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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 9327 | . 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 |
| This proof depends on syntax axioms: → wi 4 ∈ wcel 2209 (class class class)co 6085 · cmul 8184 ℕcn 9306 |
| This proof depends on 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 4249 ax-cnex 8270 ax-resscn 8271 ax-1cn 8272 ax-1re 8273 ax-icn 8274 ax-addcl 8275 ax-addrcl 8276 ax-mulcl 8277 ax-mulcom 8280 ax-addass 8281 ax-mulass 8282 ax-distr 8283 ax-1rid 8286 ax-cnre 8290 |
| This proof 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 3715 df-pr 3716 df-op 3718 df-uni 3936 df-int 3971 df-br 4131 df-iota 5337 df-fv 5385 df-ov 6088 df-inn 9307 |
| This theorem is used by: qbtwnre 10701 bcval 11201 bcm1k 11212 bcp1n 11213 permnn 11224 cvg1nlemcxze 11762 cvg1nlemf 11763 cvg1nlemcau 11764 cvg1nlemres 11765 trireciplem 12283 efaddlem 12457 eftlub 12473 eirraplem 12560 modmulconst 12606 lcmval 12857 nnmaxpwlemxy 12964 nnmaxpwlemparts 12968 sqpweven 12971 2sqpwodd 12972 crth 13022 phimullem 13023 modprm0 13053 pcqmul 13102 pcaddlem 13138 pcbc 13150 oddprmdvds 13153 pockthlem 13155 pockthg 13156 4sqlem13m 13202 4sqlem14 13203 4sqlem17 13206 4sqlem18 13207 evenennn 13333 zprmlogbaplem3 16136 log2tlbndlog2 16139 log2ublem2 16141 log2ublog2 16143 mpodvdsmulf1o 16185 fsumdvdsmul 16186 sgmmul 16191 bcmono 16202 bposlem3 16211 bposlem5 16213 gausslemma2dlem1a 16275 lgseisenlem2 16288 lgseisenlem4 16290 lgsquadlemsfi 16292 lgsquadlem2 16295 lgsquadlem3 16296 lgsquad2lem2 16299 2sqlem6 16337 |
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