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| Mirrors > Home > MPE Home > Th. List > Mathboxes > dp2ltsuc | Structured version Visualization version GIF version | ||
| Description: Comparing a decimal fraction with the next integer. (Contributed by Thierry Arnoux, 25-Dec-2021.) |
| Ref | Expression |
|---|---|
| dp2lt.a | ⊢ 𝐴 ∈ ℕ0 |
| dp2lt.b | ⊢ 𝐵 ∈ ℝ+ |
| dp2ltsuc.1 | ⊢ 𝐵 < ;10 |
| dp2ltsuc.2 | ⊢ (𝐴 + 1) = 𝐶 |
| Ref | Expression |
|---|---|
| dp2ltsuc | ⊢ _𝐴𝐵 < 𝐶 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | dp2ltsuc.1 | . . . . 5 ⊢ 𝐵 < ;10 | |
| 2 | dp2lt.b | . . . . . . 7 ⊢ 𝐵 ∈ ℝ+ | |
| 3 | rpre 13132 | . . . . . . 7 ⊢ (𝐵 ∈ ℝ+ → 𝐵 ∈ ℝ) | |
| 4 | 2, 3 | ax-mp 5 | . . . . . 6 ⊢ 𝐵 ∈ ℝ |
| 5 | 10re 12840 | . . . . . 6 ⊢ ;10 ∈ ℝ | |
| 6 | 10pos 12838 | . . . . . 6 ⊢ 0 < ;10 | |
| 7 | 4, 5, 5, 6 | ltdiv1ii 12249 | . . . . 5 ⊢ (𝐵 < ;10 ↔ (𝐵 / ;10) < (;10 / ;10)) |
| 8 | 1, 7 | mpbi 233 | . . . 4 ⊢ (𝐵 / ;10) < (;10 / ;10) |
| 9 | 5 | recni 11326 | . . . . 5 ⊢ ;10 ∈ ℂ |
| 10 | 10nn 12837 | . . . . . 6 ⊢ ;10 ∈ ℕ | |
| 11 | 10 | nnne0i 12381 | . . . . 5 ⊢ ;10 ≠ 0 |
| 12 | 9, 11 | dividi 12053 | . . . 4 ⊢ (;10 / ;10) = 1 |
| 13 | 8, 12 | breqtri 5129 | . . 3 ⊢ (𝐵 / ;10) < 1 |
| 14 | 4, 5, 11 | redivcli 12087 | . . . 4 ⊢ (𝐵 / ;10) ∈ ℝ |
| 15 | 1re 11311 | . . . 4 ⊢ 1 ∈ ℝ | |
| 16 | dp2lt.a | . . . . 5 ⊢ 𝐴 ∈ ℕ0 | |
| 17 | 16 | nn0rei 12620 | . . . 4 ⊢ 𝐴 ∈ ℝ |
| 18 | 14, 15, 17 | ltadd2i 11444 | . . 3 ⊢ ((𝐵 / ;10) < 1 ↔ (𝐴 + (𝐵 / ;10)) < (𝐴 + 1)) |
| 19 | 13, 18 | mpbi 233 | . 2 ⊢ (𝐴 + (𝐵 / ;10)) < (𝐴 + 1) |
| 20 | df-dp2 33484 | . 2 ⊢ _𝐴𝐵 = (𝐴 + (𝐵 / ;10)) | |
| 21 | dp2ltsuc.2 | . . 3 ⊢ (𝐴 + 1) = 𝐶 | |
| 22 | 21 | eqcomi 2769 | . 2 ⊢ 𝐶 = (𝐴 + 1) |
| 23 | 19, 20, 22 | 3brtr4i 5134 | 1 ⊢ _𝐴𝐵 < 𝐶 |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: = wceq 1569 ∈ wcel 2144 class class class wbr 5102 (class class class)co 7420 ℝcr 11202 0cc0 11203 1c1 11204 + caddc 11206 < clt 11346 / cdiv 11976 ℕ0cn0 12609 ;cdc 12817 ℝ+crp 13123 _cdp2 33483 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-10 2177 ax-11 2193 ax-12 2212 ax-ext 2732 ax-sep 5248 ax-nul 5259 ax-pow 5326 ax-pr 5390 ax-un 7751 ax-resscn 11260 ax-1cn 11261 ax-icn 11262 ax-addcl 11263 ax-addrcl 11264 ax-mulcl 11265 ax-mulrcl 11266 ax-mulcom 11267 ax-addass 11268 ax-mulass 11269 ax-distr 11270 ax-i2m1 11271 ax-1ne0 11272 ax-1rid 11273 ax-rnegex 11274 ax-rrecex 11275 ax-cnre 11276 ax-pre-lttri 11277 ax-pre-lttrn 11278 ax-pre-ltadd 11279 ax-pre-mulgt0 11280 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2099 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-nel 3062 df-ral 3077 df-rex 3087 df-rmo 3365 df-reu 3366 df-rab 3413 df-v 3452 df-sbc 3739 df-csb 3847 df-ss 3896 df-pss 4014 df-dif 4047 df-in 4091 df-un 4151 df-nul 4279 df-if 4482 df-pw 4558 df-sn 4585 df-pr 4587 df-op 4835 df-uni 4867 df-iun 4952 df-br 5103 df-opab 5167 df-mpt 5186 df-tr 5212 df-id 5545 df-eprel 5550 df-po 5558 df-so 5559 df-fr 5603 df-we 5605 df-xp 5656 df-rel 5657 df-cnv 5658 df-co 5659 df-dm 5660 df-rn 5661 df-res 5662 df-ima 5663 df-pred 6304 df-ord 6365 df-on 6366 df-lim 6367 df-suc 6368 df-iota 6494 df-fun 6540 df-fn 6541 df-f 6542 df-f1 6543 df-fo 6544 df-f1o 6545 df-fv 6546 df-riota 7377 df-ov 7423 df-oprab 7424 df-mpo 7425 df-om 7878 df-2nd 8002 df-frecs 8302 df-wrecs 8333 df-recs 8382 df-rdg 8421 df-er 8720 df-en 8977 df-dom 8978 df-sdom 8979 df-pnf 11348 df-mnf 11349 df-xr 11350 df-ltxr 11351 df-le 11352 df-sub 11546 df-neg 11547 df-div 11977 df-nn 12339 df-2 12408 df-3 12409 df-4 12410 df-5 12411 df-6 12412 df-7 12413 df-8 12414 df-9 12415 df-n0 12610 df-dec 12818 df-rp 13124 df-dp2 33484 |
| This theorem is used by: hgt750lem2 35327 |
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