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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 9783 | . 2 ⊢ (9 + 1) = ;10 | |
| 2 | 9nn 9477 | . . 3 ⊢ 9 ∈ ℕ | |
| 3 | peano2nn 9318 | . . 3 ⊢ (9 ∈ ℕ → (9 + 1) ∈ ℕ) | |
| 4 | 2, 3 | ax-mp 5 | . 2 ⊢ (9 + 1) ∈ ℕ |
| 5 | 1, 4 | eqeltrri 2312 | 1 ⊢ ;10 ∈ ℕ |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: ∈ wcel 2209 (class class class)co 6085 0cc0 8179 1c1 8180 + caddc 8182 ℕcn 9306 9c9 9364 ;cdc 9781 |
| 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-1cn 8272 ax-1re 8273 ax-icn 8274 ax-addcl 8275 ax-addrcl 8276 ax-mulcl 8277 ax-mulcom 8280 ax-addass 8281 ax-mulass 8282 ax-distr 8283 ax-1rid 8286 ax-0id 8287 ax-cnre 8290 |
| 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-rab 2537 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 df-7 9370 df-8 9371 df-9 9372 df-dec 9782 |
| This theorem is used by: 10pos 9801 10re 9803 decnncl2 9809 declt 9813 decltc 9814 declti 9823 dec10p 9828 3dvds 12647 163prm 13259 631prm 13261 plendx 13603 pleid 13604 pleslid 13605 plendxnn 13606 imasvalstrd 13668 cnfldstr 14944 bclbnd 16205 |
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