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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 9264 | . . . 4 ⊢ (𝑇 · 𝐴) ∈ ℕ |
| 4 | 3 | nncni 9252 | . . 3 ⊢ (𝑇 · 𝐴) ∈ ℂ |
| 5 | 4 | addridi 8420 | . 2 ⊢ ((𝑇 · 𝐴) + 0) = (𝑇 · 𝐴) |
| 6 | 5, 3 | eqeltri 2307 | 1 ⊢ ((𝑇 · 𝐴) + 0) ∈ ℕ |
| Colors of variables: wff set class |
| Syntax hints: ∈ wcel 2205 (class class class)co 6052 0cc0 8132 + caddc 8135 · cmul 8137 ℕcn 9242 |
| 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 2216 ax-sep 4230 ax-cnex 8223 ax-resscn 8224 ax-1cn 8225 ax-1re 8226 ax-icn 8227 ax-addcl 8228 ax-addrcl 8229 ax-mulcl 8230 ax-mulcom 8233 ax-addass 8234 ax-mulass 8235 ax-distr 8236 ax-1rid 8239 ax-0id 8240 ax-cnre 8243 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 df-nf 1510 df-sb 1812 df-clab 2221 df-cleq 2227 df-clel 2230 df-nfc 2375 df-ral 2527 df-rex 2528 df-rab 2531 df-v 2817 df-un 3217 df-in 3219 df-ss 3226 df-sn 3697 df-pr 3698 df-op 3700 df-uni 3917 df-int 3952 df-br 4112 df-iota 5314 df-fv 5362 df-ov 6055 df-inn 9243 |
| This theorem is referenced by: decnncl2 9738 |
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