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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 9206 |
. 2
| |
| 2 | 5nn 9308 |
. . 3
| |
| 3 | peano2nn 9155 |
. . 3
| |
| 4 | 2, 3 | ax-mp 5 |
. 2
|
| 5 | 1, 4 | eqeltri 2304 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 716 ax-5 1495 ax-7 1496 ax-gen 1497 ax-ie1 1541 ax-ie2 1542 ax-8 1552 ax-10 1553 ax-11 1554 ax-i12 1555 ax-bndl 1557 ax-4 1558 ax-17 1574 ax-i9 1578 ax-ial 1582 ax-i5r 1583 ax-ext 2213 ax-sep 4207 ax-cnex 8123 ax-resscn 8124 ax-1re 8126 ax-addrcl 8129 |
| This theorem depends on definitions: df-bi 117 df-3an 1006 df-tru 1400 df-nf 1509 df-sb 1811 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2363 df-ral 2515 df-rex 2516 df-v 2804 df-un 3204 df-in 3206 df-ss 3213 df-sn 3675 df-pr 3676 df-op 3678 df-uni 3894 df-int 3929 df-br 4089 df-iota 5286 df-fv 5334 df-ov 6021 df-inn 9144 df-2 9202 df-3 9203 df-4 9204 df-5 9205 df-6 9206 |
| This theorem is referenced by: 7nn 9310 6nn0 9423 ef01bndlem 12318 sin01bnd 12319 cos01bnd 12320 6gcd4e2 12567 6lcm4e12 12660 vscandx 13241 vscaid 13242 vscaslid 13247 lmodstrd 13248 ipsstrd 13260 psrvalstrd 14684 sincos3rdpi 15569 pigt3 15570 ex-dvds 16329 ex-gcd 16330 |
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