Proof of Theorem sqrlem11
| Step | Hyp | Ref
| Expression |
| 1 | | sqrlem9.3 |
. . . . . . . . . . . 12
 |
| 2 | 1, 1 | remulcl 5315 |
. . . . . . . . . . 11

  |
| 3 | 2 | recn 5294 |
. . . . . . . . . 10

  |
| 4 | | 1re 5415 |
. . . . . . . . . . . . 13
 |
| 5 | 4, 4 | readdcl 5314 |
. . . . . . . . . . . 12
   |
| 6 | 5 | recn 5294 |
. . . . . . . . . . 11
   |
| 7 | 6 | negcl 5349 |
. . . . . . . . . 10
    |
| 8 | | sqrlem1.1 |
. . . . . . . . . . . 12
 |
| 9 | 8 | renegcl 5396 |
. . . . . . . . . . 11
  |
| 10 | 9 | recn 5294 |
. . . . . . . . . 10
  |
| 11 | 3, 7, 10 | mul12 5403 |
. . . . . . . . 9
  
             
    |
| 12 | 2, 9 | remulcl 5315 |
. . . . . . . . . . 11
  
   |
| 13 | 12 | recn 5294 |
. . . . . . . . . 10
  
   |
| 14 | 6, 13 | mulneg1 5425 |
. . . . . . . . 9
      
              |
| 15 | 13 | 1p1times 5413 |
. . . . . . . . . . 11
            
         |
| 16 | 15 | negeqi 5340 |
. . . . . . . . . 10
                   
    |
| 17 | | df-neg 5338 |
. . . . . . . . . 10
         
                  |
| 18 | 16, 17 | eqtr 1492 |
. . . . . . . . 9
                         |
| 19 | 11, 14, 18 | 3eqtr 1496 |
. . . . . . . 8
  
           
          |
| 20 | 2, 9 | readdcl 5314 |
. . . . . . . . . . 11
  
   |
| 21 | 8 | recn 5294 |
. . . . . . . . . . . . 13
 |
| 22 | 21 | negid 5360 |
. . . . . . . . . . . 12

   |
| 23 | | sqrlem9.6 |
. . . . . . . . . . . . 13
   |
| 24 | 8, 2, 9 | ltadd1 5573 |
. . . . . . . . . . . . 13

            |
| 25 | 23, 24 | mpbi 189 |
. . . . . . . . . . . 12

        |
| 26 | 22, 25 | eqbrtrr 2631 |
. . . . . . . . . . 11
      |
| 27 | 20, 20, 26, 26 | mulgt0i 5590 |
. . . . . . . . . 10
             |
| 28 | 3, 10, 3, 10 | muladd 5406 |
. . . . . . . . . 10
        
            
      
          |
| 29 | 27, 28 | breqtr 2633 |
. . . . . . . . 9
                           |
| 30 | | 0re 5420 |
. . . . . . . . . 10
 |
| 31 | 12, 12 | readdcl 5314 |
. . . . . . . . . 10
        
    |
| 32 | 2, 2 | remulcl 5315 |
. . . . . . . . . . 11
  
    |
| 33 | 9, 9 | remulcl 5315 |
. . . . . . . . . . 11
 
 
 |
| 34 | 32, 33 | readdcl 5314 |
. . . . . . . . . 10
        
    |
| 35 | 30, 31, 34 | ltsubadd 5576 |
. . . . . . . . 9
          
            
            
           
      |
| 36 | 29, 35 | mpbir 190 |
. . . . . . . 8
    
            
         |
| 37 | 19, 36 | eqbrtr 2629 |
. . . . . . 7
  
               
    |
| 38 | 5 | renegcl 5396 |
. . . . . . . . . 10
    |
| 39 | 38, 9 | remulcl 5315 |
. . . . . . . . 9
       |
| 40 | 2, 39 | remulcl 5315 |
. . . . . . . 8
  
        |
| 41 | | sqrlem9.5 |
. . . . . . . . 9
 |
| 42 | 1, 1, 41, 41 | mulgt0i 5590 |
. . . . . . . 8
   |
| 43 | 40, 34, 2, 42 | ltdiv1i 5787 |
. . . . . . 7
                   
      
       
           
        |
| 44 | 37, 43 | mpbi 189 |
. . . . . 6
                       
   
   |
| 45 | 39 | recn 5294 |
. . . . . . . 8
       |
| 46 | 1 | recn 5294 |
. . . . . . . . 9
 |
| 47 | 1, 41 | gt0ne0i 5599 |
. . . . . . . . 9
 |
| 48 | 46, 46, 47, 47 | muln0 5676 |
. . . . . . . 8

  |
| 49 | 3, 45, 48 | divcan3 5722 |
. . . . . . 7
                     |
| 50 | 6, 21 | mul2neg 5427 |
. . . . . . 7
           |
| 51 | 49, 50 | eqtr 1492 |
. . . . . 6
                   |
| 52 | 32 | recn 5294 |
. . . . . . 7
  
    |
| 53 | 33 | recn 5294 |
. . . . . . 7
 
 
 |
| 54 | 2, 42 | gt0ne0i 5599 |
. . . . . . 7

  |
| 55 | 52, 53, 3, 54 | divdir 5718 |
. . . . . 6
         
   
               
       |
| 56 | 44, 51, 55 | 3brtr3 2637 |
. . . . 5
        
                |
| 57 | 5, 8 | remulcl 5315 |
. . . . . 6
     |
| 58 | 32, 2, 54 | redivcl 5762 |
. . . . . . 7
           |
| 59 | 33, 2, 54 | redivcl 5762 |
. . . . . . 7
         |
| 60 | 58, 59 | readdcl 5314 |
. . . . . 6
        
    
 
     |
| 61 | 57, 60, 57 | ltadd1 5573 |
. . . . 5
    
             
                         
    
 
           |
| 62 | 56, 61 | mpbi 189 |
. . . 4
    
                   
            |
| 63 | 5, 5 | remulcl 5315 |
. . . . . . 7
       |
| 64 | 63 | recn 5294 |
. . . . . 6
       |
| 65 | 21, 64 | mulcom 5303 |
. . . . 5

                |
| 66 | 6, 6, 21 | mulass 5305 |
. . . . 5
                 |
| 67 | 57 | recn 5294 |
. . . . . 6
     |
| 68 | 67 | 1p1times 5413 |
. . . . 5
                   |
| 69 | 65, 66, 68 | 3eqtr 1496 |
. . . 4

                |