| Step | Hyp | Ref
| Expression |
| 1 | | curfcl.g |
. . . 4
    curryF   |
| 2 | | eqid 2622 |
. . . 4
         |
| 3 | | curfcl.c |
. . . 4
   |
| 4 | | curfcl.d |
. . . 4
   |
| 5 | | curfcl.f |
. . . 4
   c     |
| 6 | | eqid 2622 |
. . . 4
         |
| 7 | | eqid 2622 |
. . . 4
       |
| 8 | | eqid 2622 |
. . . 4
         |
| 9 | | eqid 2622 |
. . . 4
       |
| 10 | | eqid 2622 |
. . . 4
         |
| 11 | 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 | curfval 16863 |
. . 3
                                                                                                                               |
| 12 | | fvex 6201 |
. . . . . . 7
     |
| 13 | 12 | mptex 6486 |
. . . . . 6
                          
                                           |
| 14 | 12, 12 | mpt2ex 7247 |
. . . . . 6
                                                     |
| 15 | 13, 14 | op1std 7178 |
. . . . 5
                            
                                                                                                                                                                           |
| 16 | 11, 15 | syl 17 |
. . . 4
                               
                                            |
| 17 | 13, 14 | op2ndd 7179 |
. . . . 5
                            
                                                                                                         
                                                |
| 18 | 11, 17 | syl 17 |
. . . 4
                                                           |
| 19 | 16, 18 | opeq12d 4410 |
. . 3
                                                                                                                                          |
| 20 | 11, 19 | eqtr4d 2659 |
. 2
              |
| 21 | | curfcl.q |
. . . . 5
 FuncCat
  |
| 22 | 21 | fucbas 16620 |
. . . 4
       |
| 23 | | eqid 2622 |
. . . . 5
 Nat   Nat   |
| 24 | 21, 23 | fuchom 16621 |
. . . 4
 Nat      |
| 25 | | eqid 2622 |
. . . 4
         |
| 26 | | eqid 2622 |
. . . 4
comp  comp   |
| 27 | | eqid 2622 |
. . . 4
comp  comp   |
| 28 | | funcrcl 16523 |
. . . . . . 7
   c  
  c     |
| 29 | 5, 28 | syl 17 |
. . . . . 6
   c 
   |
| 30 | 29 | simprd 479 |
. . . . 5
   |
| 31 | 21, 4, 30 | fuccat 16630 |
. . . 4
   |
| 32 | | opex 4932 |
. . . . . 6
                                                              
 |
| 33 | 32 | a1i 11 |
. . . . 5
 
    
                     
                                        
  |
| 34 | 3 | adantr 481 |
. . . . . 6
 
    
  |
| 35 | 4 | adantr 481 |
. . . . . 6
 
    
  |
| 36 | 5 | adantr 481 |
. . . . . 6
 
    
  c 
   |
| 37 | | simpr 477 |
. . . . . 6
 
    
      |
| 38 | | eqid 2622 |
. . . . . 6
                 |
| 39 | 1, 2, 34, 35, 36, 6, 37, 38 | curf1cl 16868 |
. . . . 5
 
    
        
   |
| 40 | 33, 16, 39 | fmpt2d 6393 |
. . . 4
                 |
| 41 | | eqid 2622 |
. . . . . 6
                                                                                                         |
| 42 | | ovex 6678 |
. . . . . . 7
        |
| 43 | 42 | mptex 6486 |
. . . . . 6
                                          |
| 44 | 41, 43 | fnmpt2i 7239 |
. . . . 5
                                                               |
| 45 | 18 | fneq1d 5981 |
. . . . 5
               
                                                                 |
| 46 | 44, 45 | mpbiri 248 |
. . . 4
                 |
| 47 | | fvex 6201 |
. . . . . . 7
     |
| 48 | 47 | mptex 6486 |
. . . . . 6
                                 |
| 49 | 48 | a1i 11 |
. . . . 5
             
  
                                       |
| 50 | 18 | oveqd 6667 |
. . . . . 6
                                                                   |
| 51 | 41 | ovmpt4g 6783 |
. . . . . . 7
         
                                                                                                                                             |
| 52 | 43, 51 | mp3an3 1413 |
. . . . . 6
                                                                                                              |
| 53 | 50, 52 | sylan9eq 2676 |
. . . . 5
 
    
                                                         |
| 54 | 3 | ad2antrr 762 |
. . . . . 6
             
  
    
  |
| 55 | 4 | ad2antrr 762 |
. . . . . 6
             
  
    
  |
| 56 | 5 | ad2antrr 762 |
. . . . . 6
             
  
    
  c     |
| 57 | | simplrl 800 |
. . . . . 6
             
  
    
      |
| 58 | | simplrr 801 |
. . . . . 6
             
  
           |
| 59 | | simpr 477 |
. . . . . 6
             
  
              |
| 60 | | eqid 2622 |
. . . . . 6
                         |
| 61 | 1, 2, 54, 55, 56, 6, 9, 10, 57, 58, 59, 60, 23 | curf2cl 16871 |
. . . . 5
             
