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| Mirrors > Home > ILE Home > Th. List > 10nn | GIF version | ||
| Description: 10 is a positive integer. (Contributed by NM, 8-Nov-2012.) (Revised by AV, 6-Sep-2021.) |
| Ref | Expression |
|---|---|
| 10nn | ⊢ ;10 ∈ ℕ |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 9p1e10 9543 | . 2 ⊢ (9 + 1) = ;10 | |
| 2 | 9nn 9242 | . . 3 ⊢ 9 ∈ ℕ | |
| 3 | peano2nn 9085 | . . 3 ⊢ (9 ∈ ℕ → (9 + 1) ∈ ℕ) | |
| 4 | 2, 3 | ax-mp 5 | . 2 ⊢ (9 + 1) ∈ ℕ |
| 5 | 1, 4 | eqeltrri 2281 | 1 ⊢ ;10 ∈ ℕ |
| Colors of variables: wff set class |
| Syntax hints: ∈ wcel 2178 (class class class)co 5969 0cc0 7962 1c1 7963 + caddc 7965 ℕcn 9073 9c9 9131 ;cdc 9541 |
| 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 711 ax-5 1471 ax-7 1472 ax-gen 1473 ax-ie1 1517 ax-ie2 1518 ax-8 1528 ax-10 1529 ax-11 1530 ax-i12 1531 ax-bndl 1533 ax-4 1534 ax-17 1550 ax-i9 1554 ax-ial 1558 ax-i5r 1559 ax-ext 2189 ax-sep 4179 ax-cnex 8053 ax-resscn 8054 ax-1cn 8055 ax-1re 8056 ax-icn 8057 ax-addcl 8058 ax-addrcl 8059 ax-mulcl 8060 ax-mulcom 8063 ax-addass 8064 ax-mulass 8065 ax-distr 8066 ax-1rid 8069 ax-0id 8070 ax-cnre 8073 |
| This theorem depends on definitions: df-bi 117 df-3an 983 df-tru 1376 df-nf 1485 df-sb 1787 df-clab 2194 df-cleq 2200 df-clel 2203 df-nfc 2339 df-ral 2491 df-rex 2492 df-rab 2495 df-v 2779 df-un 3179 df-in 3181 df-ss 3188 df-sn 3650 df-pr 3651 df-op 3653 df-uni 3866 df-int 3901 df-br 4061 df-iota 5252 df-fv 5299 df-ov 5972 df-inn 9074 df-2 9132 df-3 9133 df-4 9134 df-5 9135 df-6 9136 df-7 9137 df-8 9138 df-9 9139 df-dec 9542 |
| This theorem is referenced by: 10pos 9557 10re 9559 decnncl2 9564 declt 9568 decltc 9569 declti 9578 dec10p 9583 3dvds 12336 plendx 13193 pleid 13194 pleslid 13195 plendxnn 13196 imasvalstrd 13263 cnfldstr 14481 |
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