| 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 33008 | . 2 ⊢ _𝐴𝐵 = (𝐴 + (𝐵 / ;10)) | |
| 2 | rpdp2cl.a | . . . . 5 ⊢ 𝐴 ∈ ℕ0 | |
| 3 | 2 | nn0rei 12487 | . . . 4 ⊢ 𝐴 ∈ ℝ |
| 4 | rpssre 12996 | . . . . 5 ⊢ ℝ+ ⊆ ℝ | |
| 5 | rpdp2cl.b | . . . . . 6 ⊢ 𝐵 ∈ ℝ+ | |
| 6 | 10nn 12703 | . . . . . . 7 ⊢ ;10 ∈ ℕ | |
| 7 | nnrp 13000 | . . . . . . 7 ⊢ (;10 ∈ ℕ → ;10 ∈ ℝ+) | |
| 8 | 6, 7 | ax-mp 5 | . . . . . 6 ⊢ ;10 ∈ ℝ+ |
| 9 | rpdivcl 13015 | . . . . . 6 ⊢ ((𝐵 ∈ ℝ+ ∧ ;10 ∈ ℝ+) → (𝐵 / ;10) ∈ ℝ+) | |
| 10 | 5, 8, 9 | mp2an 702 | . . . . 5 ⊢ (𝐵 / ;10) ∈ ℝ+ |
| 11 | 4, 10 | sselii 3933 | . . . 4 ⊢ (𝐵 / ;10) ∈ ℝ |
| 12 | readdcl 11151 | . . . 4 ⊢ ((𝐴 ∈ ℝ ∧ (𝐵 / ;10) ∈ ℝ) → (𝐴 + (𝐵 / ;10)) ∈ ℝ) | |
| 13 | 3, 11, 12 | mp2an 702 | . . 3 ⊢ (𝐴 + (𝐵 / ;10)) ∈ ℝ |
| 14 | 3, 11 | pm3.2i 474 | . . . 4 ⊢ (𝐴 ∈ ℝ ∧ (𝐵 / ;10) ∈ ℝ) |
| 15 | 2 | nn0ge0i 12503 | . . . . 5 ⊢ 0 ≤ 𝐴 |
| 16 | rpgt0 13001 | . . . . . 6 ⊢ ((𝐵 / ;10) ∈ ℝ+ → 0 < (𝐵 / ;10)) | |
| 17 | 10, 16 | ax-mp 5 | . . . . 5 ⊢ 0 < (𝐵 / ;10) |
| 18 | 15, 17 | pm3.2i 474 | . . . 4 ⊢ (0 ≤ 𝐴 ∧ 0 < (𝐵 / ;10)) |
| 19 | addgegt0 11669 | . . . 4 ⊢ (((𝐴 ∈ ℝ ∧ (𝐵 / ;10) ∈ ℝ) ∧ (0 ≤ 𝐴 ∧ 0 < (𝐵 / ;10))) → 0 < (𝐴 + (𝐵 / ;10))) | |
| 20 | 14, 18, 19 | mp2an 702 | . . 3 ⊢ 0 < (𝐴 + (𝐵 / ;10)) |
| 21 | elrp 12990 | . . 3 ⊢ ((𝐴 + (𝐵 / ;10)) ∈ ℝ+ ↔ ((𝐴 + (𝐵 / ;10)) ∈ ℝ ∧ 0 < (𝐴 + (𝐵 / ;10)))) | |
| 22 | 13, 20, 21 | mpbir2an 721 | . 2 ⊢ (𝐴 + (𝐵 / ;10)) ∈ ℝ+ |
| 23 | 1, 22 | eqeltri 2857 | 1 ⊢ _𝐴𝐵 ∈ ℝ+ |
| Colors of variables: wff setvar class |
| Syntax hints: ∧ wa 399 ∈ wcel 2141 class class class wbr 5099 (class class class)co 7390 ℝcr 11067 0cc0 11068 1c1 11069 + caddc 11071 < clt 11211 ≤ cle 11212 / cdiv 11839 ℕcn 12205 ℕ0cn0 12476 ;cdc 12683 ℝ+crp 12988 _cdp2 33007 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1814 ax-4 1828 ax-5 1929 ax-6 1986 ax-7 2027 ax-8 2143 ax-9 2151 ax-10 2174 ax-11 2190 ax-12 2211 ax-ext 2733 ax-sep 5245 ax-nul 5255 ax-pow 5321 ax-pr 5389 ax-un 7712 ax-resscn 11125 ax-1cn 11126 ax-icn 11127 ax-addcl 11128 ax-addrcl 11129 ax-mulcl 11130 ax-mulrcl 11131 ax-mulcom 11132 ax-addass 11133 ax-mulass 11134 ax-distr 11135 ax-i2m1 11136 ax-1ne0 11137 ax-1rid 11138 ax-rnegex 11139 ax-rrecex 11140 ax-cnre 11141 ax-pre-lttri 11142 ax-pre-lttrn 11143 ax-pre-ltadd 11144 ax-pre-mulgt0 11145 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3or 1098 df-3an 1099 df-tru 1562 df-fal 1572 df-ex 1799 df-nf 1803 df-sb 2090 df-mo 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ne 2957 df-nel 3061 df-ral 3076 df-rex 3086 df-rmo 3366 df-reu 3367 df-rab 3414 df-v 3455 df-sbc 3745 df-csb 3853 df-dif 3907 df-un 3909 df-in 3911 df-ss 3921 df-pss 3924 df-nul 4286 df-if 4480 df-pw 4556 df-sn 4582 df-pr 4584 df-op 4588 df-uni 4865 df-iun 4950 df-br 5100 df-opab 5162 df-mpt 5181 df-tr 5207 df-id 5540 df-eprel 5545 df-po 5553 df-so 5554 df-fr 5598 df-we 5600 df-xp 5651 df-rel 5652 df-cnv 5653 df-co 5654 df-dm 5655 df-rn 5656 df-res 5657 df-ima 5658 df-pred 6282 df-ord 6343 df-on 6344 df-lim 6345 df-suc 6346 df-iota 6471 df-fun 6517 df-fn 6518 df-f 6519 df-f1 6520 df-fo 6521 df-f1o 6522 df-fv 6523 df-riota 7347 df-ov 7393 df-oprab 7394 df-mpo 7395 df-om 7841 df-2nd 7965 df-frecs 8255 df-wrecs 8286 df-recs 8335 df-rdg 8374 df-er 8671 df-en 8922 df-dom 8923 df-sdom 8924 df-pnf 11213 df-mnf 11214 df-xr 11215 df-ltxr 11216 df-le 11217 df-sub 11411 df-neg 11412 df-div 11840 df-nn 12206 df-2 12275 df-3 12276 df-4 12277 df-5 12278 df-6 12279 df-7 12280 df-8 12281 df-9 12282 df-n0 12477 df-dec 12684 df-rp 12989 df-dp2 33008 |
| This theorem is referenced by: rpdpcl 33039 dpexpp1 33044 hgt750lemd 34904 hgt750lem 34907 hgt750lem2 34908 hgt750leme 34914 |
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