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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 9251 |
. 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 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-ext 2216 ax-sep 4230 ax-cnex 8220 ax-resscn 8221 ax-1re 8223 ax-addrcl 8226 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 df-nf 1510 df-sb 1812 df-clab 2221 df-cleq 2227 df-clel 2230 df-nfc 2375 df-ral 2527 df-rex 2528 df-v 2817 df-un 3217 df-in 3219 df-ss 3226 df-sn 3697 df-pr 3698 df-op 3700 df-uni 3917 df-int 3952 df-br 4112 df-iota 5314 df-fv 5362 df-ov 6055 df-inn 9240 |
| This theorem is referenced by: exp3vallem 10906 bcpasc 11132 caucvgre 11670 resqrexlemdecn 11701 cvgratnnlemmn 12215 cvgratnnlemseq 12216 cvgratnnlemabsle 12217 eftlub 12380 eirraplem 12467 infpnlem1 13061 infpnlem2 13062 1arith 13069 oddennn 13160 exmidunben 13194 nninfdclemp1 13218 nninfdclemlt 13219 perfectlem1 15884 perfectlem2 15885 lgsdilem2 15926 cvgcmp2nlemabs 16833 trilpolemeq1 16841 trilpolemlt1 16842 nconstwlpolemgt0 16867 |
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