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| Mirrors > Home > MPE Home > Th. List > Mathboxes > dplti | Structured version Visualization version GIF version | ||
| Description: Comparing a decimal expansions with the next higher integer. (Contributed by Thierry Arnoux, 16-Dec-2021.) |
| Ref | Expression |
|---|---|
| dplti.a | ⊢ 𝐴 ∈ ℕ0 |
| dplti.b | ⊢ 𝐵 ∈ ℝ+ |
| dplti.c | ⊢ 𝐶 ∈ ℕ0 |
| dplti.1 | ⊢ 𝐵 < ;10 |
| dplti.2 | ⊢ (𝐴 + 1) = 𝐶 |
| Ref | Expression |
|---|---|
| dplti | ⊢ (𝐴.𝐵) < 𝐶 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | dplti.a | . . . 4 ⊢ 𝐴 ∈ ℕ0 | |
| 2 | dplti.b | . . . . 5 ⊢ 𝐵 ∈ ℝ+ | |
| 3 | rpre 13013 | . . . . 5 ⊢ (𝐵 ∈ ℝ+ → 𝐵 ∈ ℝ) | |
| 4 | 2, 3 | ax-mp 5 | . . . 4 ⊢ 𝐵 ∈ ℝ |
| 5 | 1, 4 | dpval2 33120 | . . 3 ⊢ (𝐴.𝐵) = (𝐴 + (𝐵 / ;10)) |
| 6 | dplti.1 | . . . . 5 ⊢ 𝐵 < ;10 | |
| 7 | 10re 12722 | . . . . . . . 8 ⊢ ;10 ∈ ℝ | |
| 8 | 10pos 12720 | . . . . . . . 8 ⊢ 0 < ;10 | |
| 9 | 7, 8 | pm3.2i 475 | . . . . . . 7 ⊢ (;10 ∈ ℝ ∧ 0 < ;10) |
| 10 | elrp 13006 | . . . . . . 7 ⊢ (;10 ∈ ℝ+ ↔ (;10 ∈ ℝ ∧ 0 < ;10)) | |
| 11 | 9, 10 | mpbir 234 | . . . . . 6 ⊢ ;10 ∈ ℝ+ |
| 12 | divlt1lt 13075 | . . . . . 6 ⊢ ((𝐵 ∈ ℝ ∧ ;10 ∈ ℝ+) → ((𝐵 / ;10) < 1 ↔ 𝐵 < ;10)) | |
| 13 | 4, 11, 12 | mp2an 704 | . . . . 5 ⊢ ((𝐵 / ;10) < 1 ↔ 𝐵 < ;10) |
| 14 | 6, 13 | mpbir 234 | . . . 4 ⊢ (𝐵 / ;10) < 1 |
| 15 | 0re 11198 | . . . . . . 7 ⊢ 0 ∈ ℝ | |
| 16 | 15, 8 | gtneii 11310 | . . . . . 6 ⊢ ;10 ≠ 0 |
| 17 | 4, 7, 16 | redivcli 11970 | . . . . 5 ⊢ (𝐵 / ;10) ∈ ℝ |
| 18 | 1re 11196 | . . . . 5 ⊢ 1 ∈ ℝ | |
| 19 | nn0ssre 12496 | . . . . . 6 ⊢ ℕ0 ⊆ ℝ | |
| 20 | 19, 1 | sselii 3936 | . . . . 5 ⊢ 𝐴 ∈ ℝ |
| 21 | 17, 18, 20 | ltadd2i 11329 | . . . 4 ⊢ ((𝐵 / ;10) < 1 ↔ (𝐴 + (𝐵 / ;10)) < (𝐴 + 1)) |
| 22 | 14, 21 | mpbi 233 | . . 3 ⊢ (𝐴 + (𝐵 / ;10)) < (𝐴 + 1) |
| 23 | 5, 22 | eqbrtri 5125 | . 2 ⊢ (𝐴.𝐵) < (𝐴 + 1) |
| 24 | dplti.2 | . 2 ⊢ (𝐴 + 1) = 𝐶 | |
| 25 | 23, 24 | breqtri 5129 | 1 ⊢ (𝐴.𝐵) < 𝐶 |
| Colors of variables: wff setvar class |
| Syntax hints: ↔ wb 209 ∧ wa 400 = wceq 1563 ∈ wcel 2145 class class class wbr 5104 (class class class)co 7400 ℝcr 11087 0cc0 11088 1c1 11089 + caddc 11091 < clt 11231 / cdiv 11859 ℕ0cn0 12492 ;cdc 12699 ℝ+crp 13004 .cdp 33115 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1818 ax-4 1832 ax-5 1933 ax-6 1990 ax-7 2031 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2215 ax-ext 2737 ax-sep 5250 ax-nul 5260 ax-pow 5326 ax-pr 5394 ax-un 7722 ax-resscn 11145 ax-1cn 11146 ax-icn 11147 ax-addcl 11148 ax-addrcl 11149 ax-mulcl 11150 ax-mulrcl 11151 ax-mulcom 11152 ax-addass 11153 ax-mulass 11154 ax-distr 11155 ax-i2m1 11156 ax-1ne0 11157 ax-1rid 11158 ax-rnegex 11159 ax-rrecex 11160 ax-cnre 11161 ax-pre-lttri 11162 ax-pre-lttrn 11163 ax-pre-ltadd 11164 ax-pre-mulgt0 11165 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1102 df-3an 1103 df-tru 1566 df-fal 1576 df-ex 1803 df-nf 1807 df-sb 2094 df-mo 2569 df-eu 2599 df-clab 2744 df-cleq 2757 df-clel 2840 df-nfc 2914 df-ne 2961 df-nel 3065 df-ral 3080 df-rex 3090 df-rmo 3370 df-reu 3371 df-rab 3418 df-v 3459 df-sbc 3748 df-csb 3856 df-dif 3910 df-un 3912 df-in 3914 df-ss 3924 df-pss 3927 df-nul 4289 df-if 4484 df-pw 4560 df-sn 4586 df-pr 4588 df-op 4592 df-uni 4868 df-iun 4953 df-br 5105 df-opab 5167 df-mpt 5186 df-tr 5212 df-id 5546 df-eprel 5551 df-po 5559 df-so 5560 df-fr 5604 df-we 5606 df-xp 5657 df-rel 5658 df-cnv 5659 df-co 5660 df-dm 5661 df-rn 5662 df-res 5663 df-ima 5664 df-pred 6291 df-ord 6352 df-on 6353 df-lim 6354 df-suc 6355 df-iota 6481 df-fun 6527 df-fn 6528 df-f 6529 df-f1 6530 df-fo 6531 df-f1o 6532 df-fv 6533 df-riota 7357 df-ov 7403 df-oprab 7404 df-mpo 7405 df-om 7851 df-2nd 7975 df-frecs 8266 df-wrecs 8297 df-recs 8346 df-rdg 8385 df-er 8682 df-en 8932 df-dom 8933 df-sdom 8934 df-pnf 11233 df-mnf 11234 df-xr 11235 df-ltxr 11236 df-le 11237 df-sub 11431 df-neg 11432 df-div 11860 df-nn 12222 df-2 12291 df-3 12292 df-4 12293 df-5 12294 df-6 12295 df-7 12296 df-8 12297 df-9 12298 df-n0 12493 df-dec 12700 df-rp 13005 df-dp2 33099 df-dp 33116 |
| This theorem is referenced by: hgt750lem 34950 |
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