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| Mirrors > Home > ILE Home > Th. List > peano2nnd | Unicode version | ||
| Description: Peano postulate: a successor of a positive integer is a positive integer. (Contributed by Mario Carneiro, 27-May-2016.) |
| Ref | Expression |
|---|---|
| nnred.1 |
|
| Ref | Expression |
|---|---|
| peano2nnd |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | nnred.1 |
. 2
| |
| 2 | peano2nn 9145 |
. 2
| |
| 3 | 1, 2 | syl 14 |
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-io 714 ax-5 1493 ax-7 1494 ax-gen 1495 ax-ie1 1539 ax-ie2 1540 ax-8 1550 ax-10 1551 ax-11 1552 ax-i12 1553 ax-bndl 1555 ax-4 1556 ax-17 1572 ax-i9 1576 ax-ial 1580 ax-i5r 1581 ax-ext 2211 ax-sep 4205 ax-cnex 8113 ax-resscn 8114 ax-1re 8116 ax-addrcl 8119 |
| This theorem depends on definitions: df-bi 117 df-3an 1004 df-tru 1398 df-nf 1507 df-sb 1809 df-clab 2216 df-cleq 2222 df-clel 2225 df-nfc 2361 df-ral 2513 df-rex 2514 df-v 2802 df-un 3202 df-in 3204 df-ss 3211 df-sn 3673 df-pr 3674 df-op 3676 df-uni 3892 df-int 3927 df-br 4087 df-iota 5284 df-fv 5332 df-ov 6016 df-inn 9134 |
| This theorem is referenced by: exp3vallem 10792 bcpasc 11018 caucvgre 11532 resqrexlemdecn 11563 cvgratnnlemmn 12076 cvgratnnlemseq 12077 cvgratnnlemabsle 12078 eftlub 12241 eirraplem 12328 infpnlem1 12922 infpnlem2 12923 1arith 12930 oddennn 13003 exmidunben 13037 nninfdclemp1 13061 nninfdclemlt 13062 perfectlem1 15713 perfectlem2 15714 lgsdilem2 15755 cvgcmp2nlemabs 16572 trilpolemeq1 16580 trilpolemlt1 16581 nconstwlpolemgt0 16604 |
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