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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 33099 | . 2 ⊢ _𝐴𝐵 = (𝐴 + (𝐵 / ;10)) | |
| 2 | nn0ssq 12969 | . . . 4 ⊢ ℕ0 ⊆ ℚ | |
| 3 | dp2clq.a | . . . 4 ⊢ 𝐴 ∈ ℕ0 | |
| 4 | 2, 3 | sselii 3936 | . . 3 ⊢ 𝐴 ∈ ℚ |
| 5 | dp2clq.b | . . . 4 ⊢ 𝐵 ∈ ℚ | |
| 6 | 10nn0 12721 | . . . . 5 ⊢ ;10 ∈ ℕ0 | |
| 7 | 2, 6 | sselii 3936 | . . . 4 ⊢ ;10 ∈ ℚ |
| 8 | 0re 11198 | . . . . 5 ⊢ 0 ∈ ℝ | |
| 9 | 10pos 12720 | . . . . 5 ⊢ 0 < ;10 | |
| 10 | 8, 9 | gtneii 11310 | . . . 4 ⊢ ;10 ≠ 0 |
| 11 | qdivcl 12982 | . . . 4 ⊢ ((𝐵 ∈ ℚ ∧ ;10 ∈ ℚ ∧ ;10 ≠ 0) → (𝐵 / ;10) ∈ ℚ) | |
| 12 | 5, 7, 10, 11 | mp3an 1485 | . . 3 ⊢ (𝐵 / ;10) ∈ ℚ |
| 13 | qaddcl 12977 | . . 3 ⊢ ((𝐴 ∈ ℚ ∧ (𝐵 / ;10) ∈ ℚ) → (𝐴 + (𝐵 / ;10)) ∈ ℚ) | |
| 14 | 4, 12, 13 | mp2an 704 | . 2 ⊢ (𝐴 + (𝐵 / ;10)) ∈ ℚ |
| 15 | 1, 14 | eqeltri 2861 | 1 ⊢ _𝐴𝐵 ∈ ℚ |
| Colors of variables: wff setvar class |
| Syntax hints: ∈ wcel 2145 ≠ wne 2960 (class class class)co 7400 0cc0 11088 1c1 11089 + caddc 11091 / cdiv 11859 ℕ0cn0 12492 ;cdc 12699 ℚcq 12960 _cdp2 33098 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1818 ax-4 1832 ax-5 1933 ax-6 1990 ax-7 2031 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2215 ax-ext 2737 ax-sep 5250 ax-nul 5260 ax-pow 5326 ax-pr 5394 ax-un 7722 ax-resscn 11145 ax-1cn 11146 ax-icn 11147 ax-addcl 11148 ax-addrcl 11149 ax-mulcl 11150 ax-mulrcl 11151 ax-mulcom 11152 ax-addass 11153 ax-mulass 11154 ax-distr 11155 ax-i2m1 11156 ax-1ne0 11157 ax-1rid 11158 ax-rnegex 11159 ax-rrecex 11160 ax-cnre 11161 ax-pre-lttri 11162 ax-pre-lttrn 11163 ax-pre-ltadd 11164 ax-pre-mulgt0 11165 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1102 df-3an 1103 df-tru 1566 df-fal 1576 df-ex 1803 df-nf 1807 df-sb 2094 df-mo 2569 df-eu 2599 df-clab 2744 df-cleq 2757 df-clel 2840 df-nfc 2914 df-ne 2961 df-nel 3065 df-ral 3080 df-rex 3090 df-rmo 3370 df-reu 3371 df-rab 3418 df-v 3459 df-sbc 3748 df-csb 3856 df-dif 3910 df-un 3912 df-in 3914 df-ss 3924 df-pss 3927 df-nul 4289 df-if 4484 df-pw 4560 df-sn 4586 df-pr 4588 df-op 4592 df-uni 4868 df-iun 4953 df-br 5105 df-opab 5167 df-mpt 5186 df-tr 5212 df-id 5546 df-eprel 5551 df-po 5559 df-so 5560 df-fr 5604 df-we 5606 df-xp 5657 df-rel 5658 df-cnv 5659 df-co 5660 df-dm 5661 df-rn 5662 df-res 5663 df-ima 5664 df-pred 6291 df-ord 6352 df-on 6353 df-lim 6354 df-suc 6355 df-iota 6481 df-fun 6527 df-fn 6528 df-f 6529 df-f1 6530 df-fo 6531 df-f1o 6532 df-fv 6533 df-riota 7357 df-ov 7403 df-oprab 7404 df-mpo 7405 df-om 7851 df-1st 7974 df-2nd 7975 df-frecs 8266 df-wrecs 8297 df-recs 8346 df-rdg 8385 df-er 8682 df-en 8932 df-dom 8933 df-sdom 8934 df-pnf 11233 df-mnf 11234 df-xr 11235 df-ltxr 11236 df-le 11237 df-sub 11431 df-neg 11432 df-div 11860 df-nn 12222 df-2 12291 df-3 12292 df-4 12293 df-5 12294 df-6 12295 df-7 12296 df-8 12297 df-9 12298 df-n0 12493 df-z 12580 df-dec 12700 df-q 12961 df-dp2 33099 |
| This theorem is referenced by: hgt750lem 34950 tgoldbachgtde 34959 |
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