Proof of Theorem pellexlem2
| Step | Hyp | Ref
| Expression |
| 1 | | simpl3 1029 |
. . . . . . . . . 10
  
                  
  |
| 2 | 1 | nnred 9199 |
. . . . . . . . 9
  
                  
  |
| 3 | 2 | resqcld 11005 |
. . . . . . . 8
  
                         |
| 4 | 2 | sqge0d 11006 |
. . . . . . . 8
  
                  
      |
| 5 | 3, 4 | absidd 11788 |
. . . . . . 7
  
                                 |
| 6 | 5 | eqcomd 2237 |
. . . . . 6
  
                                 |
| 7 | 6 | oveq2d 6044 |
. . . . 5
  
                                                  
                  |
| 8 | | simpl2 1028 |
. . . . . . . . 9
  
                  
  |
| 9 | 8 | nncnd 9200 |
. . . . . . . 8
  
                  
  |
| 10 | 9 | sqcld 10977 |
. . . . . . 7
  
                         |
| 11 | | simpl1 1027 |
. . . . . . . . 9
  
                  
  |
| 12 | 11 | nncnd 9200 |
. . . . . . . 8
  
                  
  |
| 13 | 1 | nncnd 9200 |
. . . . . . . . 9
  
                  
  |
| 14 | 13 | sqcld 10977 |
. . . . . . . 8
  
                         |
| 15 | 12, 14 | mulcld 8243 |
. . . . . . 7
  
                           |
| 16 | 10, 15 | subcld 8533 |
. . . . . 6
  
                        
        |
| 17 | 1 | nnap0d 9232 |
. . . . . . 7
  
                   #   |
| 18 | | sqap0 10912 |
. . . . . . . 8
      #
#    |
| 19 | 18 | biimpar 297 |
. . . . . . 7
  #      #   |
| 20 | 13, 17, 19 | syl2anc 411 |
. . . . . 6
  
                       #   |
| 21 | 16, 14, 20 | absdivapd 11816 |
. . . . 5
  
                            
                                        |
| 22 | 7, 21 | eqtr4d 2267 |
. . . 4
  
                                                  
              |
| 23 | 22 | oveq2d 6044 |
. . 3
  
                                                             
               |
| 24 | 16 | abscld 11802 |
. . . . 5
  
                                     |
| 25 | 24 | recnd 8251 |
. . . 4
  
                                     |
| 26 | 25, 14, 20 | divcanap2d 9015 |
. . 3
  
                                                       
         |
| 27 | 10, 15, 14, 20 | divsubdirapd 9053 |
. . . . . 6
  
                         
                                     |
| 28 | 9, 13, 17 | sqdivapd 10992 |
. . . . . . . 8
  
                                     |
| 29 | 28 | eqcomd 2237 |
. . . . . . 7
  
                                     |
| 30 | 11 | nnred 9199 |
. . . . . . . . 9
  
                  
  |
| 31 | 11 | nnnn0d 9498 |
. . . . . . . . . 10
  
                  
  |
| 32 | 31 | nn0ge0d 9501 |
. . . . . . . . 9
  
                  
  |
| 33 | | remsqsqrt 11653 |
. . . . . . . . 9
               |
| 34 | 30, 32, 33 | syl2anc 411 |
. . . . . . . 8
  
                               |
| 35 | 30, 32 | resqrtcld 11784 |
. . . . . . . . . 10
  
                         |
| 36 | 35 | recnd 8251 |
. . . . . . . . 9
  
                         |
| 37 | 36 | sqvald 10976 |
. . . . . . . 8
  
                                       |
| 38 | 12, 14, 20 | divcanap4d 9019 |
. . . . . . . 8
  
                                 |
| 39 | 34, 37, 38 | 3eqtr4rd 2275 |
. . . . . . 7
  
                                         |
| 40 | 29, 39 | oveq12d 6046 |
. . . . . 6
  
                                                             |
| 41 | 9, 13, 17 | divclapd 9013 |
. . . . . . . 8
  
                       |
| 42 | | subsq 10952 |
. . . . . . . 8
                                             |
| 43 | 41, 36, 42 | syl2anc 411 |
. . . . . . 7
  
