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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 32854 | . 2 ⊢ _𝐴𝐵 = (𝐴 + (𝐵 / ;10)) | |
| 2 | rpdp2cl.a | . . . . 5 ⊢ 𝐴 ∈ ℕ0 | |
| 3 | 2 | nn0rei 12537 | . . . 4 ⊢ 𝐴 ∈ ℝ | 
| 4 | rpssre 13042 | . . . . 5 ⊢ ℝ+ ⊆ ℝ | |
| 5 | rpdp2cl.b | . . . . . 6 ⊢ 𝐵 ∈ ℝ+ | |
| 6 | 10nn 12749 | . . . . . . 7 ⊢ ;10 ∈ ℕ | |
| 7 | nnrp 13046 | . . . . . . 7 ⊢ (;10 ∈ ℕ → ;10 ∈ ℝ+) | |
| 8 | 6, 7 | ax-mp 5 | . . . . . 6 ⊢ ;10 ∈ ℝ+ | 
| 9 | rpdivcl 13060 | . . . . . 6 ⊢ ((𝐵 ∈ ℝ+ ∧ ;10 ∈ ℝ+) → (𝐵 / ;10) ∈ ℝ+) | |
| 10 | 5, 8, 9 | mp2an 692 | . . . . 5 ⊢ (𝐵 / ;10) ∈ ℝ+ | 
| 11 | 4, 10 | sselii 3980 | . . . 4 ⊢ (𝐵 / ;10) ∈ ℝ | 
| 12 | readdcl 11238 | . . . 4 ⊢ ((𝐴 ∈ ℝ ∧ (𝐵 / ;10) ∈ ℝ) → (𝐴 + (𝐵 / ;10)) ∈ ℝ) | |
| 13 | 3, 11, 12 | mp2an 692 | . . 3 ⊢ (𝐴 + (𝐵 / ;10)) ∈ ℝ | 
| 14 | 3, 11 | pm3.2i 470 | . . . 4 ⊢ (𝐴 ∈ ℝ ∧ (𝐵 / ;10) ∈ ℝ) | 
| 15 | 2 | nn0ge0i 12553 | . . . . 5 ⊢ 0 ≤ 𝐴 | 
| 16 | rpgt0 13047 | . . . . . 6 ⊢ ((𝐵 / ;10) ∈ ℝ+ → 0 < (𝐵 / ;10)) | |
| 17 | 10, 16 | ax-mp 5 | . . . . 5 ⊢ 0 < (𝐵 / ;10) | 
| 18 | 15, 17 | pm3.2i 470 | . . . 4 ⊢ (0 ≤ 𝐴 ∧ 0 < (𝐵 / ;10)) | 
| 19 | addgegt0 11750 | . . . 4 ⊢ (((𝐴 ∈ ℝ ∧ (𝐵 / ;10) ∈ ℝ) ∧ (0 ≤ 𝐴 ∧ 0 < (𝐵 / ;10))) → 0 < (𝐴 + (𝐵 / ;10))) | |
| 20 | 14, 18, 19 | mp2an 692 | . . 3 ⊢ 0 < (𝐴 + (𝐵 / ;10)) | 
| 21 | elrp 13036 | . . 3 ⊢ ((𝐴 + (𝐵 / ;10)) ∈ ℝ+ ↔ ((𝐴 + (𝐵 / ;10)) ∈ ℝ ∧ 0 < (𝐴 + (𝐵 / ;10)))) | |
| 22 | 13, 20, 21 | mpbir2an 711 | . 2 ⊢ (𝐴 + (𝐵 / ;10)) ∈ ℝ+ | 
| 23 | 1, 22 | eqeltri 2837 | 1 ⊢ _𝐴𝐵 ∈ ℝ+ | 
| Colors of variables: wff setvar class | 
| Syntax hints: ∧ wa 395 ∈ wcel 2108 class class class wbr 5143 (class class class)co 7431 ℝcr 11154 0cc0 11155 1c1 11156 + caddc 11158 < clt 11295 ≤ cle 11296 / cdiv 11920 ℕcn 12266 ℕ0cn0 12526 ;cdc 12733 ℝ+crp 13034 _cdp2 32853 | 
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2007 ax-8 2110 ax-9 2118 ax-10 2141 ax-11 2157 ax-12 2177 ax-ext 2708 ax-sep 5296 ax-nul 5306 ax-pow 5365 ax-pr 5432 ax-un 7755 ax-resscn 11212 ax-1cn 11213 ax-icn 11214 ax-addcl 11215 ax-addrcl 11216 ax-mulcl 11217 ax-mulrcl 11218 ax-mulcom 11219 ax-addass 11220 ax-mulass 11221 ax-distr 11222 ax-i2m1 11223 ax-1ne0 11224 ax-1rid 11225 ax-rnegex 11226 ax-rrecex 11227 ax-cnre 11228 ax-pre-lttri 11229 ax-pre-lttrn 11230 ax-pre-ltadd 11231 ax-pre-mulgt0 11232 | 
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2065 df-mo 2540 df-eu 2569 df-clab 2715 df-cleq 2729 df-clel 2816 df-nfc 2892 df-ne 2941 df-nel 3047 df-ral 3062 df-rex 3071 df-rmo 3380 df-reu 3381 df-rab 3437 df-v 3482 df-sbc 3789 df-csb 3900 df-dif 3954 df-un 3956 df-in 3958 df-ss 3968 df-pss 3971 df-nul 4334 df-if 4526 df-pw 4602 df-sn 4627 df-pr 4629 df-op 4633 df-uni 4908 df-iun 4993 df-br 5144 df-opab 5206 df-mpt 5226 df-tr 5260 df-id 5578 df-eprel 5584 df-po 5592 df-so 5593 df-fr 5637 df-we 5639 df-xp 5691 df-rel 5692 df-cnv 5693 df-co 5694 df-dm 5695 df-rn 5696 df-res 5697 df-ima 5698 df-pred 6321 df-ord 6387 df-on 6388 df-lim 6389 df-suc 6390 df-iota 6514 df-fun 6563 df-fn 6564 df-f 6565 df-f1 6566 df-fo 6567 df-f1o 6568 df-fv 6569 df-riota 7388 df-ov 7434 df-oprab 7435 df-mpo 7436 df-om 7888 df-2nd 8015 df-frecs 8306 df-wrecs 8337 df-recs 8411 df-rdg 8450 df-er 8745 df-en 8986 df-dom 8987 df-sdom 8988 df-pnf 11297 df-mnf 11298 df-xr 11299 df-ltxr 11300 df-le 11301 df-sub 11494 df-neg 11495 df-div 11921 df-nn 12267 df-2 12329 df-3 12330 df-4 12331 df-5 12332 df-6 12333 df-7 12334 df-8 12335 df-9 12336 df-n0 12527 df-dec 12734 df-rp 13035 df-dp2 32854 | 
| This theorem is referenced by: rpdpcl 32885 dpexpp1 32890 hgt750lemd 34663 hgt750lem 34666 hgt750lem2 34667 hgt750leme 34673 | 
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