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| Description: Closure of multiplication of natural numbers. |
| Ref | Expression |
|---|---|
| nnmulcl |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | opreq2 4027 |
. . . . 5
| |
| 2 | 1 | eleq1d 1583 |
. . . 4
|
| 3 | 2 | imbi2d 615 |
. . 3
|
| 4 | opreq2 4027 |
. . . . 5
| |
| 5 | 4 | eleq1d 1583 |
. . . 4
|
| 6 | 5 | imbi2d 615 |
. . 3
|
| 7 | opreq2 4027 |
. . . . 5
| |
| 8 | 7 | eleq1d 1583 |
. . . 4
|
| 9 | 8 | imbi2d 615 |
. . 3
|
| 10 | opreq2 4027 |
. . . . 5
| |
| 11 | 10 | eleq1d 1583 |
. . . 4
|
| 12 | 11 | imbi2d 615 |
. . 3
|
| 13 | nncn 6075 |
. . . 4
| |
| 14 | ax1id 5436 |
. . . . . 6
| |
| 15 | 14 | eleq1d 1583 |
. . . . 5
|
| 16 | 15 | biimprd 152 |
. . . 4
|
| 17 | 13, 16 | mpcom 49 |
. . 3
|
| 18 | ax1cn 5423 |
. . . . . . . . . . 11
| |
| 19 | adddi 5463 |
. . . . . . . . . . 11
| |
| 20 | 18, 19 | mp3an3 911 |
. . . . . . . . . 10
|
| 21 | 14 | opreq2d 4034 |
. . . . . . . . . . 11
|
| 22 | 21 | adantr 389 |
. . . . . . . . . 10
|
| 23 | 20, 22 | eqtrd 1550 |
. . . . . . . . 9
|
| 24 | nncn 6075 |
. . . . . . . . 9
| |
| 25 | 23, 13, 24 | syl2an 456 |
. . . . . . . 8
|
| 26 | 25 | eleq1d 1583 |
. . . . . . 7
|
| 27 | nnaddcl 6085 |
. . . . . . . 8
| |
| 28 | 27 | ancoms 438 |
. . . . . . 7
|
| 29 | 26, 28 | syl5bir 208 |
. . . . . 6
|
| 30 | 29 | exp4b 379 |
. . . . 5
|
| 31 | 30 | pm2.43b 67 |
. . . 4
|
| 32 | 31 | a2d 13 |
. . 3
|
| 33 | 3, 6, 9, 12, 17, 32 | nnind 6082 |
. 2
|
| 34 | 33 | impcom 349 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: nndivtr 6106 nn0mulcli 6290 qaddcl 6408 qmulcl 6410 modmulnn 6469 nnexpcl 6771 nnesqi 6863 faccl 7143 facdiv 7145 faclbnd3 7150 faclbnd4lem3 7153 faclbnd5 7156 bcpasc2i 7170 permnn 7176 efaddlem3 7545 efaddlem5 7547 efaddlem7 7549 efaddlem12 7554 efaddlem15 7557 efaddlem17 7559 efaddlem19 7561 efaddlem21 7563 efaddlem22 7564 efaddlem25 7567 eftlubcl 7581 ef1tllem 7586 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 998 ax-gen 999 ax-8 1000 ax-9 1001 ax-10 1002 ax-11 1003 ax-12 1004 ax-13 1005 ax-14 1006 ax-17 1007 ax-4 1009 ax-5o 1011 ax-6o 1014 ax-9o 1159 ax-10o 1177 ax-16 1247 ax-11o 1255 ax-ext 1500 ax-rep 2767 ax-sep 2777 ax-nul 2784 ax-pow 2818 ax-pr 2855 ax-un 3089 ax-inf2 4770 |
| This theorem depends on definitions: df-bi 145 df-or 222 df-an 223 df-3or 782 df-3an 783 df-ex 1017 df-sb 1209 df-eu 1421 df-mo 1422 df-clab 1506 df-cleq 1511 df-clel 1514 df-ne 1630 df-ral 1695 df-rex 1696 df-reu 1697 df-rab 1698 df-v 1858 df-sbc 1987 df-csb 2052 df-dif 2101 df-un 2102 df-in 2103 df-ss 2105 df-pss 2107 df-nul 2333 df-if 2416 df-pw 2459 df-sn 2470 df-pr 2471 df-tp 2473 df-op 2474 df-uni 2570 df-int 2601 df-iun 2635 df-br 2693 df-opab 2741 df-tr 2755 df-eprel 2910 df-id 2913 df-po 2918 df-so 2929 df-fr 2947 df-we 2962 df-ord 2978 df-on 2979 df-lim 2980 df-suc 2981 df-om 3219 df-xp 3265 df-rel 3266 df-cnv 3267 df-co 3268 df-dm 3269 df-rn 3270 df-res 3271 df-ima 3272 df-fun 3273 df-fn 3274 df-f 3275 df-fv 3279 df-opr 4023 df-oprab 4024 df-1st 4140 df-2nd 4141 df-rdg 4233 df-1o 4269 df-oadd 4271 df-omul 4272 df-er 4401 df-ec 4403 df-qs 4406 df-ni 5154 df-pli 5155 df-mi 5156 df-lti 5157 df-plpq 5189 df-mpq 5190 df-enq 5191 df-nq 5192 df-plq 5193 df-mq 5194 df-rq 5195 df-ltq 5196 df-1q 5197 df-np 5240 df-1p 5241 df-plp 5242 df-mp 5243 df-ltp 5244 df-plpr 5318 df-mpr 5319 df-enr 5320 df-nr 5321 df-plr 5322 df-mr 5323 df-ltr 5324 df-0r 5325 df-1r 5326 df-m1r 5327 df-c 5394 df-0 5395 df-1 5396 df-i 5397 df-r 5398 df-plus 5399 df-mul 5400 df-sub 5510 df-neg 5512 df-n 6070 |