| Mathbox for Thierry Arnoux |
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| Mirrors > Home > MPE Home > Th. List > Mathboxes > rpdp2cl | Structured version Visualization version GIF version | ||
| Description: Closure for a decimal fraction in the positive real numbers. (Contributed by Thierry Arnoux, 16-Dec-2021.) |
| Ref | Expression |
|---|---|
| rpdp2cl.a | ⊢ 𝐴 ∈ ℕ0 |
| rpdp2cl.b | ⊢ 𝐵 ∈ ℝ+ |
| Ref | Expression |
|---|---|
| rpdp2cl | ⊢ _𝐴𝐵 ∈ ℝ+ |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-dp2 33511 | . 2 ⊢ _𝐴𝐵 = (𝐴 + (𝐵 / ;10)) | |
| 2 | rpdp2cl.a | . . . . 5 ⊢ 𝐴 ∈ ℕ0 | |
| 3 | 2 | nn0rei 12647 | . . . 4 ⊢ 𝐴 ∈ ℝ |
| 4 | rpssre 13158 | . . . . 5 ⊢ ℝ+ ⊆ ℝ | |
| 5 | rpdp2cl.b | . . . . . 6 ⊢ 𝐵 ∈ ℝ+ | |
| 6 | 10nn 12864 | . . . . . . 7 ⊢ ;10 ∈ ℕ | |
| 7 | nnrp 13162 | . . . . . . 7 ⊢ (;10 ∈ ℕ → ;10 ∈ ℝ+) | |
| 8 | 6, 7 | ax-mp 5 | . . . . . 6 ⊢ ;10 ∈ ℝ+ |
| 9 | rpdivcl 13177 | . . . . . 6 ⊢ ((𝐵 ∈ ℝ+ ∧ ;10 ∈ ℝ+) → (𝐵 / ;10) ∈ ℝ+) | |
| 10 | 5, 8, 9 | mp2an 705 | . . . . 5 ⊢ (𝐵 / ;10) ∈ ℝ+ |
| 11 | 4, 10 | sselii 3910 | . . . 4 ⊢ (𝐵 / ;10) ∈ ℝ |
| 12 | readdcl 11313 | . . . 4 ⊢ ((𝐴 ∈ ℝ ∧ (𝐵 / ;10) ∈ ℝ) → (𝐴 + (𝐵 / ;10)) ∈ ℝ) | |
| 13 | 3, 11, 12 | mp2an 705 | . . 3 ⊢ (𝐴 + (𝐵 / ;10)) ∈ ℝ |
| 14 | 3, 11 | pm3.2i 476 | . . . 4 ⊢ (𝐴 ∈ ℝ ∧ (𝐵 / ;10) ∈ ℝ) |
| 15 | 2 | nn0ge0i 12663 | . . . . 5 ⊢ 0 ≤ 𝐴 |
| 16 | rpgt0 13163 | . . . . . 6 ⊢ ((𝐵 / ;10) ∈ ℝ+ → 0 < (𝐵 / ;10)) | |
| 17 | 10, 16 | ax-mp 5 | . . . . 5 ⊢ 0 < (𝐵 / ;10) |
| 18 | 15, 17 | pm3.2i 476 | . . . 4 ⊢ (0 ≤ 𝐴 ∧ 0 < (𝐵 / ;10)) |
| 19 | addgegt0 11833 | . . . 4 ⊢ (((𝐴 ∈ ℝ ∧ (𝐵 / ;10) ∈ ℝ) ∧ (0 ≤ 𝐴 ∧ 0 < (𝐵 / ;10))) → 0 < (𝐴 + (𝐵 / ;10))) | |
| 20 | 14, 18, 19 | mp2an 705 | . . 3 ⊢ 0 < (𝐴 + (𝐵 / ;10)) |
| 21 | elrp 13152 | . . 3 ⊢ ((𝐴 + (𝐵 / ;10)) ∈ ℝ+ ↔ ((𝐴 + (𝐵 / ;10)) ∈ ℝ ∧ 0 < (𝐴 + (𝐵 / ;10)))) | |
| 22 | 13, 20, 21 | mpbir2an 724 | . 2 ⊢ (𝐴 + (𝐵 / ;10)) ∈ ℝ+ |
| 23 | 1, 22 | eqeltri 2860 | 1 ⊢ _𝐴𝐵 ∈ ℝ+ |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ∧ wa 401 ∈ wcel 2147 class class class wbr 5106 (class class class)co 7446 ℝcr 11229 0cc0 11230 1c1 11231 + caddc 11233 < clt 11373 ≤ cle 11374 / cdiv 12003 ℕcn 12365 ℕ0cn0 12636 ;cdc 12844 ℝ+crp 13150 _cdp2 33510 |
| 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 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-10 2180 ax-11 2197 ax-12 2216 ax-ext 2735 ax-sep 5253 ax-nul 5264 ax-pow 5332 ax-pr 5396 ax-un 7778 ax-resscn 11287 ax-1cn 11288 ax-icn 11289 ax-addcl 11290 ax-addrcl 11291 ax-mulcl 11292 ax-mulrcl 11293 ax-mulcom 11294 ax-addass 11295 ax-mulass 11296 ax-distr 11297 ax-i2m1 11298 ax-1ne0 11299 ax-1rid 11300 ax-rnegex 11301 ax-rrecex 11302 ax-cnre 11303 ax-pre-lttri 11304 ax-pre-lttrn 11305 ax-pre-ltadd 11306 ax-pre-mulgt0 11307 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2102 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2839 df-nfc 2913 df-ne 2960 df-nel 3066 df-ral 3081 df-rex 3091 df-rmo 3369 df-reu 3370 df-rab 3417 df-v 3456 df-sbc 3743 df-csb 3852 df-ss 3901 df-pss 4017 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-pw 4562 df-sn 4589 df-pr 4591 df-op 4839 df-uni 4871 df-iun 4956 df-br 5107 df-opab 5172 df-mpt 5191 df-tr 5217 df-id 5551 df-eprel 5556 df-po 5564 df-so 5565 df-fr 5609 df-we 5611 df-xp 5662 df-rel 5663 df-cnv 5664 df-co 5665 df-dm 5666 df-rn 5667 df-res 5668 df-ima 5669 df-pred 6325 df-ord 6386 df-on 6387 df-lim 6388 df-suc 6389 df-iota 6515 df-fun 6563 df-fn 6564 df-f 6565 df-f1 6566 df-fo 6567 df-f1o 6568 df-fv 6569 df-riota 7403 df-ov 7449 df-oprab 7450 df-mpo 7451 df-om 7905 df-2nd 8029 df-frecs 8330 df-wrecs 8361 df-recs 8410 df-rdg 8449 df-er 8748 df-en 9005 df-dom 9006 df-sdom 9007 df-pnf 11375 df-mnf 11376 df-xr 11377 df-ltxr 11378 df-le 11379 df-sub 11573 df-neg 11574 df-div 12004 df-nn 12366 df-2 12435 df-3 12436 df-4 12437 df-5 12438 df-6 12439 df-7 12440 df-8 12441 df-9 12442 df-n0 12637 df-dec 12845 df-rp 13151 df-dp2 33511 |
| This theorem is used by: rpdpcl 33542 dpexpp1 33547 hgt750lemd 35360 hgt750lem 35363 hgt750lem2 35364 hgt750leme 35370 |
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