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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 9298 |
. 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 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-ext 2220 ax-sep 4247 ax-cnex 8263 ax-resscn 8264 ax-1re 8266 ax-addrcl 8269 |
| This theorem depends on definitions: df-bi 117 df-3an 1011 df-tru 1405 df-nf 1514 df-sb 1816 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ral 2533 df-rex 2534 df-v 2823 df-un 3224 df-in 3226 df-ss 3233 df-sn 3714 df-pr 3715 df-op 3717 df-uni 3934 df-int 3969 df-br 4129 df-iota 5335 df-fv 5383 df-ov 6081 df-inn 9287 |
| This theorem is referenced by: exp3vallem 10958 bcpasc 11185 caucvgre 11728 resqrexlemdecn 11759 cvgratnnlemmn 12273 cvgratnnlemseq 12274 cvgratnnlemabsle 12275 eftlub 12438 eirraplem 12525 infpnlem1 13119 infpnlem2 13120 1arith 13127 oddennn 13264 exmidunben 13298 nninfdclemp1 13322 nninfdclemlt 13323 perfectlem1 16030 perfectlem2 16031 lgsdilem2 16072 cvgcmp2nlemabs 16989 trilpolemeq1 16997 trilpolemlt1 16998 nconstwlpolemgt0 17022 |
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