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| Mirrors > Home > MPE Home > Th. List > Mathboxes > dpval3 | 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 |
|---|---|
| dpval3 | ⊢ (𝐴.𝐵) = _𝐴𝐵 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | dpval2.a | . . 3 ⊢ 𝐴 ∈ ℕ0 | |
| 2 | dpval2.b | . . 3 ⊢ 𝐵 ∈ ℝ | |
| 3 | 1, 2 | dpval2 33030 | . 2 ⊢ (𝐴.𝐵) = (𝐴 + (𝐵 / ;10)) |
| 4 | df-dp2 33009 | . 2 ⊢ _𝐴𝐵 = (𝐴 + (𝐵 / ;10)) | |
| 5 | 3, 4 | eqtr4i 2787 | 1 ⊢ (𝐴.𝐵) = _𝐴𝐵 |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1559 ∈ wcel 2141 (class class class)co 7390 ℝcr 11065 0cc0 11066 1c1 11067 + caddc 11069 / cdiv 11837 ℕ0cn0 12474 ;cdc 12681 _cdp2 33008 .cdp 33025 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1814 ax-4 1828 ax-5 1929 ax-6 1986 ax-7 2027 ax-8 2143 ax-9 2151 ax-10 2174 ax-11 2190 ax-12 2211 ax-ext 2733 ax-sep 5243 ax-nul 5253 ax-pr 5387 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3an 1099 df-tru 1562 df-fal 1572 df-ex 1799 df-nf 1803 df-sb 2090 df-mo 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ne 2957 df-ral 3076 df-rex 3086 df-rab 3414 df-v 3455 df-sbc 3743 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-nul 4284 df-if 4478 df-sn 4580 df-pr 4582 df-op 4586 df-uni 4863 df-br 5098 df-opab 5160 df-id 5538 df-xp 5649 df-rel 5650 df-cnv 5651 df-co 5652 df-dm 5653 df-iota 6471 df-fun 6517 df-fv 6523 df-ov 7393 df-oprab 7394 df-mpo 7395 df-dp2 33009 df-dp 33026 |
| This theorem is referenced by: dpmul100 33034 dpval3rp 33037 dp0u 33038 |
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