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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 33228 | . 2 ⊢ _𝐴𝐵 = (𝐴 + (𝐵 / ;10)) | |
| 2 | dp2lt10.1 | . . . . . 6 ⊢ 𝐴 < ;10 | |
| 3 | 9p1e10 12731 | . . . . . 6 ⊢ (9 + 1) = ;10 | |
| 4 | 2, 3 | breqtrri 5143 | . . . . 5 ⊢ 𝐴 < (9 + 1) |
| 5 | dp2lt10.a | . . . . . . 7 ⊢ 𝐴 ∈ ℕ0 | |
| 6 | 5 | nn0zi 12637 | . . . . . 6 ⊢ 𝐴 ∈ ℤ |
| 7 | 9nn0 12546 | . . . . . . 7 ⊢ 9 ∈ ℕ0 | |
| 8 | 7 | nn0zi 12637 | . . . . . 6 ⊢ 9 ∈ ℤ |
| 9 | zleltp1 12663 | . . . . . 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 13042 | . . . . . . 7 ⊢ ℝ+ ⊆ ℝ | |
| 14 | dp2lt10.b | . . . . . . 7 ⊢ 𝐵 ∈ ℝ+ | |
| 15 | 13, 14 | sselii 3937 | . . . . . 6 ⊢ 𝐵 ∈ ℝ |
| 16 | 10re 12752 | . . . . . . 7 ⊢ ;10 ∈ ℝ | |
| 17 | 10pos 12750 | . . . . . . 7 ⊢ 0 < ;10 | |
| 18 | 16, 17 | elrpii 13037 | . . . . . 6 ⊢ ;10 ∈ ℝ+ |
| 19 | divlt1lt 13105 | . . . . . 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 12533 | . . . . . 6 ⊢ 𝐴 ∈ ℝ |
| 23 | 0re 11228 | . . . . . . . 8 ⊢ 0 ∈ ℝ | |
| 24 | 23, 17 | gtneii 11340 | . . . . . . 7 ⊢ ;10 ≠ 0 |
| 25 | 15, 16, 24 | redivcli 12000 | . . . . . 6 ⊢ (𝐵 / ;10) ∈ ℝ |
| 26 | 22, 25 | pm3.2i 476 | . . . . 5 ⊢ (𝐴 ∈ ℝ ∧ (𝐵 / ;10) ∈ ℝ) |
| 27 | 9re 12358 | . . . . . 6 ⊢ 9 ∈ ℝ | |
| 28 | 1re 11226 | . . . . . 6 ⊢ 1 ∈ ℝ | |
| 29 | 27, 28 | pm3.2i 476 | . . . . 5 ⊢ (9 ∈ ℝ ∧ 1 ∈ ℝ) |
| 30 | leltadd 11716 | . . . . 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 5141 | . 2 ⊢ (𝐴 + (𝐵 / ;10)) < ;10 |
| 34 | 1, 33 | eqbrtri 5137 | 1 ⊢ _𝐴𝐵 < ;10 |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ↔ wb 209 ∧ wa 401 ∈ wcel 2146 class class class wbr 5114 (class class class)co 7423 ℝcr 11117 0cc0 11118 1c1 11119 + caddc 11121 < clt 11261 ≤ cle 11262 / cdiv 11889 9c9 12320 ℕ0cn0 12522 ℤcz 12609 ;cdc 12729 ℝ+crp 13034 _cdp2 33227 |
| 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 1943 ax-6 2000 ax-7 2041 ax-8 2148 ax-9 2156 ax-10 2179 ax-11 2195 ax-12 2216 ax-ext 2738 ax-sep 5262 ax-nul 5274 ax-pow 5341 ax-pr 5409 ax-un 7745 ax-resscn 11175 ax-1cn 11176 ax-icn 11177 ax-addcl 11178 ax-addrcl 11179 ax-mulcl 11180 ax-mulrcl 11181 ax-mulcom 11182 ax-addass 11183 ax-mulass 11184 ax-distr 11185 ax-i2m1 11186 ax-1ne0 11187 ax-1rid 11188 ax-rnegex 11189 ax-rrecex 11190 ax-cnre 11191 ax-pre-lttri 11192 ax-pre-lttrn 11193 ax-pre-ltadd 11194 ax-pre-mulgt0 11195 |
| 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 2100 df-mo 2570 df-eu 2600 df-clab 2745 df-cleq 2758 df-clel 2841 df-nfc 2915 df-ne 2962 df-nel 3068 df-ral 3083 df-rex 3093 df-rmo 3372 df-reu 3373 df-rab 3420 df-v 3460 df-sbc 3748 df-csb 3857 df-dif 3911 df-un 3913 df-in 3915 df-ss 3925 df-pss 3928 df-nul 4290 df-if 4493 df-pw 4569 df-sn 4595 df-pr 4597 df-op 4601 df-uni 4878 df-iun 4963 df-br 5115 df-opab 5179 df-mpt 5198 df-tr 5224 df-id 5561 df-eprel 5566 df-po 5574 df-so 5575 df-fr 5619 df-we 5621 df-xp 5672 df-rel 5673 df-cnv 5674 df-co 5675 df-dm 5676 df-rn 5677 df-res 5678 df-ima 5679 df-pred 6309 df-ord 6370 df-on 6371 df-lim 6372 df-suc 6373 df-iota 6499 df-fun 6545 df-fn 6546 df-f 6547 df-f1 6548 df-fo 6549 df-f1o 6550 df-fv 6551 df-riota 7380 df-ov 7426 df-oprab 7427 df-mpo 7428 df-om 7872 df-2nd 7996 df-frecs 8287 df-wrecs 8318 df-recs 8367 df-rdg 8406 df-er 8703 df-en 8953 df-dom 8954 df-sdom 8955 df-pnf 11263 df-mnf 11264 df-xr 11265 df-ltxr 11266 df-le 11267 df-sub 11461 df-neg 11462 df-div 11890 df-nn 12252 df-2 12321 df-3 12322 df-4 12323 df-5 12324 df-6 12325 df-7 12326 df-8 12327 df-9 12328 df-n0 12523 df-z 12610 df-dec 12730 df-rp 13035 df-dp2 33228 |
| This theorem is used by: hgt750lem 35070 hgt750lem2 35071 |
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