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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 12231 | . 2 ⊢ 𝐴 ∈ ℂ |
| 3 | mulcomnni.2 | . . 3 ⊢ 𝐵 ∈ ℕ | |
| 4 | 3 | nncni 12231 | . 2 ⊢ 𝐵 ∈ ℂ |
| 5 | 2, 4 | mulcomi 11205 | 1 ⊢ (𝐴 · 𝐵) = (𝐵 · 𝐴) |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1563 ∈ wcel 2145 (class class class)co 7400 · cmul 11093 ℕcn 12221 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1818 ax-4 1832 ax-5 1933 ax-6 1990 ax-7 2031 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2215 ax-ext 2737 ax-sep 5250 ax-nul 5260 ax-pr 5394 ax-un 7722 ax-1cn 11146 ax-addcl 11148 ax-mulcom 11152 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1102 df-3an 1103 df-tru 1566 df-fal 1576 df-ex 1803 df-nf 1807 df-sb 2094 df-mo 2569 df-eu 2599 df-clab 2744 df-cleq 2757 df-clel 2840 df-nfc 2914 df-ne 2961 df-ral 3080 df-rex 3090 df-reu 3371 df-rab 3418 df-v 3459 df-sbc 3748 df-csb 3856 df-dif 3910 df-un 3912 df-in 3914 df-ss 3924 df-pss 3927 df-nul 4289 df-if 4484 df-pw 4560 df-sn 4586 df-pr 4588 df-op 4592 df-uni 4868 df-iun 4953 df-br 5105 df-opab 5167 df-mpt 5186 df-tr 5212 df-id 5546 df-eprel 5551 df-po 5559 df-so 5560 df-fr 5604 df-we 5606 df-xp 5657 df-rel 5658 df-cnv 5659 df-co 5660 df-dm 5661 df-rn 5662 df-res 5663 df-ima 5664 df-pred 6291 df-ord 6352 df-on 6353 df-lim 6354 df-suc 6355 df-iota 6481 df-fun 6527 df-fn 6528 df-f 6529 df-f1 6530 df-fo 6531 df-f1o 6532 df-fv 6533 df-ov 7403 df-om 7851 df-2nd 7975 df-frecs 8266 df-wrecs 8297 df-recs 8346 df-rdg 8385 df-nn 12222 |
| This theorem is referenced by: 12gcd5e1 42627 60gcd6e6 42628 420gcd8e4 42630 lcmeprodgcdi 42631 60lcm6e60 42633 420lcm8e840 42635 |
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