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Mirrors > Home > ILE Home > Th. List > omex | Unicode version |
Description: The existence of omega (the class of natural numbers). Axiom 7 of [TakeutiZaring] p. 43. (Contributed by NM, 6-Aug-1994.) |
Ref | Expression |
---|---|
omex |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | zfinf2 4503 | . . 3 | |
2 | intexabim 4077 | . . 3 | |
3 | 1, 2 | ax-mp 5 | . 2 |
4 | dfom3 4506 | . . 3 | |
5 | 4 | eleq1i 2205 | . 2 |
6 | 3, 5 | mpbir 145 | 1 |
Colors of variables: wff set class |
Syntax hints: wa 103 wex 1468 wcel 1480 cab 2125 wral 2416 cvv 2686 c0 3363 cint 3771 csuc 4287 com 4504 |
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 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-17 1506 ax-i9 1510 ax-ial 1514 ax-i5r 1515 ax-ext 2121 ax-sep 4046 ax-iinf 4502 |
This theorem depends on definitions: df-bi 116 df-tru 1334 df-nf 1437 df-sb 1736 df-clab 2126 df-cleq 2132 df-clel 2135 df-nfc 2270 df-ral 2421 df-v 2688 df-in 3077 df-ss 3084 df-int 3772 df-iom 4505 |
This theorem is referenced by: peano5 4512 omelon 4522 frecex 6291 frecabex 6295 fict 6762 infnfi 6789 ominf 6790 inffiexmid 6800 omp1eom 6980 difinfsn 6985 0ct 6992 ctmlemr 6993 ctssdclemn0 6995 ctssdclemr 6997 ctssdc 6998 enumct 7000 omct 7002 ctfoex 7003 exmidlpo 7015 infnninf 7022 nnnninf 7023 niex 7120 enq0ex 7247 nq0ex 7248 uzenom 10198 frecfzennn 10199 nnenom 10207 fxnn0nninf 10211 0tonninf 10212 1tonninf 10213 inftonninf 10214 hashinfuni 10523 hashinfom 10524 xpct 11909 ennnfonelemj0 11914 ennnfonelemg 11916 ennnfonelemen 11934 ctiunct 11953 subctctexmid 13196 0nninf 13197 nnsf 13199 peano4nninf 13200 peano3nninf 13201 nninfex 13205 nninfself 13209 nninfsellemeq 13210 nninfsellemeqinf 13212 sbthom 13221 |
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