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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 4063 |
. 2
| |
| 2 | breq2 4063 |
. 2
| |
| 3 | breq2 4063 |
. 2
| |
| 4 | breq2 4063 |
. 2
| |
| 5 | 1le1 8680 |
. 2
| |
| 6 | nnre 9078 |
. . 3
| |
| 7 | recn 8093 |
. . . . . 6
| |
| 8 | 7 | addridd 8256 |
. . . . 5
|
| 9 | 8 | breq2d 4071 |
. . . 4
|
| 10 | 0lt1 8234 |
. . . . . . . 8
| |
| 11 | 0re 8107 |
. . . . . . . . 9
| |
| 12 | 1re 8106 |
. . . . . . . . 9
| |
| 13 | axltadd 8177 |
. . . . . . . . 9
| |
| 14 | 11, 12, 13 | mp3an12 1340 |
. . . . . . . 8
|
| 15 | 10, 14 | mpi 15 |
. . . . . . 7
|
| 16 | readdcl 8086 |
. . . . . . . . 9
| |
| 17 | 11, 16 | mpan2 425 |
. . . . . . . 8
|
| 18 | peano2re 8243 |
. . . . . . . 8
| |
| 19 | lttr 8181 |
. . . . . . . . 9
| |
| 20 | 12, 19 | mp3an3 1339 |
. . . . . . . 8
|
| 21 | 17, 18, 20 | syl2anc 411 |
. . . . . . 7
|
| 22 | 15, 21 | mpand 429 |
. . . . . 6
|
| 23 | 22 | con3d 632 |
. . . . 5
|
| 24 | lenlt 8183 |
. . . . . 6
| |
| 25 | 12, 17, 24 | sylancr 414 |
. . . . 5
|
| 26 | lenlt 8183 |
. . . . . 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 9087 |
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 615 ax-in2 616 ax-io 711 ax-5 1471 ax-7 1472 ax-gen 1473 ax-ie1 1517 ax-ie2 1518 ax-8 1528 ax-10 1529 ax-11 1530 ax-i12 1531 ax-bndl 1533 ax-4 1534 ax-17 1550 ax-i9 1554 ax-ial 1558 ax-i5r 1559 ax-13 2180 ax-14 2181 ax-ext 2189 ax-sep 4178 ax-pow 4234 ax-pr 4269 ax-un 4498 ax-setind 4603 ax-cnex 8051 ax-resscn 8052 ax-1re 8054 ax-addrcl 8057 ax-0lt1 8066 ax-0id 8068 ax-rnegex 8069 ax-pre-ltirr 8072 ax-pre-lttrn 8074 ax-pre-ltadd 8076 |
| This theorem depends on definitions: df-bi 117 df-3an 983 df-tru 1376 df-fal 1379 df-nf 1485 df-sb 1787 df-eu 2058 df-mo 2059 df-clab 2194 df-cleq 2200 df-clel 2203 df-nfc 2339 df-ne 2379 df-nel 2474 df-ral 2491 df-rex 2492 df-rab 2495 df-v 2778 df-dif 3176 df-un 3178 df-in 3180 df-ss 3187 df-pw 3628 df-sn 3649 df-pr 3650 df-op 3652 df-uni 3865 df-int 3900 df-br 4060 df-opab 4122 df-xp 4699 df-cnv 4701 df-iota 5251 df-fv 5298 df-ov 5970 df-pnf 8144 df-mnf 8145 df-xr 8146 df-ltxr 8147 df-le 8148 df-inn 9072 |
| This theorem is referenced by: nnle1eq1 9095 nngt0 9096 nnnlt1 9097 nnrecgt0 9109 nnge1d 9114 elnnnn0c 9375 elnnz1 9430 zltp1le 9462 nn0ledivnn 9924 elfz1b 10247 fzo1fzo0n0 10344 elfzom1elp1fzo 10368 fzo0sn0fzo1 10387 nnlesq 10825 faclbnd 10923 faclbnd3 10925 len0nnbi 11065 fstwrdne0 11070 cvgratz 11958 coprmgcdb 12525 isprm3 12555 pw2dvds 12603 pockthg 12795 oddennn 12878 gausslemma2dlem1a 15650 |
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