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| Mirrors > Home > ILE Home > Th. List > decnncl | GIF version | ||
| Description: Closure for a numeral. (Contributed by Mario Carneiro, 17-Apr-2015.) (Revised by AV, 6-Sep-2021.) |
| Ref | Expression |
|---|---|
| decnncl.1 | ⊢ 𝐴 ∈ ℕ0 |
| decnncl.2 | ⊢ 𝐵 ∈ ℕ |
| Ref | Expression |
|---|---|
| decnncl | ⊢ ;𝐴𝐵 ∈ ℕ |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | dfdec10 9780 | . 2 ⊢ ;𝐴𝐵 = ((;10 · 𝐴) + 𝐵) | |
| 2 | 10nn0 9794 | . . 3 ⊢ ;10 ∈ ℕ0 | |
| 3 | decnncl.1 | . . 3 ⊢ 𝐴 ∈ ℕ0 | |
| 4 | decnncl.2 | . . 3 ⊢ 𝐵 ∈ ℕ | |
| 5 | 2, 3, 4 | numnncl 9786 | . 2 ⊢ ((;10 · 𝐴) + 𝐵) ∈ ℕ |
| 6 | 1, 5 | eqeltri 2311 | 1 ⊢ ;𝐴𝐵 ∈ 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 · cmul 8184 ℕcn 9304 ℕ0cn0 9563 ;cdc 9777 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 623 ax-in2 624 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-14 2212 ax-ext 2220 ax-sep 4249 ax-pow 4311 ax-pr 4346 ax-setind 4684 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-addcom 8279 ax-mulcom 8280 ax-addass 8281 ax-mulass 8282 ax-distr 8283 ax-i2m1 8284 ax-1rid 8286 ax-0id 8287 ax-rnegex 8288 ax-cnre 8290 |
| This proof depends on definitions: df-bi 117 df-3an 1011 df-tru 1405 df-fal 1408 df-nf 1514 df-sb 1816 df-eu 2089 df-mo 2090 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ne 2421 df-ral 2533 df-rex 2534 df-reu 2535 df-rab 2537 df-v 2823 df-sbc 3052 df-dif 3222 df-un 3224 df-in 3226 df-ss 3233 df-pw 3690 df-sn 3715 df-pr 3716 df-op 3718 df-uni 3936 df-int 3971 df-br 4131 df-opab 4193 df-id 4438 df-xp 4780 df-rel 4781 df-cnv 4782 df-co 4783 df-dm 4784 df-iota 5337 df-fun 5379 df-fv 5385 df-riota 6038 df-ov 6088 df-oprab 6089 df-mpo 6090 df-sub 8499 df-inn 9305 df-2 9363 df-3 9364 df-4 9365 df-5 9366 df-6 9367 df-7 9368 df-8 9369 df-9 9370 df-n0 9564 df-dec 9778 |
| This theorem is used by: ocndx 13565 ocid 13566 dsndx 13569 dsid 13570 dsslid 13571 dsndxnn 13572 unifndx 13580 unifid 13581 unifndxnn 13582 slotsdifunifndx 13586 homndx 13587 homid 13588 homslid 13589 ccondx 13590 ccoid 13591 ccoslid 13592 imasvalstrd 13619 prdsvalstrd 13620 cnfldstr 14895 log2ublog2 16086 birthdaylog2 16090 edgfid 16247 edgfndx 16248 edgfndxnn 16249 |
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