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| Mirrors > Home > ILE Home > Th. List > nn0mulcld | GIF version | ||
| Description: Closure of multiplication of nonnegative integers, inference form. (Contributed by Mario Carneiro, 27-May-2016.) |
| Ref | Expression |
|---|---|
| nn0red.1 | ⊢ (𝜑 → 𝐴 ∈ ℕ0) |
| nn0addcld.2 | ⊢ (𝜑 → 𝐵 ∈ ℕ0) |
| Ref | Expression |
|---|---|
| nn0mulcld | ⊢ (𝜑 → (𝐴 · 𝐵) ∈ ℕ0) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | nn0red.1 | . 2 ⊢ (𝜑 → 𝐴 ∈ ℕ0) | |
| 2 | nn0addcld.2 | . 2 ⊢ (𝜑 → 𝐵 ∈ ℕ0) | |
| 3 | nn0mulcl 9610 | . 2 ⊢ ((𝐴 ∈ ℕ0 ∧ 𝐵 ∈ ℕ0) → (𝐴 · 𝐵) ∈ ℕ0) | |
| 4 | 1, 2, 3 | syl2anc 415 | 1 ⊢ (𝜑 → (𝐴 · 𝐵) ∈ ℕ0) |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: → wi 4 ∈ wcel 2209 (class class class)co 6088 · cmul 8190 ℕ0cn0 9574 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 623 ax-in2 624 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-14 2212 ax-ext 2220 ax-sep 4251 ax-pow 4313 ax-pr 4348 ax-setind 4686 ax-cnex 8276 ax-resscn 8277 ax-1cn 8278 ax-1re 8279 ax-icn 8280 ax-addcl 8281 ax-addrcl 8282 ax-mulcl 8283 ax-addcom 8285 ax-mulcom 8286 ax-addass 8287 ax-mulass 8288 ax-distr 8289 ax-i2m1 8290 ax-1rid 8292 ax-0id 8293 ax-rnegex 8294 ax-cnre 8296 |
| This proof depends on definitions: df-bi 117 df-3an 1011 df-tru 1405 df-fal 1408 df-nf 1514 df-sb 1816 df-eu 2089 df-mo 2090 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ne 2421 df-ral 2533 df-rex 2534 df-reu 2535 df-rab 2537 df-v 2823 df-sbc 3052 df-dif 3222 df-un 3224 df-in 3226 df-ss 3233 df-pw 3690 df-sn 3715 df-pr 3716 df-op 3718 df-uni 3936 df-int 3971 df-br 4132 df-opab 4194 df-id 4440 df-xp 4782 df-rel 4783 df-cnv 4784 df-co 4785 df-dm 4786 df-iota 5340 df-fun 5382 df-fv 5388 df-riota 6041 df-ov 6091 df-oprab 6092 df-mpo 6093 df-sub 8506 df-inn 9314 df-n0 9575 |
| This theorem is used by: expmulzap 11043 nn0opthlem1d 11180 nn0opthd 11182 oddge22np1 12673 mulgcd 12818 rpmulgcd2 12898 sqpweven 12980 2sqpwodd 12981 hashgcdlem 13045 odzdvds 13053 log2tlbndlog2 16220 2lgslem1c 16414 2lgslem3a 16417 2lgslem3b 16418 2lgslem3c 16419 2lgslem3d 16420 |
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