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| Mirrors > Home > MPE Home > Th. List > Mathboxes > dp2lt10 | Structured version Visualization version GIF version | ||
| Description: Decimal fraction builds real numbers less than 10. (Contributed by Thierry Arnoux, 16-Dec-2021.) |
| Ref | Expression |
|---|---|
| dp2lt10.a | ⊢ 𝐴 ∈ ℕ0 |
| dp2lt10.b | ⊢ 𝐵 ∈ ℝ+ |
| dp2lt10.1 | ⊢ 𝐴 < ;10 |
| dp2lt10.2 | ⊢ 𝐵 < ;10 |
| Ref | Expression |
|---|---|
| dp2lt10 | ⊢ _𝐴𝐵 < ;10 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-dp2 33508 | . 2 ⊢ _𝐴𝐵 = (𝐴 + (𝐵 / ;10)) | |
| 2 | dp2lt10.1 | . . . . . 6 ⊢ 𝐴 < ;10 | |
| 3 | 9p1e10 12843 | . . . . . 6 ⊢ (9 + 1) = ;10 | |
| 4 | 2, 3 | breqtrri 5135 | . . . . 5 ⊢ 𝐴 < (9 + 1) |
| 5 | dp2lt10.a | . . . . . . 7 ⊢ 𝐴 ∈ ℕ0 | |
| 6 | 5 | nn0zi 12748 | . . . . . 6 ⊢ 𝐴 ∈ ℤ |
| 7 | 9nn0 12657 | . . . . . . 7 ⊢ 9 ∈ ℕ0 | |
| 8 | 7 | nn0zi 12748 | . . . . . 6 ⊢ 9 ∈ ℤ |
| 9 | zleltp1 12774 | . . . . . 6 ⊢ ((𝐴 ∈ ℤ ∧ 9 ∈ ℤ) → (𝐴 ≤ 9 ↔ 𝐴 < (9 + 1))) | |
| 10 | 6, 8, 9 | mp2an 705 | . . . . 5 ⊢ (𝐴 ≤ 9 ↔ 𝐴 < (9 + 1)) |
| 11 | 4, 10 | mpbir 234 | . . . 4 ⊢ 𝐴 ≤ 9 |
| 12 | dp2lt10.2 | . . . . 5 ⊢ 𝐵 < ;10 | |
| 13 | rpssre 13155 | . . . . . . 7 ⊢ ℝ+ ⊆ ℝ | |
| 14 | dp2lt10.b | . . . . . . 7 ⊢ 𝐵 ∈ ℝ+ | |
| 15 | 13, 14 | sselii 3910 | . . . . . 6 ⊢ 𝐵 ∈ ℝ |
| 16 | 10re 12864 | . . . . . . 7 ⊢ ;10 ∈ ℝ | |
| 17 | 10pos 12862 | . . . . . . 7 ⊢ 0 < ;10 | |
| 18 | 16, 17 | elrpii 13150 | . . . . . 6 ⊢ ;10 ∈ ℝ+ |
| 19 | divlt1lt 13218 | . . . . . 6 ⊢ ((𝐵 ∈ ℝ ∧ ;10 ∈ ℝ+) → ((𝐵 / ;10) < 1 ↔ 𝐵 < ;10)) | |
| 20 | 15, 18, 19 | mp2an 705 | . . . . 5 ⊢ ((𝐵 / ;10) < 1 ↔ 𝐵 < ;10) |
| 21 | 12, 20 | mpbir 234 | . . . 4 ⊢ (𝐵 / ;10) < 1 |
| 22 | 5 | nn0rei 12644 | . . . . . 6 ⊢ 𝐴 ∈ ℝ |
| 23 | 0re 11337 | . . . . . . . 8 ⊢ 0 ∈ ℝ | |
| 24 | 23, 17 | gtneii 11449 | . . . . . . 7 ⊢ ;10 ≠ 0 |
| 25 | 15, 16, 24 | redivcli 12111 | . . . . . 6 ⊢ (𝐵 / ;10) ∈ ℝ |
| 26 | 22, 25 | pm3.2i 476 | . . . . 5 ⊢ (𝐴 ∈ ℝ ∧ (𝐵 / ;10) ∈ ℝ) |
| 27 | 9re 12469 | . . . . . 6 ⊢ 9 ∈ ℝ | |
| 28 | 1re 11335 | . . . . . 6 ⊢ 1 ∈ ℝ | |
| 29 | 27, 28 | pm3.2i 476 | . . . . 5 ⊢ (9 ∈ ℝ ∧ 1 ∈ ℝ) |