  
                            Nat              |
| 62 | 49, 53, 61 | fmpt2d 6393 |
. . . 4
 
    
                                    Nat              |
| 63 | | eqid 2622 |
. . . . . . . . . 10
 c   c   |
| 64 | 63, 2, 6 | xpcbas 16818 |
. . . . . . . . 9
              c    |
| 65 | | eqid 2622 |
. . . . . . . . 9
    c       c    |
| 66 | | eqid 2622 |
. . . . . . . . 9
         |
| 67 | | relfunc 16522 |
. . . . . . . . . . 11
  c    |
| 68 | | 1st2ndbr 7217 |
. . . . . . . . . . 11
    c  
  c 
 
       c          |
| 69 | 67, 5, 68 | sylancr 695 |
. . . . . . . . . 10
        c          |
| 70 | 69 | ad2antrr 762 |
. . . . . . . . 9
                    c          |
| 71 | | opelxpi 5148 |
. . . . . . . . . 10
                          |
| 72 | 71 | adantll 750 |
. . . . . . . . 9
                            |
| 73 | 64, 65, 66, 70, 72 | funcid 16530 |
. . . . . . . 8
                                   c                               |
| 74 | 3 | ad2antrr 762 |
. . . . . . . . . . 11
               |
| 75 | 4 | ad2antrr 762 |
. . . . . . . . . . 11
               |
| 76 | 37 | adantr 481 |
. . . . . . . . . . 11
                   |
| 77 | | simpr 477 |
. . . . . . . . . . 11
                   |
| 78 | 63, 74, 75, 2, 6, 8,
10, 65, 76, 77 | xpcid 16829 |
. . . . . . . . . 10
                  c                              |
| 79 | 78 | fveq2d 6195 |
. . . . . . . . 9
                                   c                                                 |
| 80 | | df-ov 6653 |
. . . . . . . . 9
                                                                        |
| 81 | 79, 80 | syl6eqr 2674 |
. . . . . . . 8
                                   c                                              |
| 82 | 5 | ad2antrr 762 |
. . . . . . . . . . 11
               c 
   |
| 83 | 1, 2, 74, 75, 82, 6, 76, 38, 77 | curf11 16866 |
. . . . . . . . . 10
                                       |
| 84 | | df-ov 6653 |
. . . . . . . . . 10
                    |
| 85 | 83, 84 | syl6req 2673 |
. . . . . . . . 9
                                          |
| 86 | 85 | fveq2d 6195 |
. . . . . . . 8
                                                          |
| 87 | 73, 81, 86 | 3eqtr3d 2664 |
. . . . . . 7
                                                                         |
| 88 | 87 | mpteq2dva 4744 |
. . . . . 6
 
    
                                                                        |
| 89 | 30 | adantr 481 |
. . . . . . . . 9
 
    
  |
| 90 | | eqid 2622 |
. . . . . . . . . 10
         |
| 91 | 90, 66 | cidfn 16340 |
. . . . . . . . 9
           |
| 92 | 89, 91 | syl 17 |
. . . . . . . 8
 
    
          |
| 93 | | dffn2 6047 |
. . . . . . . 8
                       |
| 94 | 92, 93 | sylib 208 |
. . . . . . 7
 
    
              |
| 95 | | relfunc 16522 |
. . . . . . . . 9
   |
| 96 | | 1st2ndbr 7217 |
. . . . . . . . 9
                                             |
| 97 | 95, 39, 96 | sylancr 695 |
. . . . . . . 8
 
    
                              |
| 98 | 6, 90, 97 | funcf1 16526 |
. . . . . . 7
 
    
                          |
| 99 | | fcompt 6400 |
. . . . . . 7
                                                                                         |
| 100 | 94, 98, 99 | syl2anc 693 |
. . . . . 6
 
    
                                                  |
| 101 | 88, 100 | eqtr4d 2659 |
. . . . 5
 
    
                                                            |
| 102 | 2, 9, 8, 34, 37 | catidcl 16343 |
. . . . . 6
 
    
                 |
| 103 | | eqid 2622 |
. . . . . 6
                                         |
| 104 | 1, 2, 34, 35, 36, 6, 9, 10, 37, 37, 102, 103 | curf2 16869 |
. . . . 5
 
    
                                                              |
| 105 | 21, 25, 66, 39 | fucid 16631 |
. . . . 5
 
    
                                    |
| 106 | 101, 104,
105 | 3eqtr4d 2666 |
. . . 4
 
    
                                      |
| 107 | 3 | 3ad2ant1 1082 |
. . . . . . . . . . . . 13
 
    
   
