1st  ‘ 𝑋 )  ∘  ( 1st  ‘ 𝑌 ) ) ,  ( ( 2nd  ‘ 𝑋 ) ( +g ‘ ( Scalar ‘ 𝑈 ) ) ( 2nd  ‘ 𝑌 ) ) 〉  ∈  ( 𝐼 ‘ 𝑄 )  ↔  ( ( ( 1st  ‘ 𝑋 )  ∘  ( 1st  ‘ 𝑌 ) )  =  ( ( ( 2nd  ‘ 𝑋 ) ( +g ‘ ( Scalar ‘ 𝑈 ) ) ( 2nd  ‘ 𝑌 ) ) ‘ ( ℩ 𝑔  ∈  ( ( LTrn ‘ 𝐾 ) ‘ 𝑊 ) ( 𝑔 ‘ ( ( oc ‘ 𝐾 ) ‘ 𝑊 ) )  =  𝑄 ) )  ∧  ( ( 2nd  ‘ 𝑋 ) ( +g ‘ ( Scalar ‘ 𝑈 ) ) ( 2nd  ‘ 𝑌 ) )  ∈  ( ( TEndo ‘ 𝐾 ) ‘ 𝑊 ) ) ) ) | 
						
							| 59 | 49 52 58 | mpbir2and | ⊢ ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 )  ∧  ( 𝑋  ∈  ( 𝐼 ‘ 𝑄 )  ∧  𝑌  ∈  ( 𝐼 ‘ 𝑄 ) ) )  →  〈 ( ( 1st  ‘ 𝑋 )  ∘  ( 1st  ‘ 𝑌 ) ) ,  ( ( 2nd  ‘ 𝑋 ) ( +g ‘ ( Scalar ‘ 𝑈 ) ) ( 2nd  ‘ 𝑌 ) ) 〉  ∈  ( 𝐼 ‘ 𝑄 ) ) | 
						
							| 60 | 24 59 | eqeltrd | ⊢ ( ( ( 𝐾  ∈  HL  ∧  𝑊  ∈  𝐻 )  ∧  ( 𝑄  ∈  𝐴  ∧  ¬  𝑄  ≤  𝑊 )  ∧  ( 𝑋  ∈  ( 𝐼 ‘ 𝑄 )  ∧  𝑌  ∈  ( 𝐼 ‘ 𝑄 ) ) )  →  ( 𝑋  +  𝑌 )  ∈  ( 𝐼 ‘ 𝑄 ) ) |