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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 11819 | . 2 ⊢ ((𝐴 ∈ ℕ ∧ 𝐵 ∈ ℕ) → (𝐴 · 𝐵) ∈ ℕ) | |
4 | 1, 2, 3 | mp2an 692 | 1 ⊢ (𝐴 · 𝐵) ∈ ℕ |
Colors of variables: wff setvar class |
Syntax hints: ∈ wcel 2112 (class class class)co 7191 · cmul 10699 ℕcn 11795 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1803 ax-4 1817 ax-5 1918 ax-6 1976 ax-7 2018 ax-8 2114 ax-9 2122 ax-10 2143 ax-11 2160 ax-12 2177 ax-ext 2708 ax-sep 5177 ax-nul 5184 ax-pr 5307 ax-un 7501 ax-1cn 10752 ax-icn 10753 ax-addcl 10754 ax-addrcl 10755 ax-mulcl 10756 ax-mulrcl 10757 ax-addass 10759 ax-distr 10761 ax-i2m1 10762 ax-1ne0 10763 ax-1rid 10764 ax-rrecex 10766 ax-cnre 10767 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 848 df-3or 1090 df-3an 1091 df-tru 1546 df-fal 1556 df-ex 1788 df-nf 1792 df-sb 2073 df-mo 2539 df-eu 2568 df-clab 2715 df-cleq 2728 df-clel 2809 df-nfc 2879 df-ne 2933 df-ral 3056 df-rex 3057 df-reu 3058 df-rab 3060 df-v 3400 df-sbc 3684 df-csb 3799 df-dif 3856 df-un 3858 df-in 3860 df-ss 3870 df-pss 3872 df-nul 4224 df-if 4426 df-pw 4501 df-sn 4528 df-pr 4530 df-tp 4532 df-op 4534 df-uni 4806 df-iun 4892 df-br 5040 df-opab 5102 df-mpt 5121 df-tr 5147 df-id 5440 df-eprel 5445 df-po 5453 df-so 5454 df-fr 5494 df-we 5496 df-xp 5542 df-rel 5543 df-cnv 5544 df-co 5545 df-dm 5546 df-rn 5547 df-res 5548 df-ima 5549 df-pred 6140 df-ord 6194 df-on 6195 df-lim 6196 df-suc 6197 df-iota 6316 df-fun 6360 df-fn 6361 df-f 6362 df-f1 6363 df-fo 6364 df-f1o 6365 df-fv 6366 df-ov 7194 df-om 7623 df-wrecs 8025 df-recs 8086 df-rdg 8124 df-nn 11796 |
This theorem is referenced by: numnncl2 12281 ef01bndlem 15708 pockthi 16423 dec5nprm 16582 dec2nprm 16583 log2ublem1 25783 log2ublem2 25784 log2ub 25786 bclbnd 26115 bposlem8 26126 lgsdir2lem5 26164 ex-lcm 28495 bgoldbachlt 44881 tgblthelfgott 44883 tgoldbachlt 44884 |
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