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| Mirrors > Home > MPE Home > Th. List > Mathboxes > mulcomnni | Structured version Visualization version GIF version | ||
| Description: Commutative law for multiplication. (Contributed by metakunt, 25-Apr-2024.) |
| Ref | Expression |
|---|---|
| mulcomnni.1 | ⊢ 𝐴 ∈ ℕ |
| mulcomnni.2 | ⊢ 𝐵 ∈ ℕ |
| Ref | Expression |
|---|---|
| mulcomnni | ⊢ (𝐴 · 𝐵) = (𝐵 · 𝐴) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | mulcomnni.1 | . . 3 ⊢ 𝐴 ∈ ℕ | |
| 2 | 1 | nncni 12349 | . 2 ⊢ 𝐴 ∈ ℂ |
| 3 | mulcomnni.2 | . . 3 ⊢ 𝐵 ∈ ℕ | |
| 4 | 3 | nncni 12349 | . 2 ⊢ 𝐵 ∈ ℂ |
| 5 | 2, 4 | mulcomi 11321 | 1 ⊢ (𝐴 · 𝐵) = (𝐵 · 𝐴) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: = wceq 1569 ∈ wcel 2144 (class class class)co 7421 · cmul 11209 ℕcn 12339 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-10 2177 ax-11 2193 ax-12 2212 ax-ext 2732 ax-sep 5248 ax-nul 5259 ax-pr 5390 ax-un 7752 ax-1cn 11262 ax-addcl 11264 ax-mulcom 11268 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2099 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-ral 3077 df-rex 3087 df-reu 3366 df-rab 3413 df-v 3452 df-sbc 3739 df-csb 3847 df-ss 3896 df-pss 4014 df-dif 4047 df-in 4091 df-un 4151 df-nul 4279 df-if 4482 df-pw 4558 df-sn 4585 df-pr 4587 df-op 4835 df-uni 4867 df-iun 4952 df-br 5103 df-opab 5167 df-mpt 5186 df-tr 5212 df-id 5545 df-eprel 5550 df-po 5558 df-so 5559 df-fr 5603 df-we 5605 df-xp 5656 df-rel 5657 df-cnv 5658 df-co 5659 df-dm 5660 df-rn 5661 df-res 5662 df-ima 5663 df-pred 6304 df-ord 6365 df-on 6366 df-lim 6367 df-suc 6368 df-iota 6494 df-fun 6541 df-fn 6542 df-f 6543 df-f1 6544 df-fo 6545 df-f1o 6546 df-fv 6547 df-ov 7424 df-om 7879 df-2nd 8003 df-frecs 8303 df-wrecs 8334 df-recs 8383 df-rdg 8422 df-nn 12340 |
| This theorem is used by: 12gcd5e1 43147 60gcd6e6 43148 420gcd8e4 43150 lcmeprodgcdi 43151 60lcm6e60 43153 420lcm8e840 43155 |
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