| 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 33459 | . 2 ⊢ (𝐴.𝐵) = (𝐴 + (𝐵 / ;10)) |
| 4 | df-dp2 33438 | . 2 ⊢ _𝐴𝐵 = (𝐴 + (𝐵 / ;10)) | |
| 5 | 3, 4 | eqtr4i 2787 | 1 ⊢ (𝐴.𝐵) = _𝐴𝐵 |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: = wceq 1570 ∈ wcel 2145 (class class class)co 7420 ℝcr 11199 0cc0 11200 1c1 11201 + caddc 11203 / cdiv 11973 ℕ0cn0 12606 ;cdc 12814 _cdp2 33437 .cdp 33454 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2213 ax-ext 2733 ax-sep 5249 ax-nul 5260 ax-pr 5391 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ne 2957 df-ral 3078 df-rex 3088 df-rab 3414 df-v 3453 df-sbc 3740 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-nul 4280 df-if 4483 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-br 5104 df-opab 5168 df-id 5546 df-xp 5657 df-rel 5658 df-cnv 5659 df-co 5660 df-dm 5661 df-iota 6494 df-fun 6540 df-fv 6546 df-ov 7423 df-oprab 7424 df-mpo 7425 df-dp2 33438 df-dp 33455 |
| This theorem is used by: dpmul100 33463 dpval3rp 33466 dp0u 33467 |
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