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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 4092 |
. . . . 5
| |
| 2 | 1 | imbi1d 231 |
. . . 4
|
| 3 | 2 | ralbidv 2532 |
. . 3
|
| 4 | breq2 4092 |
. . . . 5
| |
| 5 | 4 | imbi1d 231 |
. . . 4
|
| 6 | 5 | ralbidv 2532 |
. . 3
|
| 7 | breq2 4092 |
. . . . 5
| |
| 8 | 7 | imbi1d 231 |
. . . 4
|
| 9 | 8 | ralbidv 2532 |
. . 3
|
| 10 | breq2 4092 |
. . . . 5
| |
| 11 | 10 | imbi1d 231 |
. . . 4
|
| 12 | 11 | ralbidv 2532 |
. . 3
|
| 13 | nnnlt1 9168 |
. . . . 5
| |
| 14 | 13 | pm2.21d 624 |
. . . 4
|
| 15 | 14 | rgen 2585 |
. . 3
|
| 16 | 1nn 9153 |
. . . . 5
| |
| 17 | elex2 2819 |
. . . . 5
| |
| 18 | nfra1 2563 |
. . . . . 6
| |
| 19 | 18 | r19.3rm 3583 |
. . . . 5
|
| 20 | 16, 17, 19 | mp2b 8 |
. . . 4
|
| 21 | rsp 2579 |
. . . . . . . . . 10
| |
| 22 | 21 | com12 30 |
. . . . . . . . 9
|
| 23 | 22 | adantl 277 |
. . . . . . . 8
|
| 24 | indstr.2 |
. . . . . . . . . . . . 13
| |
| 25 | 24 | rgen 2585 |
. . . . . . . . . . . 12
|
| 26 | nfv 1576 |
. . . . . . . . . . . . 13
| |
| 27 | nfv 1576 |
. . . . . . . . . . . . . 14
| |
| 28 | nfsbc1v 3050 |
. . . . . . . . . . . . . 14
| |
| 29 | 27, 28 | nfim 1620 |
. . . . . . . . . . . . 13
|
| 30 | breq2 4092 |
. . . . . . . . . . . . . . . 16
| |
| 31 | 30 | imbi1d 231 |
. . . . . . . . . . . . . . 15
|
| 32 | 31 | ralbidv 2532 |
. . . . . . . . . . . . . 14
|
| 33 | sbceq1a 3041 |
. . . . . . . . . . . . . 14
| |
| 34 | 32, 33 | imbi12d 234 |
. . . . . . . . . . . . 13
|
| 35 | 26, 29, 34 | cbvral 2763 |
. . . . . . . . . . . 12
|
| 36 | 25, 35 | mpbi 145 |
. . . . . . . . . . 11
|
| 37 | 36 | rspec 2584 |
. . . . . . . . . 10
|
| 38 | vex 2805 |
. . . . . . . . . . . . 13
| |
| 39 | indstr.1 |
. . . . . . . . . . . . 13
| |
| 40 | 38, 39 | sbcie 3066 |
. . . . . . . . . . . 12
|
| 41 | dfsbcq 3033 |
. . . . . . . . . . . 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 717 |
. . . . . . 7
| |
| 48 | 46, 47 | imbitrrdi 162 |
. . . . . 6
|
| 49 | nnleltp1 9538 |
. . . . . . . . 9
| |
| 50 | nnz 9497 |
. . . . . . . . . 10
| |
| 51 | nnz 9497 |
. . . . . . . . . 10
| |
| 52 | zleloe 9525 |
. . . . . . . . . 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 2599 |
. . . 4
|
| 59 | 20, 58 | biimtrid 152 |
. . 3
|
| 60 | 3, 6, 9, 12, 15, 59 | nnind 9158 |
. 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 619 ax-in2 620 ax-io 716 ax-5 1495 ax-7 1496 ax-gen 1497 ax-ie1 1541 ax-ie2 1542 ax-8 1552 ax-10 1553 ax-11 1554 ax-i12 1555 ax-bndl 1557 ax-4 1558 ax-17 1574 ax-i9 1578 ax-ial 1582 ax-i5r 1583 ax-13 2204 ax-14 2205 ax-ext 2213 ax-sep 4207 ax-pow 4264 ax-pr 4299 ax-un 4530 ax-setind 4635 ax-cnex 8122 ax-resscn 8123 ax-1cn 8124 ax-1re 8125 ax-icn 8126 ax-addcl 8127 ax-addrcl 8128 ax-mulcl 8129 ax-addcom 8131 ax-addass 8133 ax-distr 8135 ax-i2m1 8136 ax-0lt1 8137 ax-0id 8139 ax-rnegex 8140 ax-cnre 8142 ax-pre-ltirr 8143 ax-pre-ltwlin 8144 ax-pre-lttrn 8145 ax-pre-ltadd 8147 |
| This theorem depends on definitions: df-bi 117 df-3or 1005 df-3an 1006 df-tru 1400 df-fal 1403 df-nf 1509 df-sb 1811 df-eu 2082 df-mo 2083 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2363 df-ne 2403 df-nel 2498 df-ral 2515 df-rex 2516 df-reu 2517 df-rab 2519 df-v 2804 df-sbc 3032 df-dif 3202 df-un 3204 df-in 3206 df-ss 3213 df-pw 3654 df-sn 3675 df-pr 3676 df-op 3678 df-uni 3894 df-int 3929 df-br 4089 df-opab 4151 df-id 4390 df-xp 4731 df-rel 4732 df-cnv 4733 df-co 4734 df-dm 4735 df-iota 5286 df-fun 5328 df-fv 5334 df-riota 5970 df-ov 6020 df-oprab 6021 df-mpo 6022 df-pnf 8215 df-mnf 8216 df-xr 8217 df-ltxr 8218 df-le 8219 df-sub 8351 df-neg 8352 df-inn 9143 df-n0 9402 df-z 9479 |
| This theorem is referenced by: indstr2 9842 |
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