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Mirrors > Home > MPE Home > Th. List > Mathboxes > decpmul | Structured version Visualization version GIF version |
Description: Partial products algorithm for two digit multiplication. (Contributed by Steven Nguyen, 10-Dec-2022.) |
Ref | Expression |
---|---|
decpmulnc.a | ⊢ 𝐴 ∈ ℕ0 |
decpmulnc.b | ⊢ 𝐵 ∈ ℕ0 |
decpmulnc.c | ⊢ 𝐶 ∈ ℕ0 |
decpmulnc.d | ⊢ 𝐷 ∈ ℕ0 |
decpmulnc.1 | ⊢ (𝐴 · 𝐶) = 𝐸 |
decpmulnc.2 | ⊢ ((𝐴 · 𝐷) + (𝐵 · 𝐶)) = 𝐹 |
decpmul.3 | ⊢ (𝐵 · 𝐷) = ;𝐺𝐻 |
decpmul.4 | ⊢ (;𝐸𝐺 + 𝐹) = 𝐼 |
decpmul.g | ⊢ 𝐺 ∈ ℕ0 |
decpmul.h | ⊢ 𝐻 ∈ ℕ0 |
Ref | Expression |
---|---|
decpmul | ⊢ (;𝐴𝐵 · ;𝐶𝐷) = ;𝐼𝐻 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | decpmulnc.a | . . 3 ⊢ 𝐴 ∈ ℕ0 | |
2 | decpmulnc.b | . . 3 ⊢ 𝐵 ∈ ℕ0 | |
3 | decpmulnc.c | . . 3 ⊢ 𝐶 ∈ ℕ0 | |
4 | decpmulnc.d | . . 3 ⊢ 𝐷 ∈ ℕ0 | |
5 | decpmulnc.1 | . . 3 ⊢ (𝐴 · 𝐶) = 𝐸 | |
6 | decpmulnc.2 | . . 3 ⊢ ((𝐴 · 𝐷) + (𝐵 · 𝐶)) = 𝐹 | |
7 | decpmul.3 | . . 3 ⊢ (𝐵 · 𝐷) = ;𝐺𝐻 | |
8 | 1, 2, 3, 4, 5, 6, 7 | decpmulnc 39481 | . 2 ⊢ (;𝐴𝐵 · ;𝐶𝐷) = ;;𝐸𝐹;𝐺𝐻 |
9 | dfdec10 12089 | . 2 ⊢ ;;𝐸𝐹;𝐺𝐻 = ((;10 · ;𝐸𝐹) + ;𝐺𝐻) | |
10 | 1, 3 | nn0mulcli 11923 | . . . . 5 ⊢ (𝐴 · 𝐶) ∈ ℕ0 |
11 | 5, 10 | eqeltrri 2887 | . . . 4 ⊢ 𝐸 ∈ ℕ0 |
12 | 2, 3 | nn0mulcli 11923 | . . . . . 6 ⊢ (𝐵 · 𝐶) ∈ ℕ0 |
13 | 1, 4, 12 | numcl 12099 | . . . . 5 ⊢ ((𝐴 · 𝐷) + (𝐵 · 𝐶)) ∈ ℕ0 |
14 | 6, 13 | eqeltrri 2887 | . . . 4 ⊢ 𝐹 ∈ ℕ0 |
15 | 11, 14 | deccl 12101 | . . 3 ⊢ ;𝐸𝐹 ∈ ℕ0 |
16 | 0nn0 11900 | . . 3 ⊢ 0 ∈ ℕ0 | |
17 | decpmul.g | . . 3 ⊢ 𝐺 ∈ ℕ0 | |
18 | decpmul.h | . . 3 ⊢ 𝐻 ∈ ℕ0 | |
19 | 15 | dec0u 12107 | . . 3 ⊢ (;10 · ;𝐸𝐹) = ;;𝐸𝐹0 |
20 | eqid 2798 | . . 3 ⊢ ;𝐺𝐻 = ;𝐺𝐻 | |
21 | 11, 14, 17 | decaddcom 39478 | . . . 4 ⊢ (;𝐸𝐹 + 𝐺) = (;𝐸𝐺 + 𝐹) |
22 | decpmul.4 | . . . 4 ⊢ (;𝐸𝐺 + 𝐹) = 𝐼 | |
23 | 21, 22 | eqtri 2821 | . . 3 ⊢ (;𝐸𝐹 + 𝐺) = 𝐼 |
24 | 18 | nn0cni 11897 | . . . 4 ⊢ 𝐻 ∈ ℂ |
25 | 24 | addid2i 10817 | . . 3 ⊢ (0 + 𝐻) = 𝐻 |
26 | 15, 16, 17, 18, 19, 20, 23, 25 | decadd 12140 | . 2 ⊢ ((;10 · ;𝐸𝐹) + ;𝐺𝐻) = ;𝐼𝐻 |