                                                       |
| 44 | 41, 36 | addcld 8242 |
. . . . . . . 8
  
                             |
| 45 | 8 | nnred 9199 |
. . . . . . . . . . 11
  
                  
  |
| 46 | 45, 1 | nndivred 9236 |
. . . . . . . . . 10
  
                       |
| 47 | 46, 35 | resubcld 8603 |
. . . . . . . . 9
  
                             |
| 48 | 47 | recnd 8251 |
. . . . . . . 8
  
                             |
| 49 | 44, 48 | mulcomd 8244 |
. . . . . . 7
  
                                                         |
| 50 | 43, 49 | eqtrd 2264 |
. . . . . 6
  
                                                       |
| 51 | 27, 40, 50 | 3eqtrd 2268 |
. . . . 5
  
                         
                               |
| 52 | 51 | fveq2d 5652 |
. . . 4
  
                            
                                    |
| 53 | 52 | oveq2d 6044 |
. . 3
  
                                                                             |
| 54 | 23, 26, 53 | 3eqtr3d 2272 |
. 2
  
                                                                 |
| 55 | 48, 44 | absmuld 11815 |
. . . 4
  
                                                                     |
| 56 | 55 | oveq2d 6044 |
. . 3
  
                                                                                 |
| 57 | 48 | abscld 11802 |
. . . . . 6
  
                                 |
| 58 | 44 | abscld 11802 |
. . . . . 6
  
                                 |
| 59 | 57, 58 | remulcld 8253 |
. . . . 5
  
                                               |
| 60 | 3, 59 | remulcld 8253 |
. . . 4
  
                                                     |
| 61 | | 2nn0 9462 |
. . . . . . . . 9
 |
| 62 | 61 | nn0negzi 9557 |
. . . . . . . 8
  |
| 63 | 62 | a1i 9 |
. . . . . . 7
  
                      |
| 64 | 2, 17, 63 | reexpclzapd 11004 |
. . . . . 6
  
                          |
| 65 | 64, 58 | remulcld 8253 |
. . . . 5
  
                                        |
| 66 | 3, 65 | remulcld 8253 |
. . . 4
  
                                              |
| 67 | | 1red 8237 |
. . . . 5
  
                     |
| 68 | | 2re 9256 |
. . . . . . 7
 |
| 69 | 68 | a1i 9 |
. . . . . 6
  
                     |
| 70 | 69, 35 | remulcld 8253 |
. . . . 5
  
                           |
| 71 | 67, 70 | readdcld 8252 |
. . . 4
  
                             |
| 72 | | simpr 110 |
. . . . . 6
  
                                      |
| 73 | 46, 35 | readdcld 8252 |
. . . . . . . . 9
  
                             |
| 74 | 8 | nngt0d 9230 |
. . . . . . . . . . 11
  
                  
  |
| 75 | 1 | nngt0d 9230 |
. . . . . . . . . . 11
  
                  
  |
| 76 | 45, 2, 74, 75 | divgt0d 9158 |
. . . . . . . . . 10
  
                  
    |
| 77 | 11 | nngt0d 9230 |
. . . . . . . . . . 11
  
                  
  |
| 78 | | sqrtgt0 11655 |
. . . . . . . . . . 11
  
      |
| 79 | 30, 77, 78 | syl2anc 411 |
. . . . . . . . . 10
  
                  
      |
| 80 | 46, 35, 76, 79 | addgt0d 8744 |
. . . . . . . . 9
  
                  
          |
| 81 | 73, 80 | gt0ap0d 8852 |
. . . . . . . 8
  
                           #   |
| 82 | | absgt0ap 11720 |
. . . . . . . . 9
        
         #                |
| 83 | 82 | biimpa 296 |
. . . . . . . 8
                  # 
              |
| 84 | 44, 81, 83 | syl2anc 411 |
. . . . . . 7
  
                  
              |
| 85 | | ltmul1 8815 |
. . . . . . 7
                                                               
                                                |
| 86 | 57, 64, 58, 84, 85 | syl112anc 1278 |
. . . . . 6
  
                                    
                                                |
| 87 | 72, 86 | mpbid 147 |
. . . . 5
  
                                                                  |
| 88 | 2, 17 | sqgt0apd 11007 |
. . . . . 6
  
                  
      |
| 89 | | ltmul2 9079 |
. . . . . 6
                                                                                                       
                                                            |
| 90 | 59, 65, 3, 88, 89 | syl112anc 1278 |
. . . . 5
  
                                                                                                                             |
| 91 | 87, 90 | mpbid 147 |
. . . 4
  
                                                                              |
| 92 | 13, 17, 63 | expclzapd 10984 |
. . . . . . 7
  
                          |
| 93 | 58 | recnd 8251 |
. . . . . . 7
  
                                 |
| 94 | | mulass 8206 |
. . . . . . . 8
                                                                            |
| 95 | 94 | eqcomd 2237 |
. . . . . . 7
                                                                            |
| 96 | 14, 92, 93, 95 | syl3anc 1274 |
. . . . . 6
  
                                                                       |
| 97 | 61 | a1i 9 |
. . . . . . . . . 10
  
                     |
| 98 | | expnegap0 10853 |
. . . . . . . . . 10
  #
              |
| 99 | 13, 17, 97, 98 | syl3anc 1274 |
. . . . . . . . 9
  
