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| Mirrors > Home > ILE Home > Th. List > 6nn | Unicode version | ||
| Description: 6 is a positive integer. (Contributed by Mario Carneiro, 15-Sep-2013.) |
| Ref | Expression |
|---|---|
| 6nn |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-6 9369 |
. 2
| |
| 2 | 5nn 9473 |
. . 3
| |
| 3 | peano2nn 9318 |
. . 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 4249 ax-cnex 8270 ax-resscn 8271 ax-1re 8273 ax-addrcl 8276 |
| 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 3715 df-pr 3716 df-op 3718 df-uni 3936 df-int 3971 df-br 4131 df-iota 5337 df-fv 5385 df-ov 6088 df-inn 9307 df-2 9365 df-3 9366 df-4 9367 df-5 9368 df-6 9369 |
| This theorem is used by: 7nn 9475 6nn0 9588 ef01bndlem 12539 sin01bnd 12540 cos01bnd 12541 6gcd4e2 12788 6lcm4e12 12881 83prm 13257 139prm 13258 163prm 13259 vscandx 13560 vscaid 13561 vscaslid 13566 lmodstrd 13567 ipsstrd 13579 psrvalstrd 15101 sincos3rdpi 15994 pigt3 15995 log2ublog2 16143 ppiublem1 16192 ppiublem2 16193 ppiqub 16194 bpos1 16208 ex-dvds 16842 ex-gcd 16843 |
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