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Mirrors > Home > MPE Home > Th. List > nnmulcli | Structured version Visualization version GIF version |
Description: Closure of multiplication of positive integers. (Contributed by Mario Carneiro, 18-Feb-2014.) |
Ref | Expression |
---|---|
nnmulcli.1 | ⊢ 𝐴 ∈ ℕ |
nnmulcli.2 | ⊢ 𝐵 ∈ ℕ |
Ref | Expression |
---|---|
nnmulcli | ⊢ (𝐴 · 𝐵) ∈ ℕ |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | nnmulcli.1 | . 2 ⊢ 𝐴 ∈ ℕ | |
2 | nnmulcli.2 | . 2 ⊢ 𝐵 ∈ ℕ | |
3 | nnmulcl 11995 | . 2 ⊢ ((𝐴 ∈ ℕ ∧ 𝐵 ∈ ℕ) → (𝐴 · 𝐵) ∈ ℕ) | |
4 | 1, 2, 3 | mp2an 689 | 1 ⊢ (𝐴 · 𝐵) ∈ ℕ |
Colors of variables: wff setvar class |
Syntax hints: ∈ wcel 2106 (class class class)co 7277 · cmul 10874 ℕcn 11971 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2709 ax-sep 5225 ax-nul 5232 ax-pr 5354 ax-un 7588 ax-1cn 10927 ax-icn 10928 ax-addcl 10929 ax-addrcl 10930 ax-mulcl 10931 ax-mulrcl 10932 ax-addass 10934 ax-distr 10936 ax-i2m1 10937 ax-1ne0 10938 ax-1rid 10939 ax-rrecex 10941 ax-cnre 10942 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 845 df-3or 1087 df-3an 1088 df-tru 1542 df-fal 1552 df-ex 1783 df-nf 1787 df-sb 2068 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2816 df-nfc 2889 df-ne 2944 df-ral 3069 df-rex 3070 df-reu 3072 df-rab 3073 df-v 3433 df-sbc 3718 df-csb 3834 df-dif 3891 df-un 3893 df-in 3895 df-ss 3905 df-pss 3907 df-nul 4259 df-if 4462 df-pw 4537 df-sn 4564 df-pr 4566 df-op 4570 df-uni 4842 df-iun 4928 df-br 5077 df-opab 5139 df-mpt 5160 df-tr 5194 df-id 5491 df-eprel 5497 df-po 5505 df-so 5506 df-fr 5546 df-we 5548 df-xp 5597 df-rel 5598 df-cnv 5599 df-co 5600 df-dm 5601 df-rn 5602 df-res 5603 df-ima 5604 df-pred 6204 df-ord 6271 df-on 6272 df-lim 6273 df-suc 6274 df-iota 6393 df-fun 6437 df-fn 6438 df-f 6439 df-f1 6440 df-fo 6441 df-f1o 6442 df-fv 6443 df-ov 7280 df-om 7713 df-2nd 7832 df-frecs 8095 df-wrecs 8126 df-recs 8200 df-rdg 8239 df-nn 11972 |
This theorem is referenced by: numnncl2 12458 ef01bndlem 15891 pockthi 16606 dec5nprm 16765 dec2nprm 16766 log2ublem1 26094 log2ublem2 26095 log2ub 26097 bclbnd 26426 bposlem8 26437 lgsdir2lem5 26475 ex-lcm 28819 bgoldbachlt 45232 tgblthelfgott 45234 tgoldbachlt 45235 |
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