| Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > ILE Home > Th. List > nnge1 | Unicode version | ||
| Description: A positive integer is one or greater. (Contributed by NM, 25-Aug-1999.) |
| Ref | Expression |
|---|---|
| nnge1 |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | breq2 4134 |
. 2
| |
| 2 | breq2 4134 |
. 2
| |
| 3 | breq2 4134 |
. 2
| |
| 4 | breq2 4134 |
. 2
| |
| 5 | 1le1 8903 |
. 2
| |
| 6 | nnre 9314 |
. . 3
| |
| 7 | recn 8313 |
. . . . . 6
| |
| 8 | 7 | addridd 8477 |
. . . . 5
|
| 9 | 8 | breq2d 4142 |
. . . 4
|
| 10 | 0lt1 8455 |
. . . . . . . 8
| |
| 11 | 0re 8327 |
. . . . . . . . 9
| |
| 12 | 1re 8326 |
. . . . . . . . 9
| |
| 13 | axltadd 8396 |
. . . . . . . . 9
| |
| 14 | 11, 12, 13 | mp3an12 1368 |
. . . . . . . 8
|
| 15 | 10, 14 | mpi 15 |
. . . . . . 7
|
| 16 | readdcl 8306 |
. . . . . . . . 9
| |
| 17 | 11, 16 | mpan2 429 |
. . . . . . . 8
|
| 18 | peano2re 8464 |
. . . . . . . 8
| |
| 19 | lttr 8400 |
. . . . . . . . 9
| |
| 20 | 12, 19 | mp3an3 1367 |
. . . . . . . 8
|
| 21 | 17, 18, 20 | syl2anc 415 |
. . . . . . 7
|
| 22 | 15, 21 | mpand 433 |
. . . . . 6
|
| 23 | 22 | con3d 640 |
. . . . 5
|
| 24 | lenlt 8402 |
. . . . . 6
| |
| 25 | 12, 17, 24 | sylancr 418 |
. . . . 5
|
| 26 | lenlt 8402 |
. . . . . 6
| |
| 27 | 12, 18, 26 | sylancr 418 |
. . . . 5
|
| 28 | 23, 25, 27 | 3imtr4d 203 |
. . . 4
|
| 29 | 9, 28 | sylbird 170 |
. . 3
|
| 30 | 6, 29 | syl 14 |
. 2
|
| 31 | 1, 2, 3, 4, 5, 30 | nnind 9323 |
1
|
| Colors of variables: wff set class |
| This proof depends on syntax axioms:
|
| This proof depends on 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 4249 ax-pow 4311 ax-pr 4346 ax-un 4578 ax-setind 4684 ax-cnex 8271 ax-resscn 8272 ax-1re 8274 ax-addrcl 8277 ax-0lt1 8286 ax-0id 8288 ax-rnegex 8289 ax-pre-ltirr 8292 ax-pre-lttrn 8294 ax-pre-ltadd 8296 |
| This proof depends on definitions: df-bi 117 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-rab 2537 df-v 2823 df-dif 3222 df-un 3224 df-in 3226 df-ss 3233 df-pw 3690 df-sn 3715 df-pr 3716 df-op 3718 df-uni 3936 df-int 3971 df-br 4131 df-opab 4193 df-xp 4780 df-cnv 4782 df-iota 5337 df-fv 5385 df-ov 6088 df-pnf 8363 df-mnf 8364 df-xr 8365 df-ltxr 8366 df-le 8367 df-inn 9308 |
| This theorem is used by: nnle1eq1 9331 nngt0 9332 nnnlt1 9333 nnrecgt0 9345 nnge1d 9350 elnnnn0c 9613 elnnz1 9672 zltp1le 9704 nn0ledivnn 10179 elfz1b 10508 fzo1fzo0n0 10606 elfzom1elp1fzo 10631 fzo0sn0fzo1 10650 nnlesq 11094 faclbnd 11194 faclbnd3 11196 len0nnbi 11354 fstwrdne0 11359 cvgratz 12317 coprmgcdb 12884 isprm3 12914 pockthg 13158 ballotfilem2 13279 oddennn 13334 chtublem 16217 bposlem1 16233 gausslemma2dlem1a 16299 |
| Copyright terms: Public domain | W3C validator |