| Step | Hyp | Ref
| Expression |
| 1 | | nmembers1lem1 6269 |
. 2
  Nn 1c c c   Tc Tc
  |
| 2 | | breq2 4644 |
. . . . 5
 0c  c c 0c  |
| 3 | 2 | anbi2d 684 |
. . . 4
 0c  1c c c  1c c c 0c   |
| 4 | 3 | rabbidv 2852 |
. . 3
 0c  Nn 1c c c   
Nn 1c c c 0c   |
| 5 | | tceq 6159 |
. . . 4
 0c Tc Tc
0c |
| 6 | | tceq 6159 |
. . . 4
Tc
Tc 0c Tc Tc
Tc Tc
0c |
| 7 | 5, 6 | syl 15 |
. . 3
 0c Tc Tc
Tc Tc 0c |
| 8 | 4, 7 | eleq12d 2421 |
. 2
 0c   Nn 1c c
c   Tc Tc
 Nn 1c c c
0c Tc Tc
0c  |
| 9 | | breq2 4644 |
. . . . 5
  c c    |
| 10 | 9 | anbi2d 684 |
. . . 4
  1c c c  1c c c     |
| 11 | 10 | rabbidv 2852 |
. . 3
 
Nn 1c c c   
Nn 1c c c     |
| 12 | | tceq 6159 |
. . . 4
 Tc
Tc   |
| 13 | | tceq 6159 |
. . . 4
Tc
Tc Tc Tc
Tc Tc   |
| 14 | 12, 13 | syl 15 |
. . 3
 Tc Tc
Tc Tc
  |
| 15 | 11, 14 | eleq12d 2421 |
. 2
  
Nn 1c c c   Tc Tc
 Nn 1c c c   Tc Tc
   |
| 16 | | breq2 4644 |
. . . . 5
  1c  c c 
1c   |
| 17 | 16 | anbi2d 684 |
. . . 4
  1c  1c c c  1c c c 
1c    |
| 18 | 17 | rabbidv 2852 |
. . 3
  1c  Nn 1c c c   
Nn 1c c c 
1c    |
| 19 | | tceq 6159 |
. . . 4
  1c Tc Tc  1c  |
| 20 | | tceq 6159 |
. . . 4
Tc
Tc 
1c
Tc Tc
Tc Tc
 1c  |
| 21 | 19, 20 | syl 15 |
. . 3
  1c Tc Tc
Tc Tc 
1c  |
| 22 | 18, 21 | eleq12d 2421 |
. 2
  1c   Nn 1c c
c   Tc Tc
 Nn 1c c c  1c  Tc Tc
 1c   |
| 23 | | breq2 4644 |
. . . . 5
  c c    |
| 24 | 23 | anbi2d 684 |
. . . 4
  1c c c  1c c c     |
| 25 | 24 | rabbidv 2852 |
. . 3
 
Nn 1c c c   
Nn 1c c c     |
| 26 | | tceq 6159 |
. . . 4
 Tc
Tc   |
| 27 | | tceq 6159 |
. . . 4
Tc
Tc Tc Tc
Tc Tc   |
| 28 | 26, 27 | syl 15 |
. . 3
 Tc Tc
Tc Tc
  |
| 29 | 25, 28 | eleq12d 2421 |
. 2
  
