| Mathbox for Thierry Arnoux |
< Previous
Next >
Nearby theorems |
||
| 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 12995 | . . . . 5 ⊢ (𝐵 ∈ ℝ+ → 𝐵 ∈ ℝ) | |
| 4 | 2, 3 | ax-mp 5 | . . . 4 ⊢ 𝐵 ∈ ℝ |
| 5 | 1, 4 | dpval2 33030 | . . 3 ⊢ (𝐴.𝐵) = (𝐴 + (𝐵 / ;10)) |
| 6 | dplti.1 | . . . . 5 ⊢ 𝐵 < ;10 | |
| 7 | 10re 12704 | . . . . . . . 8 ⊢ ;10 ∈ ℝ | |
| 8 | 10pos 12702 | . . . . . . . 8 ⊢ 0 < ;10 | |
| 9 | 7, 8 | pm3.2i 474 | . . . . . . 7 ⊢ (;10 ∈ ℝ ∧ 0 < ;10) |
| 10 | elrp 12988 | . . . . . . 7 ⊢ (;10 ∈ ℝ+ ↔ (;10 ∈ ℝ ∧ 0 < ;10)) | |
| 11 | 9, 10 | mpbir 233 | . . . . . 6 ⊢ ;10 ∈ ℝ+ |
| 12 | divlt1lt 13057 | . . . . . 6 ⊢ ((𝐵 ∈ ℝ ∧ ;10 ∈ ℝ+) → ((𝐵 / ;10) < 1 ↔ 𝐵 < ;10)) | |
| 13 | 4, 11, 12 | mp2an 702 | . . . . 5 ⊢ ((𝐵 / ;10) < 1 ↔ 𝐵 < ;10) |
| 14 | 6, 13 | mpbir 233 | . . . 4 ⊢ (𝐵 / ;10) < 1 |
| 15 | 0re 11176 | . . . . . . 7 ⊢ 0 ∈ ℝ | |
| 16 | 15, 8 | gtneii 11288 | . . . . . 6 ⊢ ;10 ≠ 0 |
| 17 | 4, 7, 16 | redivcli 11951 | . . . . 5 ⊢ (𝐵 / ;10) ∈ ℝ |
| 18 | 1re 11174 | . . . . 5 ⊢ 1 ∈ ℝ | |
| 19 | nn0ssre 12478 | . . . . . 6 ⊢ ℕ0 ⊆ ℝ | |
| 20 | 19, 1 | sselii 3931 | . . . . 5 ⊢ 𝐴 ∈ ℝ |
| 21 | 17, 18, 20 | ltadd2i 11307 | . . . 4 ⊢ ((𝐵 / ;10) < 1 ↔ (𝐴 + (𝐵 / ;10)) < (𝐴 + 1)) |
| 22 | 14, 21 | mpbi 232 | . . 3 ⊢ (𝐴 + (𝐵 / ;10)) < (𝐴 + 1) |
| 23 | 5, 22 | eqbrtri 5118 | . 2 ⊢ (𝐴.𝐵) < (𝐴 + 1) |
| 24 | dplti.2 | . 2 ⊢ (𝐴 + 1) = 𝐶 | |
| 25 | 23, 24 | breqtri 5122 | 1 ⊢ (𝐴.𝐵) < 𝐶 |
| Colors of variables: wff setvar class |
| Syntax hints: ↔ wb 208 ∧ wa 399 = wceq 1559 ∈ wcel 2141 class class class wbr 5097 (class class class)co 7390 ℝcr 11065 0cc0 11066 1c1 11067 + caddc 11069 < clt 11209 / cdiv 11837 ℕ0cn0 12474 ;cdc 12681 ℝ+crp 12986 .cdp 33025 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1814 ax-4 1828 ax-5 1929 ax-6 1986 ax-7 2027 ax-8 2143 ax-9 2151 ax-10 2174 ax-11 2190 ax-12 2211 ax-ext 2733 ax-sep 5243 ax-nul 5253 ax-pow 5319 ax-pr 5387 ax-un 7712 ax-resscn 11123 ax-1cn 11124 ax-icn 11125 ax-addcl 11126 ax-addrcl 11127 ax-mulcl 11128 ax-mulrcl 11129 ax-mulcom 11130 ax-addass 11131 ax-mulass 11132 ax-distr 11133 ax-i2m1 11134 ax-1ne0 11135 ax-1rid 11136 ax-rnegex 11137 ax-rrecex 11138 ax-cnre 11139 ax-pre-lttri 11140 ax-pre-lttrn 11141 ax-pre-ltadd 11142 ax-pre-mulgt0 11143 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3or 1098 df-3an 1099 df-tru 1562 df-fal 1572 df-ex 1799 df-nf 1803 df-sb 2090 df-mo 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ne 2957 df-nel 3061 df-ral 3076 df-rex 3086 df-rmo 3366 df-reu 3367 df-rab 3414 df-v 3455 df-sbc 3743 df-csb 3851 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-pss 3922 df-nul 4284 df-if 4478 df-pw 4554 df-sn 4580 df-pr 4582 df-op 4586 df-uni 4863 df-iun 4948 df-br 5098 df-opab 5160 df-mpt 5179 df-tr 5205 df-id 5538 df-eprel 5543 df-po 5551 df-so 5552 df-fr 5596 df-we 5598 df-xp 5649 df-rel 5650 df-cnv 5651 df-co 5652 df-dm 5653 df-rn 5654 df-res 5655 df-ima 5656 df-pred 6282 df-ord 6343 df-on 6344 df-lim 6345 df-suc 6346 df-iota 6471 df-fun 6517 df-fn 6518 df-f 6519 df-f1 6520 df-fo 6521 df-f1o 6522 df-fv 6523 df-riota 7347 df-ov 7393 df-oprab 7394 df-mpo 7395 df-om 7841 df-2nd 7965 df-frecs 8255 df-wrecs 8286 df-recs 8335 df-rdg 8374 df-er 8671 df-en 8921 df-dom 8922 df-sdom 8923 df-pnf 11211 df-mnf 11212 df-xr 11213 df-ltxr 11214 df-le 11215 df-sub 11409 df-neg 11410 df-div 11838 df-nn 12204 df-2 12273 df-3 12274 df-4 12275 df-5 12276 df-6 12277 df-7 12278 df-8 12279 df-9 12280 df-n0 12475 df-dec 12682 df-rp 12987 df-dp2 33009 df-dp 33026 |
| This theorem is referenced by: hgt750lem 34905 |
| Copyright terms: Public domain | W3C validator |