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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 9133 |
. 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 4202 ax-cnex 8101 ax-resscn 8102 ax-1re 8104 ax-addrcl 8107 |
| 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 2801 df-un 3201 df-in 3203 df-ss 3210 df-sn 3672 df-pr 3673 df-op 3675 df-uni 3889 df-int 3924 df-br 4084 df-iota 5278 df-fv 5326 df-ov 6010 df-inn 9122 |
| This theorem is referenced by: exp3vallem 10774 bcpasc 11000 caucvgre 11508 resqrexlemdecn 11539 cvgratnnlemmn 12052 cvgratnnlemseq 12053 cvgratnnlemabsle 12054 eftlub 12217 eirraplem 12304 infpnlem1 12898 infpnlem2 12899 1arith 12906 oddennn 12979 exmidunben 13013 nninfdclemp1 13037 nninfdclemlt 13038 perfectlem1 15689 perfectlem2 15690 lgsdilem2 15731 cvgcmp2nlemabs 16488 trilpolemeq1 16496 trilpolemlt1 16497 nconstwlpolemgt0 16520 |
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