                     
  |
| 108 | 107 | adantr 481 |
. . . . . . . . . . . 12
           
    
                        |
| 109 | 4 | 3ad2ant1 1082 |
. . . . . . . . . . . . 13
 
    
   
                     
  |
| 110 | 109 | adantr 481 |
. . . . . . . . . . . 12
           
    
                        |
| 111 | 5 | 3ad2ant1 1082 |
. . . . . . . . . . . . 13
 
    
   
                     
  c 
   |
| 112 | 111 | adantr 481 |
. . . . . . . . . . . 12
           
    
                        c 
   |
| 113 | | simp21 1094 |
. . . . . . . . . . . . 13
 
    
   
                     
      |
| 114 | 113 | adantr 481 |
. . . . . . . . . . . 12
           
    
                            |
| 115 | | simpr 477 |
. . . . . . . . . . . 12
           
    
                            |
| 116 | 1, 2, 108, 110, 112, 6, 114, 38, 115 | curf11 16866 |
. . . . . . . . . . 11
           
    
                                                |
| 117 | | df-ov 6653 |
. . . . . . . . . . 11
                    |
| 118 | 116, 117 | syl6eq 2672 |
. . . . . . . . . 10
           
    
                                                   |
| 119 | | simp22 1095 |
. . . . . . . . . . . . 13
 
    
   
                     
      |
| 120 | 119 | adantr 481 |
. . . . . . . . . . . 12
           
    
                            |
| 121 | | eqid 2622 |
. . . . . . . . . . . 12
                 |
| 122 | 1, 2, 108, 110, 112, 6, 120, 121, 115 | curf11 16866 |
. . . . . . . . . . 11
           
    
                                                |
| 123 | | df-ov 6653 |
. . . . . . . . . . 11
                    |
| 124 | 122, 123 | syl6eq 2672 |
. . . . . . . . . 10
           
    
                                                   |
| 125 | 118, 124 | opeq12d 4410 |
. . . . . . . . 9
           
    
                                                                                    |
| 126 | | simp23 1096 |
. . . . . . . . . . . 12
 
    
   
                     
      |
| 127 | 126 | adantr 481 |
. . . . . . . . . . 11
           
    
                            |
| 128 | | eqid 2622 |
. . . . . . . . . . 11
                 |
| 129 | 1, 2, 108, 110, 112, 6, 127, 128, 115 | curf11 16866 |
. . . . . . . . . 10
           
    
                                                |
| 130 | | df-ov 6653 |
. . . . . . . . . 10
                    |
| 131 | 129, 130 | syl6eq 2672 |
. . . . . . . . 9
           
    
                                                   |
| 132 | 125, 131 | oveq12d 6668 |
. . . . . . . 8
           
    
                                                           comp                                               comp                 |
| 133 | | simp3r 1090 |
. . . . . . . . . . 11
 
    
   
                     
         |
| 134 | 133 | adantr 481 |
. . . . . . . . . 10
           
    
                               |
| 135 | | eqid 2622 |
. . . . . . . . . 10
                         |
| 136 | 1, 2, 108, 110, 112, 6, 9, 10, 120, 127, 134, 135, 115 | curf2val 16870 |
. . . . . . . . 9
           
    
                                                                  |
| 137 | | df-ov 6653 |
. . . . . . . . 9
                                                        |
| 138 | 136, 137 | syl6eq 2672 |
. . . . . . . 8
           
    
                                                                     |
| 139 | | simp3l 1089 |
. . . . . . . . . . 11
 
    
   
                     
         |
| 140 | 139 | adantr 481 |
. . . . . . . . . 10
           
    
                               |
| 141 | | eqid 2622 |
. . . . . . . . . 10
                         |
| 142 | 1, 2, 108, 110, 112, 6, 9, 10, 114, 120, 140, 141, 115 | curf2val 16870 |
. . . . . . . . 9
           
    
                                                                  |
| 143 | | df-ov 6653 |
. . . . . . . . 9
                                                        |
| 144 | 142, 143 | syl6eq 2672 |
. . . . . . . 8
           
    
                                                                     |
| 145 | 132, 138,
144 | oveq123d 6671 |
. . . . . . 7
           
    
                                                                             comp                                                                                                comp                                                |
| 146 | | eqid 2622 |
. . . . . . . 8
   c      c    |
| 147 | | eqid 2622 |
. . . . . . . 8
comp 
c
  comp 
c
   |
| 148 | | eqid 2622 |
. . . . . . . 8
comp  comp   |
| 149 | 67, 112, 68 | sylancr 695 |
. . . . . . . 8
           
