Mathbox for Thierry Arnoux |
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Mirrors > Home > MPE Home > Th. List > Mathboxes > dpmul100 | Structured version Visualization version GIF version |
Description: Multiply by 100 a decimal expansion. (Contributed by Thierry Arnoux, 25-Dec-2021.) |
Ref | Expression |
---|---|
dp3mul10.a | ⊢ 𝐴 ∈ ℕ0 |
dp3mul10.b | ⊢ 𝐵 ∈ ℕ0 |
dp3mul10.c | ⊢ 𝐶 ∈ ℝ |
Ref | Expression |
---|---|
dpmul100 | ⊢ ((𝐴._𝐵𝐶) · ;;100) = ;;𝐴𝐵𝐶 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | dp3mul10.a | . . . . 5 ⊢ 𝐴 ∈ ℕ0 | |
2 | dp3mul10.b | . . . . . . 7 ⊢ 𝐵 ∈ ℕ0 | |
3 | 2 | nn0rei 12174 | . . . . . 6 ⊢ 𝐵 ∈ ℝ |
4 | dp3mul10.c | . . . . . 6 ⊢ 𝐶 ∈ ℝ | |
5 | dp2cl 31056 | . . . . . 6 ⊢ ((𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → _𝐵𝐶 ∈ ℝ) | |
6 | 3, 4, 5 | mp2an 688 | . . . . 5 ⊢ _𝐵𝐶 ∈ ℝ |
7 | 1, 6 | dpval2 31069 | . . . 4 ⊢ (𝐴._𝐵𝐶) = (𝐴 + (_𝐵𝐶 / ;10)) |
8 | 1 | nn0cni 12175 | . . . . 5 ⊢ 𝐴 ∈ ℂ |
9 | 6 | recni 10920 | . . . . . 6 ⊢ _𝐵𝐶 ∈ ℂ |
10 | 10nn0 12384 | . . . . . . 7 ⊢ ;10 ∈ ℕ0 | |
11 | 10 | nn0cni 12175 | . . . . . 6 ⊢ ;10 ∈ ℂ |
12 | 10nn 12382 | . . . . . . 7 ⊢ ;10 ∈ ℕ | |
13 | 12 | nnne0i 11943 | . . . . . 6 ⊢ ;10 ≠ 0 |
14 | 9, 11, 13 | divcli 11647 | . . . . 5 ⊢ (_𝐵𝐶 / ;10) ∈ ℂ |
15 | 8, 14 | addcli 10912 | . . . 4 ⊢ (𝐴 + (_𝐵𝐶 / ;10)) ∈ ℂ |
16 | 7, 15 | eqeltri 2835 | . . 3 ⊢ (𝐴._𝐵𝐶) ∈ ℂ |
17 | 16, 11, 11 | mulassi 10917 | . 2 ⊢ (((𝐴._𝐵𝐶) · ;10) · ;10) = ((𝐴._𝐵𝐶) · (;10 · ;10)) |
18 | 1, 2, 4 | dfdec100 31046 | . . 3 ⊢ ;;𝐴𝐵𝐶 = ((;;100 · 𝐴) + ;𝐵𝐶) |
19 | 11, 8, 11 | mul32i 11101 | . . . . 5 ⊢ ((;10 · 𝐴) · ;10) = ((;10 · ;10) · 𝐴) |
20 | 10 | dec0u 12387 | . . . . . 6 ⊢ (;10 · ;10) = ;;100 |
21 | 20 | oveq1i 7265 | . . . . 5 ⊢ ((;10 · ;10) · 𝐴) = (;;100 · 𝐴) |
22 | 19, 21 | eqtri 2766 | . . . 4 ⊢ ((;10 · 𝐴) · ;10) = (;;100 · 𝐴) |
23 | 2, 4 | dpval3 31070 | . . . . . 6 ⊢ (𝐵.𝐶) = _𝐵𝐶 |
24 | 23 | oveq1i 7265 | . . . . 5 ⊢ ((𝐵.𝐶) · ;10) = (_𝐵𝐶 · ;10) |
25 | 2, 4 | dpmul10 31071 | . . . . 5 ⊢ ((𝐵.𝐶) · ;10) = ;𝐵𝐶 |
26 | 24, 25 | eqtr3i 2768 | . . . 4 ⊢ (_𝐵𝐶 · ;10) = ;𝐵𝐶 |
27 | 22, 26 | oveq12i 7267 | . . 3 ⊢ (((;10 · 𝐴) · ;10) + (_𝐵𝐶 · ;10)) = ((;;100 · 𝐴) + ;𝐵𝐶) |
28 | 1, 6 | dpmul10 31071 | . . . . . 6 ⊢ ((𝐴._𝐵𝐶) · ;10) = ;𝐴_𝐵𝐶 |
29 | dfdec10 12369 | . . . . . 6 ⊢ ;𝐴_𝐵𝐶 = ((;10 · 𝐴) + _𝐵𝐶) | |
30 | 28, 29 | eqtri 2766 | . . . . 5 ⊢ ((𝐴._𝐵𝐶) · ;10) = ((;10 · 𝐴) + _𝐵𝐶) |
31 | 30 | oveq1i 7265 | . . . 4 ⊢ (((𝐴._𝐵𝐶) · ;10) · ;10) = (((;10 · 𝐴) + _𝐵𝐶) · ;10) |
32 | 11, 8 | mulcli 10913 | . . . . 5 ⊢ (;10 · 𝐴) ∈ ℂ |
33 | 32, 9, 11 | adddiri 10919 | . . . 4 ⊢ (((;10 · 𝐴) + _𝐵𝐶) · ;10) = (((;10 · 𝐴) · ;10) + (_𝐵𝐶 · ;10)) |
