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| Mirrors > Home > ILE Home > Th. List > numnncl2 | GIF version | ||
| Description: Closure for a decimal integer (zero units place). (Contributed by Mario Carneiro, 9-Mar-2015.) |
| Ref | Expression |
|---|---|
| numnncl2.1 | ⊢ 𝑇 ∈ ℕ |
| numnncl2.2 | ⊢ 𝐴 ∈ ℕ |
| Ref | Expression |
|---|---|
| numnncl2 | ⊢ ((𝑇 · 𝐴) + 0) ∈ ℕ |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | numnncl2.1 | . . . . 5 ⊢ 𝑇 ∈ ℕ | |
| 2 | numnncl2.2 | . . . . 5 ⊢ 𝐴 ∈ ℕ | |
| 3 | 1, 2 | nnmulcli 9309 | . . . 4 ⊢ (𝑇 · 𝐴) ∈ ℕ |
| 4 | 3 | nncni 9297 | . . 3 ⊢ (𝑇 · 𝐴) ∈ ℂ |
| 5 | 4 | addridi 8462 | . 2 ⊢ ((𝑇 · 𝐴) + 0) = (𝑇 · 𝐴) |
| 6 | 5, 3 | eqeltri 2311 | 1 ⊢ ((𝑇 · 𝐴) + 0) ∈ ℕ |
| Colors of variables: wff set class |
| Syntax hints: ∈ wcel 2209 (class class class)co 6079 0cc0 8173 + caddc 8176 · cmul 8178 ℕcn 9287 |
| 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 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 4247 ax-cnex 8264 ax-resscn 8265 ax-1cn 8266 ax-1re 8267 ax-icn 8268 ax-addcl 8269 ax-addrcl 8270 ax-mulcl 8271 ax-mulcom 8274 ax-addass 8275 ax-mulass 8276 ax-distr 8277 ax-1rid 8280 ax-0id 8281 ax-cnre 8284 |
| This theorem 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 3714 df-pr 3715 df-op 3717 df-uni 3934 df-int 3969 df-br 4129 df-iota 5335 df-fv 5383 df-ov 6082 df-inn 9288 |
| This theorem is referenced by: decnncl2 9783 |
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