| Mathbox for Thierry Arnoux |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > Mathboxes > dp2lt | Structured version Visualization version GIF version | ||
| Description: Comparing two decimal fractions (equal unit places). (Contributed by Thierry Arnoux, 16-Dec-2021.) |
| Ref | Expression |
|---|---|
| dp2lt.a | ⊢ 𝐴 ∈ ℕ0 |
| dp2lt.b | ⊢ 𝐵 ∈ ℝ+ |
| dp2lt.c | ⊢ 𝐶 ∈ ℝ+ |
| dp2lt.l | ⊢ 𝐵 < 𝐶 |
| Ref | Expression |
|---|---|
| dp2lt | ⊢ _𝐴𝐵 < _𝐴𝐶 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | rpssre 13168 | . . . . . 6 ⊢ ℝ+ ⊆ ℝ | |
| 2 | dp2lt.b | . . . . . 6 ⊢ 𝐵 ∈ ℝ+ | |
| 3 | 1, 2 | sselii 3910 | . . . . 5 ⊢ 𝐵 ∈ ℝ |
| 4 | 10re 12877 | . . . . 5 ⊢ ;10 ∈ ℝ | |
| 5 | 0re 11349 | . . . . . 6 ⊢ 0 ∈ ℝ | |
| 6 | 10pos 12875 | . . . . . 6 ⊢ 0 < ;10 | |
| 7 | 5, 6 | gtneii 11461 | . . . . 5 ⊢ ;10 ≠ 0 |
| 8 | redivcl 12076 | . . . . 5 ⊢ ((𝐵 ∈ ℝ ∧ ;10 ∈ ℝ ∧ ;10 ≠ 0) → (𝐵 / ;10) ∈ ℝ) | |
| 9 | 3, 4, 7, 8 | mp3an 1491 | . . . 4 ⊢ (𝐵 / ;10) ∈ ℝ |
| 10 | dp2lt.c | . . . . . 6 ⊢ 𝐶 ∈ ℝ+ | |
| 11 | 1, 10 | sselii 3910 | . . . . 5 ⊢ 𝐶 ∈ ℝ |
| 12 | redivcl 12076 | . . . . 5 ⊢ ((𝐶 ∈ ℝ ∧ ;10 ∈ ℝ ∧ ;10 ≠ 0) → (𝐶 / ;10) ∈ ℝ) | |
| 13 | 11, 4, 7, 12 | mp3an 1491 | . . . 4 ⊢ (𝐶 / ;10) ∈ ℝ |
| 14 | dp2lt.a | . . . . 5 ⊢ 𝐴 ∈ ℕ0 | |
| 15 | 14 | nn0rei 12657 | . . . 4 ⊢ 𝐴 ∈ ℝ |
| 16 | 9, 13, 15 | 3pm3.2i 1358 | . . 3 ⊢ ((𝐵 / ;10) ∈ ℝ ∧ (𝐶 / ;10) ∈ ℝ ∧ 𝐴 ∈ ℝ) |
| 17 | dp2lt.l | . . . 4 ⊢ 𝐵 < 𝐶 | |
| 18 | 4, 6 | pm3.2i 476 | . . . . 5 ⊢ (;10 ∈ ℝ ∧ 0 < ;10) |
| 19 | ltdiv1 12221 | . . . . 5 ⊢ ((𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ ∧ (;10 ∈ ℝ ∧ 0 < ;10)) → (𝐵 < 𝐶 ↔ (𝐵 / ;10) < (𝐶 / ;10))) | |
| 20 | 3, 11, 18, 19 | mp3an 1491 | . . . 4 ⊢ (𝐵 < 𝐶 ↔ (𝐵 / ;10) < (𝐶 / ;10)) |
| 21 | 17, 20 | mpbi 233 | . . 3 ⊢ (𝐵 / ;10) < (𝐶 / ;10) |
| 22 | axltadd 11422 | . . . 4 ⊢ (((𝐵 / ;10) ∈ ℝ ∧ (𝐶 / ;10) ∈ ℝ ∧ 𝐴 ∈ ℝ) → ((𝐵 / ;10) < (𝐶 / ;10) → (𝐴 + (𝐵 / ;10)) < (𝐴 + (𝐶 / ;10)))) | |
| 23 | 22 | imp 412 | . . 3 ⊢ ((((𝐵 / ;10) ∈ ℝ ∧ (𝐶 / ;10) ∈ ℝ ∧ 𝐴 ∈ ℝ) ∧ (𝐵 / ;10) < (𝐶 / ;10)) → (𝐴 + (𝐵 / ;10)) < (𝐴 + (𝐶 / ;10))) |
| 24 | 16, 21, 23 | mp2an 705 | . 2 ⊢ (𝐴 + (𝐵 / ;10)) < (𝐴 + (𝐶 / ;10)) |
| 25 | df-dp2 33534 | . 2 ⊢ _𝐴𝐵 = (𝐴 + (𝐵 / ;10)) | |
