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| Mirrors > Home > ILE Home > Th. List > indstr | Unicode version | ||
| Description: Strong Mathematical Induction for positive integers (inference schema). (Contributed by NM, 17-Aug-2001.) |
| Ref | Expression |
|---|---|
| indstr.1 |
|
| indstr.2 |
|
| Ref | Expression |
|---|---|
| indstr |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | breq2 4129 |
. . . . 5
| |
| 2 | 1 | imbi1d 231 |
. . . 4
|
| 3 | 2 | ralbidv 2550 |
. . 3
|
| 4 | breq2 4129 |
. . . . 5
| |
| 5 | 4 | imbi1d 231 |
. . . 4
|
| 6 | 5 | ralbidv 2550 |
. . 3
|
| 7 | breq2 4129 |
. . . . 5
| |
| 8 | 7 | imbi1d 231 |
. . . 4
|
| 9 | 8 | ralbidv 2550 |
. . 3
|
| 10 | breq2 4129 |
. . . . 5
| |
| 11 | 10 | imbi1d 231 |
. . . 4
|
| 12 | 11 | ralbidv 2550 |
. . 3
|
| 13 | nnnlt1 9309 |
. . . . 5
| |
| 14 | 13 | pm2.21d 628 |
. . . 4
|
| 15 | 14 | rgen 2603 |
. . 3
|
| 16 | 1nn 9294 |
. . . . 5
| |
| 17 | elex2 2838 |
. . . . 5
| |
| 18 | nfra1 2581 |
. . . . . 6
| |
| 19 | 18 | r19.3rm 3613 |
. . . . 5
|
| 20 | 16, 17, 19 | mp2b 8 |
. . . 4
|
| 21 | rsp 2597 |
. . . . . . . . . 10
| |
| 22 | 21 | com12 30 |
. . . . . . . . 9
|
| 23 | 22 | adantl 277 |
. . . . . . . 8
|
| 24 | indstr.2 |
. . . . . . . . . . . . 13
| |
| 25 | 24 | rgen 2603 |
. . . . . . . . . . . 12
|
| 26 | nfv 1581 |
. . . . . . . . . . . . 13
| |
| 27 | nfv 1581 |
. . . . . . . . . . . . . 14
| |
| 28 | nfsbc1v 3070 |
. . . . . . . . . . . . . 14
| |
| 29 | 27, 28 | nfim 1625 |
. . . . . . . . . . . . 13
|
| 30 | breq2 4129 |
. . . . . . . . . . . . . . . 16
| |
| 31 | 30 | imbi1d 231 |
. . . . . . . . . . . . . . 15
|
| 32 | 31 | ralbidv 2550 |
. . . . . . . . . . . . . 14
|
| 33 | sbceq1a 3061 |
. . . . . . . . . . . . . 14
| |
| 34 | 32, 33 | imbi12d 234 |
. . . . . . . . . . . . 13
|
| 35 | 26, 29, 34 | cbvral 2782 |
. . . . . . . . . . . 12
|
| 36 | 25, 35 | mpbi 145 |
. . . . . . . . . . 11
|
| 37 | 36 | rspec 2602 |
. . . . . . . . . 10
|
| 38 | vex 2824 |
. . . . . . . . . . . . 13
| |
| 39 | indstr.1 |
. . . . . . . . . . . . 13
| |
| 40 | 38, 39 | sbcie 3086 |
. . . . . . . . . . . 12
|
| 41 | dfsbcq 3053 |
. . . . . . . . . . . 12
| |
| 42 | 40, 41 | bitr3id 194 |
. . . . . . . . . . 11
|
| 43 | 42 | biimprcd 160 |
. . . . . . . . . 10
|
| 44 | 37, 43 | syl6 33 |
. . . . . . . . 9
|
| 45 | 44 | adantr 276 |
. . . . . . . 8
|
| 46 | 23, 45 | jcad 307 |
. . . . . . 7
|
| 47 | jaob 722 |
. . . . . . 7
| |
| 48 | 46, 47 | imbitrrdi 162 |
. . . . . 6
|
| 49 | nnleltp1 9683 |
. . . . . . . . 9
| |
| 50 | nnz 9642 |
. . . . . . . . . 10
| |
| 51 | nnz 9642 |
. . . . . . . . . 10
| |
| 52 | zleloe 9670 |
. . . . . . . . . 10
| |
| 53 | 50, 51, 52 | syl2an 289 |
. . . . . . . . 9
|
| 54 | 49, 53 | bitr3d 190 |
. . . . . . . 8
|
| 55 | 54 | ancoms 268 |
. . . . . . 7
|
| 56 | 55 | imbi1d 231 |
. . . . . 6
|
| 57 | 48, 56 | sylibrd 169 |
. . . . 5
|
| 58 | 57 | ralimdva 2617 |
. . . 4
|
| 59 | 20, 58 | biimtrid 152 |
. . 3
|
| 60 | 3, 6, 9, 12, 15, 59 | nnind 9299 |
. 2
|
| 61 | 60, 24 | mpd 13 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 623 ax-in2 624 ax-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-14 2212 ax-ext 2220 ax-sep 4244 ax-pow 4306 ax-pr 4341 ax-un 4573 ax-setind 4679 ax-cnex 8260 ax-resscn 8261 ax-1cn 8262 ax-1re 8263 ax-icn 8264 ax-addcl 8265 ax-addrcl 8266 ax-mulcl 8267 ax-addcom 8269 ax-addass 8271 ax-distr 8273 ax-i2m1 8274 ax-0lt1 8275 ax-0id 8277 ax-rnegex 8278 ax-cnre 8280 ax-pre-ltirr 8281 ax-pre-ltwlin 8282 ax-pre-lttrn 8283 ax-pre-ltadd 8285 |
| This theorem depends on definitions: df-bi 117 df-3or 1010 df-3an 1011 df-tru 1405 df-fal 1408 df-nf 1514 df-sb 1816 df-eu 2089 df-mo 2090 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ne 2421 df-nel 2516 df-ral 2533 df-rex 2534 df-reu 2535 df-rab 2537 df-v 2823 df-sbc 3052 df-dif 3222 df-un 3224 df-in 3226 df-ss 3233 df-pw 3687 df-sn 3711 df-pr 3712 df-op 3714 df-uni 3931 df-int 3966 df-br 4126 df-opab 4188 df-id 4433 df-xp 4775 df-rel 4776 df-cnv 4777 df-co 4778 df-dm 4779 df-iota 5332 df-fun 5374 df-fv 5380 df-riota 6028 df-ov 6078 df-oprab 6079 df-mpo 6080 df-pnf 8352 df-mnf 8353 df-xr 8354 df-ltxr 8355 df-le 8356 df-sub 8489 df-neg 8490 df-inn 9284 df-n0 9543 df-z 9624 |
| This theorem is referenced by: indstr2 9988 |
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