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| Mirrors > Home > ILE Home > Th. List > decnncl2 | GIF version | ||
| Description: Closure for a decimal integer (zero units place). (Contributed by Mario Carneiro, 17-Apr-2015.) (Revised by AV, 6-Sep-2021.) |
| Ref | Expression |
|---|---|
| decnncl2.1 | ⊢ 𝐴 ∈ ℕ |
| Ref | Expression |
|---|---|
| decnncl2 | ⊢ ;𝐴0 ∈ ℕ |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | dfdec10 9658 | . 2 ⊢ ;𝐴0 = ((;10 · 𝐴) + 0) | |
| 2 | 10nn 9670 | . . 3 ⊢ ;10 ∈ ℕ | |
| 3 | decnncl2.1 | . . 3 ⊢ 𝐴 ∈ ℕ | |
| 4 | 2, 3 | numnncl2 9677 | . 2 ⊢ ((;10 · 𝐴) + 0) ∈ ℕ |
| 5 | 1, 4 | eqeltri 2304 | 1 ⊢ ;𝐴0 ∈ ℕ |
| Colors of variables: wff set class |
| Syntax hints: ∈ wcel 2202 (class class class)co 6028 0cc0 8075 1c1 8076 + caddc 8078 · cmul 8080 ℕcn 9185 ;cdc 9655 |
| 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 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-ext 2213 ax-sep 4212 ax-cnex 8166 ax-resscn 8167 ax-1cn 8168 ax-1re 8169 ax-icn 8170 ax-addcl 8171 ax-addrcl 8172 ax-mulcl 8173 ax-mulcom 8176 ax-addass 8177 ax-mulass 8178 ax-distr 8179 ax-1rid 8182 ax-0id 8183 ax-cnre 8186 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 df-nf 1510 df-sb 1811 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2364 df-ral 2516 df-rex 2517 df-rab 2520 df-v 2805 df-un 3205 df-in 3207 df-ss 3214 df-sn 3679 df-pr 3680 df-op 3682 df-uni 3899 df-int 3934 df-br 4094 df-iota 5293 df-fv 5341 df-ov 6031 df-inn 9186 df-2 9244 df-3 9245 df-4 9246 df-5 9247 df-6 9248 df-7 9249 df-8 9250 df-9 9251 df-dec 9656 |
| This theorem is referenced by: 3dec 11022 |
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