| 26 | df-dp2 33534 | . 2 ⊢ _𝐴𝐶 = (𝐴 + (𝐶 / ;10)) | |
| 27 | 24, 25, 26 | 3brtr4i 5141 | 1 ⊢ _𝐴𝐵 < _𝐴𝐶 |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ↔ wb 209 ∧ wa 401 ∧ w3a 1103 ∈ wcel 2147 ≠ wne 2959 class class class wbr 5108 (class class class)co 7451 ℝcr 11238 0cc0 11239 1c1 11240 + caddc 11242 < clt 11382 / cdiv 12013 ℕ0cn0 12646 ;cdc 12854 ℝ+crp 13160 _cdp2 33533 |
| 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 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-10 2180 ax-11 2197 ax-12 2216 ax-ext 2735 ax-sep 5255 ax-nul 5266 ax-pow 5334 ax-pr 5398 ax-un 7783 ax-resscn 11296 ax-1cn 11297 ax-icn 11298 ax-addcl 11299 ax-addrcl 11300 ax-mulcl 11301 ax-mulrcl 11302 ax-mulcom 11303 ax-addass 11304 ax-mulass 11305 ax-distr 11306 ax-i2m1 11307 ax-1ne0 11308 ax-1rid 11309 ax-rnegex 11310 ax-rrecex 11311 ax-cnre 11312 ax-pre-lttri 11313 ax-pre-lttrn 11314 ax-pre-ltadd 11315 ax-pre-mulgt0 11316 |
| 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 2102 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2839 df-nfc 2913 df-ne 2960 df-nel 3066 df-ral 3081 df-rex 3091 df-rmo 3369 df-reu 3370 df-rab 3417 df-v 3456 df-sbc 3743 df-csb 3852 df-ss 3901 df-pss 4017 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-pw 4562 df-sn 4589 df-pr 4591 df-op 4841 df-uni 4873 df-iun 4958 df-br 5109 df-opab 5174 df-mpt 5193 df-tr 5219 df-id 5553 df-eprel 5558 df-po 5566 df-so 5567 df-fr 5611 df-we 5613 df-xp 5664 df-rel 5665 df-cnv 5666 df-co 5667 df-dm 5668 df-rn 5669 df-res 5670 df-ima 5671 df-pred 6330 df-ord 6391 df-on 6392 df-lim 6393 df-suc 6394 df-iota 6520 df-fun 6568 df-fn 6569 df-f 6570 df-f1 6571 df-fo 6572 df-f1o 6573 df-fv 6574 df-riota 7408 df-ov 7454 df-oprab 7455 df-mpo 7456 df-om 7912 df-2nd 8036 df-frecs 8337 df-wrecs 8368 df-recs 8417 df-rdg 8456 df-er 8755 df-en 9012 df-dom 9013 df-sdom 9014 df-pnf 11384 df-mnf 11385 df-xr 11386 df-ltxr 11387 df-le 11388 df-sub 11582 df-neg 11583 df-div 12014 df-nn 12376 df-2 12445 df-3 12446 df-4 12447 df-5 12448 df-6 12449 df-7 12450 df-8 12451 df-9 12452 df-n0 12647 df-dec 12855 df-rp 13161 df-dp2 33534 |
| This theorem is used by: dplt 33566 hgt750lem2 35392 |
| Copyright terms: Public domain | W3C validator |