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| Mirrors > Home > MPE Home > Th. List > Mathboxes > dp2clq | Structured version Visualization version GIF version | ||
| Description: Closure for a decimal fraction. (Contributed by Thierry Arnoux, 16-Dec-2021.) |
| Ref | Expression |
|---|---|
| dp2clq.a | ⊢ 𝐴 ∈ ℕ0 |
| dp2clq.b | ⊢ 𝐵 ∈ ℚ |
| Ref | Expression |
|---|---|
| dp2clq | ⊢ _𝐴𝐵 ∈ ℚ |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-dp2 33485 | . 2 ⊢ _𝐴𝐵 = (𝐴 + (𝐵 / ;10)) | |
| 2 | nn0ssq 13088 | . . . 4 ⊢ ℕ0 ⊆ ℚ | |
| 3 | dp2clq.a | . . . 4 ⊢ 𝐴 ∈ ℕ0 | |
| 4 | 2, 3 | sselii 3905 | . . 3 ⊢ 𝐴 ∈ ℚ |
| 5 | dp2clq.b | . . . 4 ⊢ 𝐵 ∈ ℚ | |
| 6 | 10nn0 12840 | . . . . 5 ⊢ ;10 ∈ ℕ0 | |
| 7 | 2, 6 | sselii 3905 | . . . 4 ⊢ ;10 ∈ ℚ |
| 8 | 0re 11314 | . . . . 5 ⊢ 0 ∈ ℝ | |
| 9 | 10pos 12839 | . . . . 5 ⊢ 0 < ;10 | |
| 10 | 8, 9 | gtneii 11426 | . . . 4 ⊢ ;10 ≠ 0 |
| 11 | qdivcl 13102 | . . . 4 ⊢ ((𝐵 ∈ ℚ ∧ ;10 ∈ ℚ ∧ ;10 ≠ 0) → (𝐵 / ;10) ∈ ℚ) | |
| 12 | 5, 7, 10, 11 | mp3an 1490 | . . 3 ⊢ (𝐵 / ;10) ∈ ℚ |
| 13 | qaddcl 13097 | . . 3 ⊢ ((𝐴 ∈ ℚ ∧ (𝐵 / ;10) ∈ ℚ) → (𝐴 + (𝐵 / ;10)) ∈ ℚ) | |
| 14 | 4, 12, 13 | mp2an 705 | . 2 ⊢ (𝐴 + (𝐵 / ;10)) ∈ ℚ |
| 15 | 1, 14 | eqeltri 2856 | 1 ⊢ _𝐴𝐵 ∈ ℚ |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ∈ wcel 2144 ≠ wne 2955 (class class class)co 7421 0cc0 11204 1c1 11205 + caddc 11207 / cdiv 11977 ℕ0cn0 12610 ;cdc 12818 ℚcq 13079 _cdp2 33484 |
| 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 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-10 2177 ax-11 2193 ax-12 2212 ax-ext 2732 ax-sep 5248 ax-nul 5259 ax-pow 5326 ax-pr 5390 ax-un 7752 ax-resscn 11261 ax-1cn 11262 ax-icn 11263 ax-addcl 11264 ax-addrcl 11265 ax-mulcl 11266 ax-mulrcl 11267 ax-mulcom 11268 ax-addass 11269 ax-mulass 11270 ax-distr 11271 ax-i2m1 11272 ax-1ne0 11273 ax-1rid 11274 ax-rnegex 11275 ax-rrecex 11276 ax-cnre 11277 ax-pre-lttri 11278 ax-pre-lttrn 11279 ax-pre-ltadd 11280 ax-pre-mulgt0 11281 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2099 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-nel 3062 df-ral 3077 df-rex 3087 df-rmo 3365 df-reu 3366 df-rab 3413 df-v 3452 df-sbc 3739 df-csb 3847 df-ss 3896 df-pss 4014 df-dif 4047 df-in 4091 df-un 4151 df-nul 4279 df-if 4482 df-pw 4558 df-sn 4585 df-pr 4587 df-op 4835 df-uni 4867 df-iun 4952 df-br 5103 df-opab 5167 df-mpt 5186 df-tr 5212 df-id 5545 df-eprel 5550 df-po 5558 df-so 5559 df-fr 5603 df-we 5605 df-xp 5656 df-rel 5657 df-cnv 5658 df-co 5659 df-dm 5660 df-rn 5661 df-res 5662 df-ima 5663 df-pred 6304 df-ord 6365 df-on 6366 df-lim 6367 df-suc 6368 df-iota 6494 df-fun 6541 df-fn 6542 df-f 6543 df-f1 6544 df-fo 6545 df-f1o 6546 df-fv 6547 df-riota 7378 df-ov 7424 df-oprab 7425 df-mpo 7426 df-om 7879 df-1st 8002 df-2nd 8003 df-frecs 8303 df-wrecs 8334 df-recs 8383 df-rdg 8422 df-er 8721 df-en 8978 df-dom 8979 df-sdom 8980 df-pnf 11349 df-mnf 11350 df-xr 11351 df-ltxr 11352 df-le 11353 df-sub 11547 df-neg 11548 df-div 11978 df-nn 12340 df-2 12409 df-3 12410 df-4 12411 df-5 12412 df-6 12413 df-7 12414 df-8 12415 df-9 12416 df-n0 12611 df-z 12698 df-dec 12819 df-q 13080 df-dp2 33485 |
| This theorem is used by: hgt750lem 35327 tgoldbachgtde 35336 |
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