27 | 8, 9, 26 | 3eqtri 2825 | 1 ⊢ (;𝐴𝐵 · ;𝐶𝐷) = ;𝐼𝐻 |
Colors of variables: wff setvar class |
Syntax hints: = wceq 1538 ∈ wcel 2111 (class class class)co 7135 0cc0 10526 1c1 10527 + caddc 10529 · cmul 10531 ℕ0cn0 11885 ;cdc 12086 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2113 ax-9 2121 ax-10 2142 ax-11 2158 ax-12 2175 ax-ext 2770 ax-sep 5167 ax-nul 5174 ax-pow 5231 ax-pr 5295 ax-un 7441 ax-resscn 10583 ax-1cn 10584 ax-icn 10585 ax-addcl 10586 ax-addrcl 10587 ax-mulcl 10588 ax-mulrcl 10589 ax-mulcom 10590 ax-addass 10591 ax-mulass 10592 ax-distr 10593 ax-i2m1 10594 ax-1ne0 10595 ax-1rid 10596 ax-rnegex 10597 ax-rrecex 10598 ax-cnre 10599 ax-pre-lttri 10600 ax-pre-lttrn 10601 ax-pre-ltadd 10602 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 845 df-3or 1085 df-3an 1086 df-tru 1541 df-ex 1782 df-nf 1786 df-sb 2070 df-mo 2598 df-eu 2629 df-clab 2777 df-cleq 2791 df-clel 2870 df-nfc 2938 df-ne 2988 df-nel 3092 df-ral 3111 df-rex 3112 df-reu 3113 df-rab 3115 df-v 3443 df-sbc 3721 df-csb 3829 df-dif 3884 df-un 3886 df-in 3888 df-ss 3898 df-pss 3900 df-nul 4244 df-if 4426 df-pw 4499 df-sn 4526 df-pr 4528 df-tp 4530 df-op 4532 df-uni 4801 df-iun 4883 df-br 5031 df-opab 5093 df-mpt 5111 df-tr 5137 df-id 5425 df-eprel 5430 df-po 5438 df-so 5439 df-fr 5478 df-we 5480 df-xp 5525 df-rel 5526 df-cnv 5527 df-co 5528 df-dm 5529 df-rn 5530 df-res 5531 df-ima 5532 df-pred 6116 df-ord 6162 df-on 6163 df-lim 6164 df-suc 6165 df-iota 6283 df-fun 6326 df-fn 6327 df-f 6328 df-f1 6329 df-fo 6330 df-f1o 6331 df-fv 6332 df-riota 7093 df-ov 7138 df-oprab 7139 df-mpo 7140 df-om 7561 df-wrecs 7930 df-recs 7991 df-rdg 8029 df-er 8272 df-en 8493 df-dom 8494 df-sdom 8495 df-pnf 10666 df-mnf 10667 df-ltxr 10669 df-sub 10861 df-nn 11626 df-2 11688 df-3 11689 df-4 11690 df-5 11691 df-6 11692 df-7 11693 df-8 11694 df-9 11695 df-n0 11886 df-dec 12087 |
This theorem is referenced by: ex-decpmul 39486 |
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