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Mirrors > Home > ILE Home > Th. List > 1onn | Unicode version |
Description: One is a natural number. (Contributed by NM, 29-Oct-1995.) |
Ref | Expression |
---|---|
1onn |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-1o 6306 | . 2 | |
2 | peano1 4503 | . . 3 | |
3 | peano2 4504 | . . 3 | |
4 | 2, 3 | ax-mp 5 | . 2 |
5 | 1, 4 | eqeltri 2210 | 1 |
Colors of variables: wff set class |
Syntax hints: wcel 1480 c0 3358 csuc 4282 com 4499 c1o 6299 |
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-in1 603 ax-in2 604 ax-io 698 ax-5 1423 ax-7 1424 ax-gen 1425 ax-ie1 1469 ax-ie2 1470 ax-8 1482 ax-10 1483 ax-11 1484 ax-i12 1485 ax-bndl 1486 ax-4 1487 ax-13 1491 ax-14 1492 ax-17 1506 ax-i9 1510 ax-ial 1514 ax-i5r 1515 ax-ext 2119 ax-sep 4041 ax-nul 4049 ax-pow 4093 ax-pr 4126 ax-un 4350 |
This theorem depends on definitions: df-bi 116 df-3an 964 df-tru 1334 df-nf 1437 df-sb 1736 df-clab 2124 df-cleq 2130 df-clel 2133 df-nfc 2268 df-ral 2419 df-rex 2420 df-v 2683 df-dif 3068 df-un 3070 df-in 3072 df-ss 3079 df-nul 3359 df-pw 3507 df-sn 3528 df-pr 3529 df-uni 3732 df-int 3767 df-suc 4288 df-iom 4500 df-1o 6306 |
This theorem is referenced by: 2onn 6410 nnm2 6414 nnaordex 6416 snfig 6701 snnen2og 6746 1nen2 6748 unfiexmid 6799 en1eqsn 6829 omp1eomlem 6972 fodjum 7011 fodju0 7012 en2eleq 7044 en2other2 7045 exmidfodomrlemr 7051 exmidfodomrlemrALT 7052 1pi 7116 1lt2pi 7141 archnqq 7218 nq0m0r 7257 nq02m 7266 prarloclemlt 7294 prarloclemlo 7295 1tonninf 10206 hash2 10551 pwle2 13182 peano3nninf 13190 nninfall 13193 nninfsellemdc 13195 nninfsellemeq 13199 nninfsellemeqinf 13201 nninffeq 13205 sbthom 13210 isomninnlem 13214 |
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