Proof of Theorem adjadd
| Step | Hyp | Ref
| Expression |
| 1 | | hoaddcl 11321 |
. . 3
     
     
       |
| 2 | | dmadjop 11457 |
. . 3

adjh
      |
| 3 | | dmadjop 11457 |
. . 3

adjh
      |
| 4 | 1, 2, 3 | syl2an 503 |
. 2
  adjh
adjh         |
| 5 | | hoaddcl 11321 |
. . 3
  adjh      adjh        adjh  adjh         |
| 6 | | dmadjrn 11458 |
. . . 4

adjh
adjh  adjh |
| 7 | | dmadjop 11457 |
. . . 4
 adjh  adjh adjh        |
| 8 | 6, 7 | syl 12 |
. . 3

adjh
adjh        |
| 9 | | dmadjrn 11458 |
. . . 4

adjh
adjh  adjh |
| 10 | | dmadjop 11457 |
. . . 4
 adjh  adjh adjh        |
| 11 | 9, 10 | syl 12 |
. . 3

adjh
adjh        |
| 12 | 5, 8, 11 | syl2an 503 |
. 2
  adjh
adjh  adjh  adjh         |
| 13 | | ffvelrn 4787 |
. . . . . . . . . 10
     
       |
| 14 | 13, 2 | sylan 497 |
. . . . . . . . 9
  adjh
    
  |
| 15 | 14 | ad2ant2r 445 |
. . . . . . . 8
   adjh adjh       
  |
| 16 | | ffvelrn 4787 |
. . . . . . . . . 10
     
       |
| 17 | 16, 3 | sylan 497 |
. . . . . . . . 9
  adjh
    
  |
| 18 | 17 | ad2ant2lr 446 |
. . . . . . . 8
   adjh adjh       
  |
| 19 | | simprr 451 |
. . . . . . . 8
   adjh adjh      |
| 20 | | ax-his2 10583 |
. . . . . . . 8
          
     
                 
    |
| 21 | 15, 18, 19, 20 | syl111anc 1100 |
. . . . . . 7
   adjh adjh                     
          |
| 22 | | adj2 11495 |
. . . . . . . . . 10
  adjh
         adjh        |
| 23 | 22 | 3expb 1068 |
. . . . . . . . 9
  adjh        
   adjh        |
| 24 | 23 | adantlr 429 |
. . . . . . . 8
   adjh adjh            adjh        |
| 25 | | adj2 11495 |
. . . . . . . . . 10
  adjh
         adjh        |
| 26 | 25 | 3expb 1068 |
. . . . . . . . 9
  adjh        
   adjh        |
| 27 | 26 | adantll 428 |
. . . . . . . 8
   adjh adjh            adjh        |
| 28 | 24, 27 | opreq12d 4900 |
. . . . . . 7
   adjh adjh               
     adjh        adjh         |
| 29 | 21, 28 | eqtrd 1925 |
. . . . . 6
   adjh adjh                   adjh        adjh         |
| 30 | | hosvalOLD 11150 |
. . . . . . . . 9
                       
       |
| 31 | 2, 3 | anim12i 360 |
. . . . . . . . 9
  adjh
adjh     
       |
| 32 | 30, 31 | sylan 497 |
. . . . . . . 8
   adjh adjh

                  |
| 33 | 32 | adantrr 431 |
. . . . . . 7
   adjh adjh                      |
| 34 | 33 | opreq1d 4897 |
. . . . . 6
   adjh adjh                 
        |
| 35 | | simprl 450 |
. . . . . . 7
   adjh adjh      |
| 36 | | adjcl 11493 |
. . . . . . . 8
  adjh
  adjh       |
| 37 | 36 | ad2ant2rl 447 |
. . . . . . 7
   adjh adjh     adjh       |
| 38 | | adjcl 11493 |
. . . . . . . 8
  adjh
  adjh       |
| 39 | 38 | ad2ant2l 444 |
. . . . . . 7
   adjh adjh     adjh       |
| 40 | | his7 10589 |
. . . . . . 7
   adjh      adjh         adjh      adjh          adjh        adjh         |
| 41 | 35, 37, 39, 40 | syl111anc 1100 |
. . . . . 6
   adjh adjh       adjh      adjh          adjh        adjh         |
| 42 | 29, 34, 41 | 3eqtr4d 1937 |
. . . . 5
   adjh adjh               adjh      adjh         |
| 43 | | hosvalOLD 11150 |
. . . . . . . 8
   adjh      adjh          adjh  adjh        adjh      adjh        |
| 44 | 8, 11 | anim12i 360 |
. . . . . . . 8
  adjh
adjh  adjh      adjh         |
| 45 | 43, 44 | sylan 497 |
. . . . . . 7
   adjh adjh 
  adjh  adjh        adjh      adjh        |
| 46 | 45 | adantrl 430 |
. . . . . 6
   adjh adjh      adjh 
adjh        adjh      adjh        |
| 47 | 46 | opreq2d 4898 |
. . . . 5
   adjh adjh       adjh  adjh          adjh      adjh         |
| 48 | 42, 47 | eqtr4d 1928 |
. . . 4
   adjh adjh               adjh  adjh         |
| 49 | 48 | ex 402 |
. . 3
  adjh
adjh          
    adjh 
adjh          |
| 50 | 49 | r19.21aivv 2183 |
. 2
  adjh
adjh              adjh  adjh         |
| 51 | | adjeq 11496 |
. 2
       
 adjh  adjh       

           adjh  adjh        adjh 
   adjh  adjh     |
| 52 | 4, 12, 50, 51 | syl111anc 1100 |
1
  adjh
adjh adjh     adjh  adjh     |