| Mathbox for Thierry Arnoux |
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| Mirrors > Home > MPE Home > Th. List > Mathboxes > dfdec100 | Structured version Visualization version GIF version | ||
| Description: Split the hundreds from a decimal value. (Contributed by Thierry Arnoux, 25-Dec-2021.) |
| Ref | Expression |
|---|---|
| dfdec100.a | ⊢ 𝐴 ∈ ℕ0 |
| dfdec100.b | ⊢ 𝐵 ∈ ℕ0 |
| dfdec100.c | ⊢ 𝐶 ∈ ℝ |
| Ref | Expression |
|---|---|
| dfdec100 | ⊢ ;;𝐴𝐵𝐶 = ((;;100 · 𝐴) + ;𝐵𝐶) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | dfdec10 12638 | . . 3 ⊢ ;𝐵𝐶 = ((;10 · 𝐵) + 𝐶) | |
| 2 | 1 | oveq2i 7371 | . 2 ⊢ ((;;100 · 𝐴) + ;𝐵𝐶) = ((;;100 · 𝐴) + ((;10 · 𝐵) + 𝐶)) |
| 3 | 10nn0 12653 | . . . . . 6 ⊢ ;10 ∈ ℕ0 | |
| 4 | 3 | dec0u 12656 | . . . . 5 ⊢ (;10 · ;10) = ;;100 |
| 5 | 3 | nn0cni 12440 | . . . . . 6 ⊢ ;10 ∈ ℂ |
| 6 | 5, 5 | mulcli 11143 | . . . . 5 ⊢ (;10 · ;10) ∈ ℂ |
| 7 | 4, 6 | eqeltrri 2834 | . . . 4 ⊢ ;;100 ∈ ℂ |
| 8 | dfdec100.a | . . . . 5 ⊢ 𝐴 ∈ ℕ0 | |
| 9 | 8 | nn0cni 12440 | . . . 4 ⊢ 𝐴 ∈ ℂ |
| 10 | 7, 9 | mulcli 11143 | . . 3 ⊢ (;;100 · 𝐴) ∈ ℂ |
| 11 | dfdec100.b | . . . . 5 ⊢ 𝐵 ∈ ℕ0 | |
| 12 | 11 | nn0cni 12440 | . . . 4 ⊢ 𝐵 ∈ ℂ |
| 13 | 5, 12 | mulcli 11143 | . . 3 ⊢ (;10 · 𝐵) ∈ ℂ |
| 14 | dfdec100.c | . . . 4 ⊢ 𝐶 ∈ ℝ | |
| 15 | 14 | recni 11150 | . . 3 ⊢ 𝐶 ∈ ℂ |
| 16 | 10, 13, 15 | addassi 11146 | . 2 ⊢ (((;;100 · 𝐴) + (;10 · 𝐵)) + 𝐶) = ((;;100 · 𝐴) + ((;10 · 𝐵) + 𝐶)) |
| 17 | dfdec10 12638 | . . 3 ⊢ ;;𝐴𝐵𝐶 = ((;10 · ;𝐴𝐵) + 𝐶) | |
| 18 | dfdec10 12638 | . . . . . 6 ⊢ ;𝐴𝐵 = ((;10 · 𝐴) + 𝐵) | |
| 19 | 18 | oveq2i 7371 | . . . . 5 ⊢ (;10 · ;𝐴𝐵) = (;10 · ((;10 · 𝐴) + 𝐵)) |
| 20 | 5, 9 | mulcli 11143 | . . . . . 6 ⊢ (;10 · 𝐴) ∈ ℂ |
| 21 | 5, 20, 12 | adddii 11148 | . . . . 5 ⊢ (;10 · ((;10 · 𝐴) + 𝐵)) = ((;10 · (;10 · 𝐴)) + (;10 · 𝐵)) |
| 22 | 5, 5, 9 | mulassi 11147 | . . . . . . 7 ⊢ ((;10 · ;10) · 𝐴) = (;10 · (;10 · 𝐴)) |
| 23 | 4 | oveq1i 7370 | . . . . . . 7 ⊢ ((;10 · ;10) · 𝐴) = (;;100 · 𝐴) |
| 24 | 22, 23 | eqtr3i 2762 | . . . . . 6 ⊢ (;10 · (;10 · 𝐴)) = (;;100 · 𝐴) |
| 25 | 24 | oveq1i 7370 | . . . . 5 ⊢ ((;10 · (;10 · 𝐴)) + (;10 · 𝐵)) = ((;;100 · 𝐴) + (;10 · 𝐵)) |
