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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 13110 | . . . . . . 7 ⊢ (𝐵 ∈ ℝ+ → 𝐵 ∈ ℝ) | |
| 4 | 2, 3 | ax-mp 5 | . . . . . 6 ⊢ 𝐵 ∈ ℝ |
| 5 | 10re 12818 | . . . . . 6 ⊢ ;10 ∈ ℝ | |
| 6 | 10pos 12816 | . . . . . 6 ⊢ 0 < ;10 | |
| 7 | 4, 5, 5, 6 | ltdiv1ii 12227 | . . . . 5 ⊢ (𝐵 < ;10 ↔ (𝐵 / ;10) < (;10 / ;10)) |
| 8 | 1, 7 | mpbi 233 | . . . 4 ⊢ (𝐵 / ;10) < (;10 / ;10) |
| 9 | 5 | recni 11304 | . . . . 5 ⊢ ;10 ∈ ℂ |
| 10 | 10nn 12815 | . . . . . 6 ⊢ ;10 ∈ ℕ | |
| 11 | 10 | nnne0i 12359 | . . . . 5 ⊢ ;10 ≠ 0 |
| 12 | 9, 11 | dividi 12031 | . . . 4 ⊢ (;10 / ;10) = 1 |
| 13 | 8, 12 | breqtri 5130 | . . 3 ⊢ (𝐵 / ;10) < 1 |
| 14 | 4, 5, 11 | redivcli 12065 | . . . 4 ⊢ (𝐵 / ;10) ∈ ℝ |
| 15 | 1re 11289 | . . . 4 ⊢ 1 ∈ ℝ | |
| 16 | dp2lt.a | . . . . 5 ⊢ 𝐴 ∈ ℕ0 | |
| 17 | 16 | nn0rei 12598 | . . . 4 ⊢ 𝐴 ∈ ℝ |
| 18 | 14, 15, 17 | ltadd2i 11422 | . . 3 ⊢ ((𝐵 / ;10) < 1 ↔ (𝐴 + (𝐵 / ;10)) < (𝐴 + 1)) |
| 19 | 13, 18 | mpbi 233 | . 2 ⊢ (𝐴 + (𝐵 / ;10)) < (𝐴 + 1) |
| 20 | df-dp2 33420 | . 2 ⊢ _𝐴𝐵 = (𝐴 + (𝐵 / ;10)) | |
| 21 | dp2ltsuc.2 | . . 3 ⊢ (𝐴 + 1) = 𝐶 | |
| 22 | 21 | eqcomi 2770 | . 2 ⊢ 𝐶 = (𝐴 + 1) |
| 23 | 19, 20, 22 | 3brtr4i 5135 | 1 ⊢ _𝐴𝐵 < 𝐶 |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: = wceq 1570 ∈ wcel 2145 class class class wbr 5103 (class class class)co 7412 ℝcr 11180 0cc0 11181 1c1 11182 + caddc 11184 < clt 11324 / cdiv 11954 ℕ0cn0 12587 ;cdc 12795 ℝ+crp 13101 _cdp2 33419 |
| 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 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2213 ax-ext 2733 ax-sep 5249 ax-nul 5260 ax-pow 5327 ax-pr 5391 ax-un 7740 ax-resscn 11238 ax-1cn 11239 ax-icn 11240 ax-addcl 11241 ax-addrcl 11242 ax-mulcl 11243 ax-mulrcl 11244 ax-mulcom 11245 ax-addass 11246 ax-mulass 11247 ax-distr 11248 ax-i2m1 11249 ax-1ne0 11250 ax-1rid 11251 ax-rnegex 11252 ax-rrecex 11253 ax-cnre 11254 ax-pre-lttri 11255 ax-pre-lttrn 11256 ax-pre-ltadd 11257 ax-pre-mulgt0 11258 |
| 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 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ne 2957 df-nel 3063 df-ral 3078 df-rex 3088 df-rmo 3366 df-reu 3367 df-rab 3414 df-v 3453 df-sbc 3740 df-csb 3848 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-pss 3919 df-nul 4280 df-if 4483 df-pw 4559 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-iun 4953 df-br 5104 df-opab 5168 df-mpt 5187 df-tr 5213 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 6297 df-ord 6358 df-on 6359 df-lim 6360 df-suc 6361 df-iota 6487 df-fun 6533 df-fn 6534 df-f 6535 df-f1 6536 df-fo 6537 df-f1o 6538 df-fv 6539 df-riota 7369 df-ov 7415 df-oprab 7416 df-mpo 7417 df-om 7867 df-2nd 7991 df-frecs 8283 df-wrecs 8314 df-recs 8363 df-rdg 8402 df-er 8701 df-en 8958 df-dom 8959 df-sdom 8960 df-pnf 11326 df-mnf 11327 df-xr 11328 df-ltxr 11329 df-le 11330 df-sub 11524 df-neg 11525 df-div 11955 df-nn 12317 df-2 12386 df-3 12387 df-4 12388 df-5 12389 df-6 12390 df-7 12391 df-8 12392 df-9 12393 df-n0 12588 df-dec 12796 df-rp 13102 df-dp2 33420 |
| This theorem is used by: hgt750lem2 35264 |
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