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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 32861 | . 2 ⊢ _𝐴𝐵 = (𝐴 + (𝐵 / ;10)) | |
| 2 | nn0ssq 12859 | . . . 4 ⊢ ℕ0 ⊆ ℚ | |
| 3 | dp2clq.a | . . . 4 ⊢ 𝐴 ∈ ℕ0 | |
| 4 | 2, 3 | sselii 3927 | . . 3 ⊢ 𝐴 ∈ ℚ |
| 5 | dp2clq.b | . . . 4 ⊢ 𝐵 ∈ ℚ | |
| 6 | 10nn0 12614 | . . . . 5 ⊢ ;10 ∈ ℕ0 | |
| 7 | 2, 6 | sselii 3927 | . . . 4 ⊢ ;10 ∈ ℚ |
| 8 | 0re 11123 | . . . . 5 ⊢ 0 ∈ ℝ | |
| 9 | 10pos 12613 | . . . . 5 ⊢ 0 < ;10 | |
| 10 | 8, 9 | gtneii 11234 | . . . 4 ⊢ ;10 ≠ 0 |
| 11 | qdivcl 12872 | . . . 4 ⊢ ((𝐵 ∈ ℚ ∧ ;10 ∈ ℚ ∧ ;10 ≠ 0) → (𝐵 / ;10) ∈ ℚ) | |
| 12 | 5, 7, 10, 11 | mp3an 1463 | . . 3 ⊢ (𝐵 / ;10) ∈ ℚ |
| 13 | qaddcl 12867 | . . 3 ⊢ ((𝐴 ∈ ℚ ∧ (𝐵 / ;10) ∈ ℚ) → (𝐴 + (𝐵 / ;10)) ∈ ℚ) | |
| 14 | 4, 12, 13 | mp2an 692 | . 2 ⊢ (𝐴 + (𝐵 / ;10)) ∈ ℚ |
| 15 | 1, 14 | eqeltri 2829 | 1 ⊢ _𝐴𝐵 ∈ ℚ |
| Colors of variables: wff setvar class |
| Syntax hints: ∈ wcel 2113 ≠ wne 2929 (class class class)co 7354 0cc0 11015 1c1 11016 + caddc 11018 / cdiv 11783 ℕ0cn0 12390 ;cdc 12596 ℚcq 12850 _cdp2 32860 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2115 ax-9 2123 ax-10 2146 ax-11 2162 ax-12 2182 ax-ext 2705 ax-sep 5238 ax-nul 5248 ax-pow 5307 ax-pr 5374 ax-un 7676 ax-resscn 11072 ax-1cn 11073 ax-icn 11074 ax-addcl 11075 ax-addrcl 11076 ax-mulcl 11077 ax-mulrcl 11078 ax-mulcom 11079 ax-addass 11080 ax-mulass 11081 ax-distr 11082 ax-i2m1 11083 ax-1ne0 11084 ax-1rid 11085 ax-rnegex 11086 ax-rrecex 11087 ax-cnre 11088 ax-pre-lttri 11089 ax-pre-lttrn 11090 ax-pre-ltadd 11091 ax-pre-mulgt0 11092 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-nf 1785 df-sb 2068 df-mo 2537 df-eu 2566 df-clab 2712 df-cleq 2725 df-clel 2808 df-nfc 2882 df-ne 2930 df-nel 3034 df-ral 3049 df-rex 3058 df-rmo 3347 df-reu 3348 df-rab 3397 df-v 3439 df-sbc 3738 df-csb 3847 df-dif 3901 df-un 3903 df-in 3905 df-ss 3915 df-pss 3918 df-nul 4283 df-if 4477 df-pw 4553 df-sn 4578 df-pr 4580 df-op 4584 df-uni 4861 df-iun 4945 df-br 5096 df-opab 5158 df-mpt 5177 df-tr 5203 df-id 5516 df-eprel 5521 df-po 5529 df-so 5530 df-fr 5574 df-we 5576 df-xp 5627 df-rel 5628 df-cnv 5629 df-co 5630 df-dm 5631 df-rn 5632 df-res 5633 df-ima 5634 df-pred 6255 df-ord 6316 df-on 6317 df-lim 6318 df-suc 6319 df-iota 6444 df-fun 6490 df-fn 6491 df-f 6492 df-f1 6493 df-fo 6494 df-f1o 6495 df-fv 6496 df-riota 7311 df-ov 7357 df-oprab 7358 df-mpo 7359 df-om 7805 df-1st 7929 df-2nd 7930 df-frecs 8219 df-wrecs 8250 df-recs 8299 df-rdg 8337 df-er 8630 df-en 8878 df-dom 8879 df-sdom 8880 df-pnf 11157 df-mnf 11158 df-xr 11159 df-ltxr 11160 df-le 11161 df-sub 11355 df-neg 11356 df-div 11784 df-nn 12135 df-2 12197 df-3 12198 df-4 12199 df-5 12200 df-6 12201 df-7 12202 df-8 12203 df-9 12204 df-n0 12391 df-z 12478 df-dec 12597 df-q 12851 df-dp2 32861 |
| This theorem is referenced by: hgt750lem 34687 tgoldbachgtde 34696 |
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