| 26 | 19, 21, 25 | 3eqtri 2764 | . . . 4 ⊢ (;10 · ;𝐴𝐵) = ((;;100 · 𝐴) + (;10 · 𝐵)) |
| 27 | 26 | oveq1i 7370 | . . 3 ⊢ ((;10 · ;𝐴𝐵) + 𝐶) = (((;;100 · 𝐴) + (;10 · 𝐵)) + 𝐶) |
| 28 | 17, 27 | eqtr2i 2761 | . 2 ⊢ (((;;100 · 𝐴) + (;10 · 𝐵)) + 𝐶) = ;;𝐴𝐵𝐶 |
| 29 | 2, 16, 28 | 3eqtr2ri 2767 | 1 ⊢ ;;𝐴𝐵𝐶 = ((;;100 · 𝐴) + ;𝐵𝐶) |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1542 ∈ wcel 2114 (class class class)co 7360 ℂcc 11027 ℝcr 11028 0cc0 11029 1c1 11030 + caddc 11032 · cmul 11034 ℕ0cn0 12428 ;cdc 12635 |
| 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 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2709 ax-sep 5231 ax-nul 5241 ax-pow 5302 ax-pr 5370 ax-un 7682 ax-resscn 11086 ax-1cn 11087 ax-icn 11088 ax-addcl 11089 ax-addrcl 11090 ax-mulcl 11091 ax-mulrcl 11092 ax-mulcom 11093 ax-addass 11094 ax-mulass 11095 ax-distr 11096 ax-i2m1 11097 ax-1ne0 11098 ax-1rid 11099 ax-rnegex 11100 ax-rrecex 11101 ax-cnre 11102 ax-pre-lttri 11103 ax-pre-lttrn 11104 ax-pre-ltadd 11105 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ne 2934 df-nel 3038 df-ral 3053 df-rex 3063 df-reu 3344 df-rab 3391 df-v 3432 df-sbc 3730 df-csb 3839 df-dif 3893 df-un 3895 df-in 3897 df-ss 3907 df-pss 3910 df-nul 4275 df-if 4468 df-pw 4544 df-sn 4569 df-pr 4571 df-op 4575 df-uni 4852 df-iun 4936 df-br 5087 df-opab 5149 df-mpt 5168 df-tr 5194 df-id 5519 df-eprel 5524 df-po 5532 df-so 5533 df-fr 5577 df-we 5579 df-xp 5630 df-rel 5631 df-cnv 5632 df-co 5633 df-dm 5634 df-rn 5635 df-res 5636 df-ima 5637 df-pred 6259 df-ord 6320 df-on 6321 df-lim 6322 df-suc 6323 df-iota 6448 df-fun 6494 df-fn 6495 df-f 6496 df-f1 6497 df-fo 6498 df-f1o 6499 df-fv 6500 df-ov 7363 df-om 7811 df-2nd 7936 df-frecs 8224 df-wrecs 8255 df-recs 8304 df-rdg 8342 df-er 8636 df-en 8887 df-dom 8888 df-sdom 8889 df-pnf 11172 df-mnf 11173 df-ltxr 11175 df-nn 12166 df-2 12235 df-3 12236 df-4 12237 df-5 12238 df-6 12239 df-7 12240 df-8 12241 df-9 12242 df-n0 12429 df-dec 12636 |
| This theorem is referenced by: dpmul100 32971 dpmul1000 32973 dpmul4 32988 |
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