Nn 1c c c   Tc Tc
 Nn 1c c c   Tc Tc
   |
| 30 | | nmembers1lem2 6270 |
. . 3
 Nn 1c c c
0c
0c |
| 31 | | tc0c 6164 |
. . . . 5
Tc 0c 0c |
| 32 | | tceq 6159 |
. . . . 5
Tc 0c 0c Tc Tc
0c
Tc 0c |
| 33 | 31, 32 | ax-mp 5 |
. . . 4
Tc Tc
0c
Tc 0c |
| 34 | 33, 31 | eqtri 2373 |
. . 3
Tc Tc
0c
0c |
| 35 | 30, 34 | eleqtrri 2426 |
. 2
 Nn 1c c c
0c Tc Tc
0c |
| 36 | | nntccl 6171 |
. . . 4
 Nn Tc Nn  |
| 37 | | nntccl 6171 |
. . . 4
Tc
Nn Tc Tc
Nn  |
| 38 | 36, 37 | syl 15 |
. . 3
 Nn Tc Tc
Nn  |
| 39 | | nmembers1lem3 6271 |
. . . 4
  Nn Tc Tc
Nn  
Nn 1c c c   Tc Tc
 Nn 1c c c 
1c  Tc Tc 1c   |
| 40 | | nnnc 6147 |
. . . . . . 7
 Nn NC  |
| 41 | | 1cnc 6140 |
. . . . . . . . . . 11
1c
NC |
| 42 | | tcdi 6165 |
. . . . . . . . . . 11
  NC 1c NC Tc 
1c
Tc Tc 1c  |
| 43 | 41, 42 | mpan2 652 |
. . . . . . . . . 10
 NC Tc  1c
Tc Tc 1c  |
| 44 | | tc1c 6166 |
. . . . . . . . . . 11
Tc 1c 1c |
| 45 | 44 | addceq2i 4388 |
. . . . . . . . . 10
Tc Tc 1c Tc 1c |
| 46 | 43, 45 | syl6eq 2401 |
. . . . . . . . 9
 NC Tc  1c
Tc 1c  |
| 47 | | tceq 6159 |
. . . . . . . . 9
Tc 
1c
Tc 1c Tc Tc
 1c
Tc Tc 1c  |
| 48 | 46, 47 | syl 15 |
. . . . . . . 8
 NC Tc Tc 
1c
Tc Tc 1c  |
| 49 | | tccl 6161 |
. . . . . . . . . 10
 NC Tc NC  |
| 50 | | tcdi 6165 |
. . . . . . . . . . 11
 Tc NC 1c
NC Tc Tc 1c
Tc Tc Tc 1c  |
| 51 | 41, 50 | mpan2 652 |
. . . . . . . . . 10
Tc
NC Tc Tc 1c Tc Tc
Tc 1c  |
| 52 | 49, 51 | syl 15 |
. . . . . . . . 9
 NC Tc Tc 1c Tc Tc
Tc 1c  |
| 53 | 44 | addceq2i 4388 |
. . . . . . . . 9
Tc Tc
Tc 1c
Tc Tc 1c |
| 54 | 52, 53 | syl6eq 2401 |
. . . . . . . 8
 NC Tc Tc 1c Tc Tc
1c  |
| 55 | 48, 54 | eqtrd 2385 |
. . . . . . 7
 NC Tc Tc 
1c
Tc Tc
1c  |
| 56 | 40, 55 | syl 15 |
. . . . . 6
 Nn Tc Tc 
1c
Tc Tc
1c  |
| 57 | 56 | eleq2d 2420 |
. . . . 5
 Nn   Nn 1c c
c  1c  Tc Tc
 1c  Nn 1c c c 
1c  Tc Tc 1c   |
| 58 | 57 | adantr 451 |
. . . 4
  Nn Tc Tc
Nn  
Nn 1c c c 
1c  Tc Tc
 1c  Nn 1c c c 
1c  Tc Tc 1c   |
| 59 | 39, 58 | sylibrd 225 |
. . 3
  Nn Tc Tc
Nn  
Nn 1c c c   Tc Tc
 Nn 1c c c 
1c  Tc Tc
 1c   |
| 60 | 38, 59 | mpdan 649 |
. 2
 Nn   Nn 1c c
c   Tc Tc
 Nn 1c c c 
1c  Tc Tc
 1c   |
| 61 | 1, 8, 15, 22, 29, 35, 60 | finds 4412 |
1
 Nn  Nn 1c c c   Tc Tc
  |