| 30 | leltadd 11827 | . . . . 5 ⊢ (((𝐴 ∈ ℝ ∧ (𝐵 / ;10) ∈ ℝ) ∧ (9 ∈ ℝ ∧ 1 ∈ ℝ)) → ((𝐴 ≤ 9 ∧ (𝐵 / ;10) < 1) → (𝐴 + (𝐵 / ;10)) < (9 + 1))) | |
| 31 | 26, 29, 30 | mp2an 705 | . . . 4 ⊢ ((𝐴 ≤ 9 ∧ (𝐵 / ;10) < 1) → (𝐴 + (𝐵 / ;10)) < (9 + 1)) |
| 32 | 11, 21, 31 | mp2an 705 | . . 3 ⊢ (𝐴 + (𝐵 / ;10)) < (9 + 1) |
| 33 | 32, 3 | breqtri 5133 | . 2 ⊢ (𝐴 + (𝐵 / ;10)) < ;10 |
| 34 | 1, 33 | eqbrtri 5129 | 1 ⊢ _𝐴𝐵 < ;10 |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ↔ wb 209 ∧ wa 401 ∈ wcel 2147 class class class wbr 5106 (class class class)co 7443 ℝcr 11226 0cc0 11227 1c1 11228 + caddc 11230 < clt 11370 ≤ cle 11371 / cdiv 12000 9c9 12431 ℕ0cn0 12633 ℤcz 12720 ;cdc 12841 ℝ+crp 13147 _cdp2 33507 |
| 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 5252 ax-nul 5263 ax-pow 5331 ax-pr 5395 ax-un 7775 ax-resscn 11284 ax-1cn 11285 ax-icn 11286 ax-addcl 11287 ax-addrcl 11288 ax-mulcl 11289 ax-mulrcl 11290 ax-mulcom 11291 ax-addass 11292 ax-mulass 11293 ax-distr 11294 ax-i2m1 11295 ax-1ne0 11296 ax-1rid 11297 ax-rnegex 11298 ax-rrecex 11299 ax-cnre 11300 ax-pre-lttri 11301 ax-pre-lttrn 11302 ax-pre-ltadd 11303 ax-pre-mulgt0 11304 |
| 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 5171 df-mpt 5190 df-tr 5216 df-id 5550 df-eprel 5555 df-po 5563 df-so 5564 df-fr 5608 df-we 5610 df-xp 5661 df-rel 5662 df-cnv 5663 df-co 5664 df-dm 5665 df-rn 5666 df-res 5667 df-ima 5668 df-pred 6322 df-ord 6383 df-on 6384 df-lim 6385 df-suc 6386 df-iota 6512 df-fun 6560 df-fn 6561 df-f 6562 df-f1 6563 df-fo 6564 df-f1o 6565 df-fv 6566 df-riota 7400 df-ov 7446 df-oprab 7447 df-mpo 7448 df-om 7902 df-2nd 8026 df-frecs 8327 df-wrecs 8358 df-recs 8407 df-rdg 8446 df-er 8745 df-en 9002 df-dom 9003 df-sdom 9004 df-pnf 11372 df-mnf 11373 df-xr 11374 df-ltxr 11375 df-le 11376 df-sub 11570 df-neg 11571 df-div 12001 df-nn 12363 df-2 12432 df-3 12433 df-4 12434 df-5 12435 df-6 12436 df-7 12437 df-8 12438 df-9 12439 df-n0 12634 df-z 12721 df-dec 12842 df-rp 13148 df-dp2 33508 |
| This theorem is used by: hgt750lem 35350 hgt750lem2 35351 |
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