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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 13029 | . . . . . . 7 ⊢ (𝐵 ∈ ℝ+ → 𝐵 ∈ ℝ) | |
| 4 | 2, 3 | ax-mp 5 | . . . . . 6 ⊢ 𝐵 ∈ ℝ |
| 5 | 10re 12738 | . . . . . 6 ⊢ ;10 ∈ ℝ | |
| 6 | 10pos 12736 | . . . . . 6 ⊢ 0 < ;10 | |
| 7 | 4, 5, 5, 6 | ltdiv1ii 12148 | . . . . 5 ⊢ (𝐵 < ;10 ↔ (𝐵 / ;10) < (;10 / ;10)) |
| 8 | 1, 7 | mpbi 233 | . . . 4 ⊢ (𝐵 / ;10) < (;10 / ;10) |
| 9 | 5 | recni 11227 | . . . . 5 ⊢ ;10 ∈ ℂ |
| 10 | 10nn 12735 | . . . . . 6 ⊢ ;10 ∈ ℕ | |
| 11 | 10 | nnne0i 12280 | . . . . 5 ⊢ ;10 ≠ 0 |
| 12 | 9, 11 | dividi 11952 | . . . 4 ⊢ (;10 / ;10) = 1 |
| 13 | 8, 12 | breqtri 5136 | . . 3 ⊢ (𝐵 / ;10) < 1 |
| 14 | 4, 5, 11 | redivcli 11986 | . . . 4 ⊢ (𝐵 / ;10) ∈ ℝ |
| 15 | 1re 11212 | . . . 4 ⊢ 1 ∈ ℝ | |
| 16 | dp2lt.a | . . . . 5 ⊢ 𝐴 ∈ ℕ0 | |
| 17 | 16 | nn0rei 12519 | . . . 4 ⊢ 𝐴 ∈ ℝ |
| 18 | 14, 15, 17 | ltadd2i 11345 | . . 3 ⊢ ((𝐵 / ;10) < 1 ↔ (𝐴 + (𝐵 / ;10)) < (𝐴 + 1)) |
| 19 | 13, 18 | mpbi 233 | . 2 ⊢ (𝐴 + (𝐵 / ;10)) < (𝐴 + 1) |
| 20 | df-dp2 33200 | . 2 ⊢ _𝐴𝐵 = (𝐴 + (𝐵 / ;10)) | |
| 21 | dp2ltsuc.2 | . . 3 ⊢ (𝐴 + 1) = 𝐶 | |
| 22 | 21 | eqcomi 2772 | . 2 ⊢ 𝐶 = (𝐴 + 1) |
| 23 | 19, 20, 22 | 3brtr4i 5141 | 1 ⊢ _𝐴𝐵 < 𝐶 |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: = wceq 1570 ∈ wcel 2143 class class class wbr 5109 (class class class)co 7410 ℝcr 11103 0cc0 11104 1c1 11105 + caddc 11107 < clt 11247 / cdiv 11875 ℕ0cn0 12508 ;cdc 12715 ℝ+crp 13020 _cdp2 33199 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1825 ax-4 1839 ax-5 1940 ax-6 1997 ax-7 2038 ax-8 2145 ax-9 2153 ax-10 2176 ax-11 2192 ax-12 2213 ax-ext 2735 ax-sep 5257 ax-nul 5269 ax-pow 5336 ax-pr 5404 ax-un 7732 ax-resscn 11161 ax-1cn 11162 ax-icn 11163 ax-addcl 11164 ax-addrcl 11165 ax-mulcl 11166 ax-mulrcl 11167 ax-mulcom 11168 ax-addass 11169 ax-mulass 11170 ax-distr 11171 ax-i2m1 11172 ax-1ne0 11173 ax-1rid 11174 ax-rnegex 11175 ax-rrecex 11176 ax-cnre 11177 ax-pre-lttri 11178 ax-pre-lttrn 11179 ax-pre-ltadd 11180 ax-pre-mulgt0 11181 |
| This proof depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1810 df-nf 1814 df-sb 2097 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2838 df-nfc 2912 df-ne 2959 df-nel 3065 df-ral 3080 df-rex 3090 df-rmo 3369 df-reu 3370 df-rab 3417 df-v 3457 df-sbc 3745 df-csb 3854 df-dif 3908 df-un 3910 df-in 3912 df-ss 3922 df-pss 3925 df-nul 4287 df-if 4488 df-pw 4564 df-sn 4590 df-pr 4592 df-op 4596 df-uni 4873 df-iun 4958 df-br 5110 df-opab 5174 df-mpt 5193 df-tr 5219 df-id 5556 df-eprel 5561 df-po 5569 df-so 5570 df-fr 5614 df-we 5616 df-xp 5667 df-rel 5668 df-cnv 5669 df-co 5670 df-dm 5671 df-rn 5672 df-res 5673 df-ima 5674 df-pred 6302 df-ord 6363 df-on 6364 df-lim 6365 df-suc 6366 df-iota 6492 df-fun 6538 df-fn 6539 df-f 6540 df-f1 6541 df-fo 6542 df-f1o 6543 df-fv 6544 df-riota 7367 df-ov 7413 df-oprab 7414 df-mpo 7415 df-om 7859 df-2nd 7983 df-frecs 8274 df-wrecs 8305 df-recs 8354 df-rdg 8393 df-er 8690 df-en 8940 df-dom 8941 df-sdom 8942 df-pnf 11249 df-mnf 11250 df-xr 11251 df-ltxr 11252 df-le 11253 df-sub 11447 df-neg 11448 df-div 11876 df-nn 12238 df-2 12307 df-3 12308 df-4 12309 df-5 12310 df-6 12311 df-7 12312 df-8 12313 df-9 12314 df-n0 12509 df-dec 12716 df-rp 13021 df-dp2 33200 |
| This theorem is used by: hgt750lem2 35048 |
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