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| Mirrors > Home > ILE Home > Th. List > 5nn | Unicode version | ||
| Description: 5 is a positive integer. (Contributed by Mario Carneiro, 15-Sep-2013.) |
| Ref | Expression |
|---|---|
| 5nn |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-5 9349 |
. 2
| |
| 2 | 4nn 9451 |
. . 3
| |
| 3 | peano2nn 9299 |
. . 3
| |
| 4 | 2, 3 | ax-mp 5 |
. 2
|
| 5 | 1, 4 | eqeltri 2311 |
1
|
| Colors of variables: wff set class |
| This proof depends on syntax axioms:
|
| This proof depends on 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 8264 ax-resscn 8265 ax-1re 8267 ax-addrcl 8270 |
| This proof 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 6082 df-inn 9288 df-2 9346 df-3 9347 df-4 9348 df-5 9349 |
| This theorem is used by: 6nn 9453 5nn0 9566 5eluz3 9944 5ndvds3 12684 5ndvds6 12685 prm23ge5 13026 dec5dvds 13174 dec5nprm 13176 dec2nprm 13177 scandx 13488 scaid 13489 scaslid 13490 lmodstrd 13501 ipsstrd 13513 ccondx 13573 ccoid 13574 ccoslid 13575 prdsvalstrd 13603 psrvalstrd 15035 log2ublem1 16066 log2ublem2 16067 log2ublog2 16069 birthdaylog2 16073 lgsdir2lem1 16130 lgsdir2lem3 16132 |
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