34 | 31, 33 | eqtr2i 2767 | . . 3 ⊢ (((;10 · 𝐴) · ;10) + (_𝐵𝐶 · ;10)) = (((𝐴._𝐵𝐶) · ;10) · ;10) |
35 | 18, 27, 34 | 3eqtr2ri 2773 | . 2 ⊢ (((𝐴._𝐵𝐶) · ;10) · ;10) = ;;𝐴𝐵𝐶 |
36 | 20 | oveq2i 7266 | . 2 ⊢ ((𝐴._𝐵𝐶) · (;10 · ;10)) = ((𝐴._𝐵𝐶) · ;;100) |
37 | 17, 35, 36 | 3eqtr3ri 2775 | 1 ⊢ ((𝐴._𝐵𝐶) · ;;100) = ;;𝐴𝐵𝐶 |
Colors of variables: wff setvar class |
Syntax hints: = wceq 1539 ∈ wcel 2108 (class class class)co 7255 ℂcc 10800 ℝcr 10801 0cc0 10802 1c1 10803 + caddc 10805 · cmul 10807 / cdiv 11562 ℕ0cn0 12163 ;cdc 12366 _cdp2 31047 .cdp 31064 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1799 ax-4 1813 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2110 ax-9 2118 ax-10 2139 ax-11 2156 ax-12 2173 ax-ext 2709 ax-sep 5218 ax-nul 5225 ax-pow 5283 ax-pr 5347 ax-un 7566 ax-resscn 10859 ax-1cn 10860 ax-icn 10861 ax-addcl 10862 ax-addrcl 10863 ax-mulcl 10864 ax-mulrcl 10865 ax-mulcom 10866 ax-addass 10867 ax-mulass 10868 ax-distr 10869 ax-i2m1 10870 ax-1ne0 10871 ax-1rid 10872 ax-rnegex 10873 ax-rrecex 10874 ax-cnre 10875 ax-pre-lttri 10876 ax-pre-lttrn 10877 ax-pre-ltadd 10878 ax-pre-mulgt0 10879 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 844 df-3or 1086 df-3an 1087 df-tru 1542 df-fal 1552 df-ex 1784 df-nf 1788 df-sb 2069 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2817 df-nfc 2888 df-ne 2943 df-nel 3049 df-ral 3068 df-rex 3069 df-reu 3070 df-rmo 3071 df-rab 3072 df-v 3424 df-sbc 3712 df-csb 3829 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-pss 3902 df-nul 4254 df-if 4457 df-pw 4532 df-sn 4559 df-pr 4561 df-tp 4563 df-op 4565 df-uni 4837 df-iun 4923 df-br 5071 df-opab 5133 df-mpt 5154 df-tr 5188 df-id 5480 df-eprel 5486 df-po 5494 df-so 5495 df-fr 5535 df-we 5537 df-xp 5586 df-rel 5587 df-cnv 5588 df-co 5589 df-dm 5590 df-rn 5591 df-res 5592 df-ima 5593 df-pred 6191 df-ord 6254 df-on 6255 df-lim 6256 df-suc 6257 df-iota 6376 df-fun 6420 df-fn 6421 df-f 6422 df-f1 6423 df-fo 6424 df-f1o 6425 df-fv 6426 df-riota 7212 df-ov 7258 df-oprab 7259 df-mpo 7260 df-om 7688 df-2nd 7805 df-frecs 8068 df-wrecs 8099 df-recs 8173 df-rdg 8212 df-er 8456 df-en 8692 df-dom 8693 df-sdom 8694 df-pnf 10942 df-mnf 10943 df-xr 10944 df-ltxr 10945 df-le 10946 df-sub 11137 df-neg 11138 df-div 11563 df-nn 11904 df-2 11966 df-3 11967 df-4 11968 df-5 11969 df-6 11970 df-7 11971 df-8 11972 df-9 11973 df-n0 12164 df-dec 12367 df-dp2 31048 df-dp 31065 |
This theorem is referenced by: dpmul1000 31075 dpadd3 31088 dpmul 31089 dpmul4 31090 |
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