    
                             c          |
| 150 | | opelxpi 5148 |
. . . . . . . . 9
             
            |
| 151 | 113, 150 | sylan 488 |
. . . . . . . 8
           
    
                        
            |
| 152 | | opelxpi 5148 |
. . . . . . . . 9
             
            |
| 153 | 119, 152 | sylan 488 |
. . . . . . . 8
           
    
                        
            |
| 154 | | opelxpi 5148 |
. . . . . . . . 9
             
            |
| 155 | 126, 154 | sylan 488 |
. . . . . . . 8
           
    
                        
            |
| 156 | 6, 7, 10, 110, 115 | catidcl 16343 |
. . . . . . . . . 10
           
    
                                       |
| 157 | | opelxpi 5148 |
. . . . . . . . . 10
                                                      |
| 158 | 140, 156,
157 | syl2anc 693 |
. . . . . . . . 9
           
    
                                                   |
| 159 | 63, 2, 6, 9, 7, 114, 115, 120, 115, 146 | xpchom2 16826 |
. . . . . . . . 9
           
    
                              c                          |
| 160 | 158, 159 | eleqtrrd 2704 |
. . . . . . . 8
           
    
                                         c          |
| 161 | | opelxpi 5148 |
. . . . . . . . . 10
                                                      |
| 162 | 134, 156,
161 | syl2anc 693 |
. . . . . . . . 9
           
    
                                                   |
| 163 | 63, 2, 6, 9, 7, 120, 115, 127, 115, 146 | xpchom2 16826 |
. . . . . . . . 9
           
    
                              c                          |
| 164 | 162, 163 | eleqtrrd 2704 |
. . . . . . . 8
           
    
                                         c          |
| 165 | 64, 146, 147, 148, 149, 151, 153, 155, 160, 164 | funcco 16531 |
. . . . . . 7
           
    
                                                               comp  c                                                                                comp                                                |
| 166 | | eqid 2622 |
. . . . . . . . . . 11
comp  comp   |
| 167 | 63, 2, 6, 9, 7, 114, 115, 120, 115, 26, 166, 147, 127, 115, 140, 156, 134, 156 | xpcco2 16827 |
. . . . . . . . . 10
           
    
                                              comp  c                             comp                      comp                 |
| 168 | 6, 7, 10, 110, 115, 166, 115, 156 | catlid 16344 |
. . . . . . . . . . 11
           
    
                                     comp                        |
| 169 | 168 | opeq2d 4409 |
. . . . . . . . . 10
           
    
                              comp                      comp                       comp                  |
| 170 | 167, 169 | eqtrd 2656 |
. . . . . . . . 9
           
    
                                              comp  c                             comp                  |
| 171 | 170 | fveq2d 6195 |
. . . . . . . 8
           
    
                                                               comp  c                                               comp                   |
| 172 | | df-ov 6653 |
. . . . . . . 8
        comp                                                        comp                  |
| 173 | 171, 172 | syl6eqr 2674 |
. . . . . . 7
           
    
                                                               comp  c                              comp                                 |
| 174 | 145, 165,
173 | 3eqtr2rd 2663 |
. . . . . 6
           
    
                              comp                                                                                      comp                                        |
| 175 | 174 | mpteq2dva 4744 |
. . . . 5
 
    
   
                     
             comp                                                                                            comp                                         |
| 176 | 2, 9, 26, 107, 113, 119, 126, 139, 133 | catcocl 16346 |
. . . . . 6
 
    
   
                     
       comp               |
| 177 | | eqid 2622 |
. . . . . 6
                  comp                         comp        |
| 178 | 1, 2, 107, 109, 111, 6, 9, 10, 113, 126, 176, 177 | curf2 16869 |
. . . . 5
 
    
   
                     
                  comp                    comp                                  |
| 179 | 1, 2, 107, 109, 111, 6, 9, 10, 113, 119, 139, 141, 23 | curf2cl 16871 |
. . . . . 6
 
    
   
                     
                       Nat              |
| 180 | 1, 2, 107, 109, 111, 6, 9, 10, 119, 126, 133, 135, 23 | curf2cl 16871 |
. . . . . 6
 
    
   
                     
                       Nat              |
| 181 | 21, 23, 6, 148, 27, 179, 180 | fucco 16622 |
. . . . 5
 
    
   
                     
                                   comp                                                                                      comp                                         |
| 182 | 175, 178,
181 | 3eqtr4d 2666 |
. . . 4
 
    
   
                     
                  comp                                          comp                            |
| 183 | 2, 22, 9, 24, 8, 25, 26, 27, 3, 31, 40, 46, 62, 106, 182 | isfuncd 16525 |
. . 3
               |
| 184 | | df-br 4654 |
. . 3
                        
   |
| 185 | 183, 184 | sylib 208 |
. 2
            
   |
| 186 | 20, 185 | eqeltrd 2701 |
1
     |