Proof of Theorem igenval
| Step | Hyp | Ref
| Expression |
| 1 | | simpl 346 |
. . 3
  Ring  Ring |
| 2 | | igenval.2 |
. . . . . 6
 |
| 3 | | igenval.1 |
. . . . . . . 8
     |
| 4 | | fvex 4689 |
. . . . . . . 8
     |
| 5 | 3, 4 | eqeltri 1967 |
. . . . . . 7
 |
| 6 | 5 | rnex 4209 |
. . . . . 6
 |
| 7 | 2, 6 | eqeltri 1967 |
. . . . 5
 |
| 8 | 7 | ssex 3455 |
. . . 4
   |
| 9 | 8 | adantl 424 |
. . 3
  Ring    |
| 10 | | sseq2 2639 |
. . . . . . 7
     |
| 11 | 10 | rcla4ev 2381 |
. . . . . 6
  Idl    Idl     |
| 12 | 3, 2 | rngidl 16172 |
. . . . . 6

Ring Idl    |
| 13 | 11, 12 | sylan 497 |
. . . . 5
  Ring   Idl     |
| 14 | | rabn0 2893 |
. . . . 5
  Idl  
 Idl     |
| 15 | 13, 14 | sylibr 217 |
. . . 4
  Ring   Idl     |
| 16 | | intex 3465 |
. . . 4
  Idl  
  Idl 

  |
| 17 | 15, 16 | sylib 215 |
. . 3
  Ring    Idl     |
| 18 | 1, 9, 17 | 3jca 1050 |
. 2
  Ring   Ring
  Idl      |
| 19 | | eleq1 1957 |
. . . . . . 7
  Ring Ring  |
| 20 | | fveq2 4681 |
. . . . . . . . . . . 12
           |
| 21 | 20, 3 | syl6eqr 1946 |
. . . . . . . . . . 11
       |
| 22 | 21 | rneqd 4188 |
. . . . . . . . . 10
       |
| 23 | 22, 2 | syl6eqr 1946 |
. . . . . . . . 9
       |
| 24 | | pweq 3036 |
. . . . . . . . 9
             |
| 25 | 23, 24 | syl 12 |
. . . . . . . 8
 
       |
| 26 | 25 | eleq2d 1964 |
. . . . . . 7
           |
| 27 | 19, 26 | anbi12d 690 |
. . . . . 6
   Ring        Ring      |
| 28 | | fveq2 4681 |
. . . . . . . . 9
 Idl  Idl    |
| 29 | | rabeq 2289 |
. . . . . . . . 9
 Idl  Idl 
 Idl    Idl 
   |
| 30 | 28, 29 | syl 12 |
. . . . . . . 8
  Idl    Idl     |
| 31 | 30 | inteqd 3219 |
. . . . . . 7
   Idl     Idl 
   |
| 32 | 31 | eqeq2d 1895 |
. . . . . 6
    Idl     Idl      |
| 33 | 27, 32 | anbi12d 690 |
. . . . 5
    Ring

       Idl      Ring     Idl       |
| 34 | | eleq1 1957 |
. . . . . . 7
       |
| 35 | 34 | anbi2d 678 |
. . . . . 6
   Ring    Ring
     |
| 36 | | sseq1 2637 |
. . . . . . . . 9
     |
| 37 | 36 | rabbidv 2287 |
. . . . . . . 8
  Idl    Idl     |
| 38 | 37 | inteqd 3219 |
. . . . . . 7
   Idl     Idl 
   |
| 39 | 38 | eqeq2d 1895 |
. . . . . 6
    Idl     Idl      |
| 40 | 35, 39 | anbi12d 690 |
. . . . 5
    Ring
    Idl      Ring
    Idl       |
| 41 | | simpl 346 |
. . . . . 6
   Ring
    Idl    
Ring     |
| 42 | | pm3.21 306 |
. . . . . 6
   Idl     Ring
    Ring
 
  Idl       |
| 43 | 41, 42 | impbid2 576 |
. . . . 5
   Idl      Ring
    Idl     Ring
     |
| 44 | | moeq 2431 |
. . . . . 6
   Idl    |
| 45 | 44 | moani 1820 |
. . . . 5
    Ring         Idl     |
| 46 | | df-igen 16208 |
. . . . 5
IdlGen          Ring

       Idl      |
| 47 | 33, 40, 43, 45, 46 | oprabvaligg 10154 |
. . . 4
  Ring
  Idl      Ring
   IdlGen    Idl      |
| 48 | 47 | com12 14 |
. . 3
  Ring
 
  Ring
  Idl     IdlGen    Idl      |
| 49 | 7 | elpw2 3464 |
. . 3

   |
| 50 | 48, 49 | sylan2br 502 |
. 2
  Ring    Ring
  Idl  
  IdlGen    Idl 
    |
| 51 | 18, 50 | mpd 29 |
1
  Ring   IdlGen    Idl 
   |