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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 9165 | . . . 4 ⊢ (𝑇 · 𝐴) ∈ ℕ |
| 4 | 3 | nncni 9153 | . . 3 ⊢ (𝑇 · 𝐴) ∈ ℂ |
| 5 | 4 | addridi 8321 | . 2 ⊢ ((𝑇 · 𝐴) + 0) = (𝑇 · 𝐴) |
| 6 | 5, 3 | eqeltri 2304 | 1 ⊢ ((𝑇 · 𝐴) + 0) ∈ ℕ |
| Colors of variables: wff set class |
| Syntax hints: ∈ wcel 2202 (class class class)co 6018 0cc0 8032 + caddc 8035 · cmul 8037 ℕcn 9143 |
| 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 716 ax-5 1495 ax-7 1496 ax-gen 1497 ax-ie1 1541 ax-ie2 1542 ax-8 1552 ax-10 1553 ax-11 1554 ax-i12 1555 ax-bndl 1557 ax-4 1558 ax-17 1574 ax-i9 1578 ax-ial 1582 ax-i5r 1583 ax-ext 2213 ax-sep 4207 ax-cnex 8123 ax-resscn 8124 ax-1cn 8125 ax-1re 8126 ax-icn 8127 ax-addcl 8128 ax-addrcl 8129 ax-mulcl 8130 ax-mulcom 8133 ax-addass 8134 ax-mulass 8135 ax-distr 8136 ax-1rid 8139 ax-0id 8140 ax-cnre 8143 |
| This theorem depends on definitions: df-bi 117 df-3an 1006 df-tru 1400 df-nf 1509 df-sb 1811 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2363 df-ral 2515 df-rex 2516 df-rab 2519 df-v 2804 df-un 3204 df-in 3206 df-ss 3213 df-sn 3675 df-pr 3676 df-op 3678 df-uni 3894 df-int 3929 df-br 4089 df-iota 5286 df-fv 5334 df-ov 6021 df-inn 9144 |
| This theorem is referenced by: decnncl2 9634 |
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