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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 9789 | . 2 ⊢ (9 + 1) = ;10 | |
| 2 | 9nn 9484 | . . 3 ⊢ 9 ∈ ℕ | |
| 3 | peano2nn 9325 | . . 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 6088 0cc0 8185 1c1 8186 + caddc 8188 ℕcn 9313 9c9 9371 ;cdc 9787 |
| 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 4251 ax-cnex 8276 ax-resscn 8277 ax-1cn 8278 ax-1re 8279 ax-icn 8280 ax-addcl 8281 ax-addrcl 8282 ax-mulcl 8283 ax-mulcom 8286 ax-addass 8287 ax-mulass 8288 ax-distr 8289 ax-1rid 8292 ax-0id 8293 ax-cnre 8296 |
| 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 4132 df-iota 5340 df-fv 5388 df-ov 6091 df-inn 9314 df-2 9372 df-3 9373 df-4 9374 df-5 9375 df-6 9376 df-7 9377 df-8 9378 df-9 9379 df-dec 9788 |
| This theorem is used by: 10pos 9807 10re 9809 decnncl2 9815 declt 9819 decltc 9820 declti 9829 dec10p 9834 3dvds 12655 163prm 13267 631prm 13269 plendx 13612 pleid 13613 pleslid 13614 plendxnn 13615 imasvalstrd 13677 cnfldstr 15003 bclbnd 16324 |
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