                                |
| 100 | 99 | oveq2d 6044 |
. . . . . . . 8
  
                                            |
| 101 | 14, 20 | recidapd 9006 |
. . . . . . . 8
  
                                 |
| 102 | 100, 101 | eqtrd 2264 |
. . . . . . 7
  
                                |
| 103 | 102 | oveq1d 6043 |
. . . . . 6
  
                                                            |
| 104 | 93 | mullidd 8240 |
. . . . . 6
  
                                               |
| 105 | 96, 103, 104 | 3eqtrd 2268 |
. . . . 5
  
                                                          |
| 106 | 41, 36 | addcomd 8373 |
. . . . . . . 8
  
                                     |
| 107 | | ppncan 8464 |
. . . . . . . . . 10
                                           |
| 108 | 107 | eqcomd 2237 |
. . . . . . . . 9
                                           |
| 109 | 36, 36, 41, 108 | syl3anc 1274 |
. . . . . . . 8
  
                                                 |
| 110 | 36, 36 | addcld 8242 |
. . . . . . . . . 10
  
                               |
| 111 | 110, 48 | addcomd 8373 |
. . . . . . . . 9
  
                                                             |
| 112 | | 2times 9314 |
. . . . . . . . . . . 12
                       |
| 113 | 112 | eqcomd 2237 |
. . . . . . . . . . 11
                       |
| 114 | 36, 113 | syl 14 |
. . . . . . . . . 10
  
                                     |
| 115 | 114 | oveq2d 6044 |
. . . . . . . . 9
  
                                                         |
| 116 | 111, 115 | eqtrd 2264 |
. . . . . . . 8
  
                                                         |
| 117 | 106, 109,
116 | 3eqtrd 2268 |
. . . . . . 7
  
                                             |
| 118 | 117 | fveq2d 5652 |
. . . . . 6
  
                                                     |
| 119 | 47, 70 | readdcld 8252 |
. . . . . . . . 9
  
                                     |
| 120 | 119 | recnd 8251 |
. . . . . . . 8
  
                                     |
| 121 | 120 | abscld 11802 |
. . . . . . 7
  
                                         |
| 122 | 70 | recnd 8251 |
. . . . . . . . 9
  
                           |
| 123 | 122 | abscld 11802 |
. . . . . . . 8
  
                               |
| 124 | 57, 123 | readdcld 8252 |
. . . . . . 7
  
                                             |
| 125 | 48, 122 | abstrid 11817 |
. . . . . . 7
  
                                                                 |
| 126 | | 0le2 9276 |
. . . . . . . . . . . 12
 |
| 127 | 126 | a1i 9 |
. . . . . . . . . . 11
  
                  
  |
| 128 | 30, 32 | sqrtge0d 11787 |
. . . . . . . . . . 11
  
                  
      |
| 129 | 69, 35, 127, 128 | mulge0d 8844 |
. . . . . . . . . 10
  
                  
        |
| 130 | 70, 129 | absidd 11788 |
. . . . . . . . 9
  
                                     |
| 131 | 130 | oveq2d 6044 |
. . . . . . . 8
  
                                                                 |
| 132 | 1 | nnsqcld 11000 |
. . . . . . . . . . . . . . 15
  
                         |
| 133 | 132 | nnge1d 9229 |
. . . . . . . . . . . . . 14
  
                  
      |
| 134 | | 0lt1 8349 |
. . . . . . . . . . . . . . . 16
 |
| 135 | 134 | a1i 9 |
. . . . . . . . . . . . . . 15
  
                  
  |
| 136 | | lerec 9107 |
. . . . . . . . . . . . . . 15
                   
           |
| 137 | 67, 135, 3, 88, 136 | syl22anc 1275 |
. . . . . . . . . . . . . 14
  
                       
           |
| 138 | 133, 137 | mpbid 147 |
. . . . . . . . . . . . 13
  
                             |
| 139 | | 1div1e1 8927 |
. . . . . . . . . . . . 13
   |
| 140 | 138, 139 | breqtrdi 4134 |
. . . . . . . . . . . 12
  
                           |
| 141 | 99, 140 | eqbrtrd 4115 |
. . . . . . . . . . 11
  
                       
  |
| 142 | 57, 64, 67, 72, 141 | ltletrd 8646 |
. . . . . . . . . 10
  
                                 |
| 143 | 57, 67, 142 | ltled 8341 |
. . . . . . . . 9
  
                                 |
| 144 | 57, 67, 70, 143 | leadd1dd 8782 |
. . . . . . . 8
  
                                                 |
| 145 | 131, 144 | eqbrtrd 4115 |
. . . . . . 7
  
                                          
          |
| 146 | 121, 124,
71, 125, 145 | letrd 8346 |
. . . . . 6
  
                                                 |
| 147 | 118, 146 | eqbrtrd 4115 |
. . . . 5
  
                                         |
| 148 | 105, 147 | eqbrtrd 4115 |
. . . 4
  
                                                      |
| 149 | 60, 66, 71, 91, 148 | ltletrd 8646 |
. . 3
  
                                                             |
| 150 | 56, 149 | eqbrtrd 4115 |
. 2
  
                                                         |
| 151 | 54, 150 | eqbrtrd 4115 |
1
  
                                             |