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| 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 4097 |
. 2
| |
| 2 | breq2 4097 |
. 2
| |
| 3 | breq2 4097 |
. 2
| |
| 4 | breq2 4097 |
. 2
| |
| 5 | 1le1 8811 |
. 2
| |
| 6 | nnre 9209 |
. . 3
| |
| 7 | recn 8225 |
. . . . . 6
| |
| 8 | 7 | addridd 8387 |
. . . . 5
|
| 9 | 8 | breq2d 4105 |
. . . 4
|
| 10 | 0lt1 8365 |
. . . . . . . 8
| |
| 11 | 0re 8239 |
. . . . . . . . 9
| |
| 12 | 1re 8238 |
. . . . . . . . 9
| |
| 13 | axltadd 8308 |
. . . . . . . . 9
| |
| 14 | 11, 12, 13 | mp3an12 1364 |
. . . . . . . 8
|
| 15 | 10, 14 | mpi 15 |
. . . . . . 7
|
| 16 | readdcl 8218 |
. . . . . . . . 9
| |
| 17 | 11, 16 | mpan2 425 |
. . . . . . . 8
|
| 18 | peano2re 8374 |
. . . . . . . 8
| |
| 19 | lttr 8312 |
. . . . . . . . 9
| |
| 20 | 12, 19 | mp3an3 1363 |
. . . . . . . 8
|
| 21 | 17, 18, 20 | syl2anc 411 |
. . . . . . 7
|
| 22 | 15, 21 | mpand 429 |
. . . . . 6
|
| 23 | 22 | con3d 636 |
. . . . 5
|
| 24 | lenlt 8314 |
. . . . . 6
| |
| 25 | 12, 17, 24 | sylancr 414 |
. . . . 5
|
| 26 | lenlt 8314 |
. . . . . 6
| |
| 27 | 12, 18, 26 | sylancr 414 |
. . . . 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 9218 |
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 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-13 2204 ax-14 2205 ax-ext 2213 ax-sep 4212 ax-pow 4270 ax-pr 4305 ax-un 4536 ax-setind 4641 ax-cnex 8183 ax-resscn 8184 ax-1re 8186 ax-addrcl 8189 ax-0lt1 8198 ax-0id 8200 ax-rnegex 8201 ax-pre-ltirr 8204 ax-pre-lttrn 8206 ax-pre-ltadd 8208 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 df-fal 1404 df-nf 1510 df-sb 1811 df-eu 2082 df-mo 2083 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2364 df-ne 2404 df-nel 2499 df-ral 2516 df-rex 2517 df-rab 2520 df-v 2805 df-dif 3203 df-un 3205 df-in 3207 df-ss 3214 df-pw 3658 df-sn 3679 df-pr 3680 df-op 3682 df-uni 3899 df-int 3934 df-br 4094 df-opab 4156 df-xp 4737 df-cnv 4739 df-iota 5293 df-fv 5341 df-ov 6031 df-pnf 8275 df-mnf 8276 df-xr 8277 df-ltxr 8278 df-le 8279 df-inn 9203 |
| This theorem is referenced by: nnle1eq1 9226 nngt0 9227 nnnlt1 9228 nnrecgt0 9240 nnge1d 9245 elnnnn0c 9506 elnnz1 9563 zltp1le 9595 nn0ledivnn 10063 elfz1b 10387 fzo1fzo0n0 10485 elfzom1elp1fzo 10510 fzo0sn0fzo1 10529 nnlesq 10968 faclbnd 11066 faclbnd3 11068 len0nnbi 11214 fstwrdne0 11219 cvgratz 12173 coprmgcdb 12740 isprm3 12770 pw2dvds 12818 pockthg 13010 oddennn 13093 gausslemma2dlem1a 15877 |
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