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| Mirrors > Home > ILE Home > Th. List > nnmulcld | GIF version | ||
| Description: Closure of multiplication of positive integers. (Contributed by Mario Carneiro, 27-May-2016.) |
| Ref | Expression |
|---|---|
| nnge1d.1 | ⊢ (𝜑 → 𝐴 ∈ ℕ) |
| nnmulcld.2 | ⊢ (𝜑 → 𝐵 ∈ ℕ) |
| Ref | Expression |
|---|---|
| nnmulcld | ⊢ (𝜑 → (𝐴 · 𝐵) ∈ ℕ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | nnge1d.1 | . 2 ⊢ (𝜑 → 𝐴 ∈ ℕ) | |
| 2 | nnmulcld.2 | . 2 ⊢ (𝜑 → 𝐵 ∈ ℕ) | |
| 3 | nnmulcl 9304 | . 2 ⊢ ((𝐴 ∈ ℕ ∧ 𝐵 ∈ ℕ) → (𝐴 · 𝐵) ∈ ℕ) | |
| 4 | 1, 2, 3 | syl2anc 415 | 1 ⊢ (𝜑 → (𝐴 · 𝐵) ∈ ℕ) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∈ wcel 2209 (class class class)co 6075 · cmul 8174 ℕcn 9283 |
| 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 4244 ax-cnex 8260 ax-resscn 8261 ax-1cn 8262 ax-1re 8263 ax-icn 8264 ax-addcl 8265 ax-addrcl 8266 ax-mulcl 8267 ax-mulcom 8270 ax-addass 8271 ax-mulass 8272 ax-distr 8273 ax-1rid 8276 ax-cnre 8280 |
| 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 3711 df-pr 3712 df-op 3714 df-uni 3931 df-int 3966 df-br 4126 df-iota 5332 df-fv 5380 df-ov 6078 df-inn 9284 |
| This theorem is referenced by: qbtwnre 10669 bcval 11165 bcm1k 11176 bcp1n 11177 permnn 11188 cvg1nlemcxze 11726 cvg1nlemf 11727 cvg1nlemcau 11728 cvg1nlemres 11729 trireciplem 12245 efaddlem 12419 eftlub 12435 eirraplem 12522 modmulconst 12568 lcmval 12819 oddpwdclemxy 12925 oddpwdclemdc 12929 sqpweven 12931 2sqpwodd 12932 crth 12980 phimullem 12981 modprm0 13011 pcqmul 13060 pcaddlem 13096 pcbc 13108 oddprmdvds 13111 pockthlem 13113 pockthg 13114 4sqlem13m 13160 4sqlem14 13161 4sqlem17 13164 4sqlem18 13165 evenennn 13262 mpodvdsmulf1o 16018 fsumdvdsmul 16019 sgmmul 16024 gausslemma2dlem1a 16091 lgseisenlem2 16104 lgseisenlem4 16106 lgsquadlemsfi 16108 lgsquadlem2 16111 lgsquadlem3 16112 lgsquad2lem2 16115 2sqlem6 16153 |
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