| Mathbox for Thierry Arnoux |
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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 33512 | . 2 ⊢ (𝐴.𝐵) = (𝐴 + (𝐵 / ;10)) |
| 4 | df-dp2 33491 | . 2 ⊢ _𝐴𝐵 = (𝐴 + (𝐵 / ;10)) | |
| 5 | 3, 4 | eqtr4i 2789 | 1 ⊢ (𝐴.𝐵) = _𝐴𝐵 |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: = wceq 1569 ∈ wcel 2146 (class class class)co 7427 ℝcr 11209 0cc0 11210 1c1 11211 + caddc 11213 / cdiv 11983 ℕ0cn0 12616 ;cdc 12824 _cdp2 33490 .cdp 33507 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1944 ax-6 2001 ax-7 2042 ax-8 2148 ax-9 2156 ax-10 2179 ax-11 2196 ax-12 2215 ax-ext 2735 ax-sep 5251 ax-nul 5262 ax-pr 5394 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2101 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2838 df-nfc 2912 df-ne 2959 df-ral 3080 df-rex 3090 df-rab 3416 df-v 3455 df-sbc 3742 df-ss 3900 df-dif 4049 df-in 4093 df-un 4153 df-nul 4281 df-if 4485 df-sn 4588 df-pr 4590 df-op 4838 df-uni 4870 df-br 5106 df-opab 5170 df-id 5549 df-xp 5660 df-rel 5661 df-cnv 5662 df-co 5663 df-dm 5664 df-iota 6500 df-fun 6548 df-fv 6554 df-ov 7430 df-oprab 7431 df-mpo 7432 df-dp2 33491 df-dp 33508 |
| This theorem is used by: dpmul100 33516 dpval3rp 33519 dp0u 33520 |
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