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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 9127 | . 2 ⊢ ((𝐴 ∈ ℕ ∧ 𝐵 ∈ ℕ) → (𝐴 · 𝐵) ∈ ℕ) | |
| 4 | 1, 2, 3 | syl2anc 411 | 1 ⊢ (𝜑 → (𝐴 · 𝐵) ∈ ℕ) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∈ wcel 2200 (class class class)co 6000 · cmul 8000 ℕcn 9106 |
| 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 714 ax-5 1493 ax-7 1494 ax-gen 1495 ax-ie1 1539 ax-ie2 1540 ax-8 1550 ax-10 1551 ax-11 1552 ax-i12 1553 ax-bndl 1555 ax-4 1556 ax-17 1572 ax-i9 1576 ax-ial 1580 ax-i5r 1581 ax-ext 2211 ax-sep 4201 ax-cnex 8086 ax-resscn 8087 ax-1cn 8088 ax-1re 8089 ax-icn 8090 ax-addcl 8091 ax-addrcl 8092 ax-mulcl 8093 ax-mulcom 8096 ax-addass 8097 ax-mulass 8098 ax-distr 8099 ax-1rid 8102 ax-cnre 8106 |
| This theorem depends on definitions: df-bi 117 df-3an 1004 df-tru 1398 df-nf 1507 df-sb 1809 df-clab 2216 df-cleq 2222 df-clel 2225 df-nfc 2361 df-ral 2513 df-rex 2514 df-rab 2517 df-v 2801 df-un 3201 df-in 3203 df-ss 3210 df-sn 3672 df-pr 3673 df-op 3675 df-uni 3888 df-int 3923 df-br 4083 df-iota 5277 df-fv 5325 df-ov 6003 df-inn 9107 |
| This theorem is referenced by: qbtwnre 10471 bcval 10966 bcm1k 10977 bcp1n 10978 permnn 10988 cvg1nlemcxze 11488 cvg1nlemf 11489 cvg1nlemcau 11490 cvg1nlemres 11491 trireciplem 12006 efaddlem 12180 eftlub 12196 eirraplem 12283 modmulconst 12329 lcmval 12580 oddpwdclemxy 12686 oddpwdclemdc 12690 sqpweven 12692 2sqpwodd 12693 crth 12741 phimullem 12742 modprm0 12772 pcqmul 12821 pcaddlem 12857 pcbc 12869 oddprmdvds 12872 pockthlem 12874 pockthg 12875 4sqlem13m 12921 4sqlem14 12922 4sqlem17 12925 4sqlem18 12926 evenennn 12959 mpodvdsmulf1o 15658 fsumdvdsmul 15659 sgmmul 15664 gausslemma2dlem1a 15731 lgseisenlem2 15744 lgseisenlem4 15746 lgsquadlemsfi 15748 lgsquadlem2 15751 lgsquadlem3 15752 lgsquad2lem2 15755 2sqlem6 15793 |
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