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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 8890 | . 2 | |
3 | 1, 2 | syl 14 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wcel 2141 (class class class)co 5853 c1 7775 caddc 7777 cn 8878 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-io 704 ax-5 1440 ax-7 1441 ax-gen 1442 ax-ie1 1486 ax-ie2 1487 ax-8 1497 ax-10 1498 ax-11 1499 ax-i12 1500 ax-bndl 1502 ax-4 1503 ax-17 1519 ax-i9 1523 ax-ial 1527 ax-i5r 1528 ax-ext 2152 ax-sep 4107 ax-cnex 7865 ax-resscn 7866 ax-1re 7868 ax-addrcl 7871 |
This theorem depends on definitions: df-bi 116 df-3an 975 df-tru 1351 df-nf 1454 df-sb 1756 df-clab 2157 df-cleq 2163 df-clel 2166 df-nfc 2301 df-ral 2453 df-rex 2454 df-v 2732 df-un 3125 df-in 3127 df-ss 3134 df-sn 3589 df-pr 3590 df-op 3592 df-uni 3797 df-int 3832 df-br 3990 df-iota 5160 df-fv 5206 df-ov 5856 df-inn 8879 |
This theorem is referenced by: exp3vallem 10477 bcpasc 10700 caucvgre 10945 resqrexlemdecn 10976 cvgratnnlemmn 11488 cvgratnnlemseq 11489 cvgratnnlemabsle 11490 eftlub 11653 eirraplem 11739 infpnlem1 12311 infpnlem2 12312 1arith 12319 oddennn 12347 exmidunben 12381 nninfdclemp1 12405 nninfdclemlt 12406 lgsdilem2 13731 cvgcmp2nlemabs 14064 trilpolemeq1 14072 trilpolemlt1 14073 nconstwlpolemgt0 14095 |
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