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Mirrors > Home > MPE Home > Th. List > Mathboxes > dpval2 | Structured version Visualization version GIF version |
Description: Value of the decimal point construct. (Contributed by Thierry Arnoux, 16-Dec-2021.) |
Ref | Expression |
---|---|
dpval2.a | ⊢ 𝐴 ∈ ℕ0 |
dpval2.b | ⊢ 𝐵 ∈ ℝ |
Ref | Expression |
---|---|
dpval2 | ⊢ (𝐴.𝐵) = (𝐴 + (𝐵 / ;10)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | dpval2.a | . . 3 ⊢ 𝐴 ∈ ℕ0 | |
2 | dpval2.b | . . 3 ⊢ 𝐵 ∈ ℝ | |
3 | dpval 30142 | . . 3 ⊢ ((𝐴 ∈ ℕ0 ∧ 𝐵 ∈ ℝ) → (𝐴.𝐵) = _𝐴𝐵) | |
4 | 1, 2, 3 | mp2an 685 | . 2 ⊢ (𝐴.𝐵) = _𝐴𝐵 |
5 | df-dp2 30124 | . 2 ⊢ _𝐴𝐵 = (𝐴 + (𝐵 / ;10)) | |
6 | 4, 5 | eqtri 2848 | 1 ⊢ (𝐴.𝐵) = (𝐴 + (𝐵 / ;10)) |
Colors of variables: wff setvar class |
Syntax hints: = wceq 1658 ∈ wcel 2166 (class class class)co 6904 ℝcr 10250 0cc0 10251 1c1 10252 + caddc 10254 / cdiv 11008 ℕ0cn0 11617 ;cdc 11820 _cdp2 30123 .cdp 30140 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1896 ax-4 1910 ax-5 2011 ax-6 2077 ax-7 2114 ax-9 2175 ax-10 2194 ax-11 2209 ax-12 2222 ax-13 2390 ax-ext 2802 ax-sep 5004 ax-nul 5012 ax-pr 5126 |
This theorem depends on definitions: df-bi 199 df-an 387 df-or 881 df-3an 1115 df-tru 1662 df-ex 1881 df-nf 1885 df-sb 2070 df-mo 2604 df-eu 2639 df-clab 2811 df-cleq 2817 df-clel 2820 df-nfc 2957 df-ral 3121 df-rex 3122 df-rab 3125 df-v 3415 df-sbc 3662 df-dif 3800 df-un 3802 df-in 3804 df-ss 3811 df-nul 4144 df-if 4306 df-sn 4397 df-pr 4399 df-op 4403 df-uni 4658 df-br 4873 df-opab 4935 df-id 5249 df-xp 5347 df-rel 5348 df-cnv 5349 df-co 5350 df-dm 5351 df-iota 6085 df-fun 6124 df-fv 6130 df-ov 6907 df-oprab 6908 df-mpt2 6909 df-dp2 30124 df-dp 30141 |
This theorem is referenced by: dpval3 30146 dpmul10 30147 dpmul100 30149 dp3mul10 30150 dplti 30157 dpgti 30158 dpadd2 30162 |
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