Mathbox for Thierry Arnoux |
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Mirrors > Home > MPE Home > Th. List > Mathboxes > dpgti | Structured version Visualization version GIF version |
Description: Comparing a decimal expansions with the next lower integer. (Contributed by Thierry Arnoux, 16-Dec-2021.) |
Ref | Expression |
---|---|
dpgti.a | ⊢ 𝐴 ∈ ℕ0 |
dpgti.b | ⊢ 𝐵 ∈ ℝ+ |
Ref | Expression |
---|---|
dpgti | ⊢ 𝐴 < (𝐴.𝐵) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | dpgti.a | . . . 4 ⊢ 𝐴 ∈ ℕ0 | |
2 | 1 | nn0rei 12337 | . . 3 ⊢ 𝐴 ∈ ℝ |
3 | dpgti.b | . . . 4 ⊢ 𝐵 ∈ ℝ+ | |
4 | 10re 12549 | . . . . . 6 ⊢ ;10 ∈ ℝ | |
5 | 10pos 12547 | . . . . . 6 ⊢ 0 < ;10 | |
6 | 4, 5 | pm3.2i 471 | . . . . 5 ⊢ (;10 ∈ ℝ ∧ 0 < ;10) |
7 | elrp 12825 | . . . . 5 ⊢ (;10 ∈ ℝ+ ↔ (;10 ∈ ℝ ∧ 0 < ;10)) | |
8 | 6, 7 | mpbir 230 | . . . 4 ⊢ ;10 ∈ ℝ+ |
9 | rpdivcl 12848 | . . . 4 ⊢ ((𝐵 ∈ ℝ+ ∧ ;10 ∈ ℝ+) → (𝐵 / ;10) ∈ ℝ+) | |
10 | 3, 8, 9 | mp2an 689 | . . 3 ⊢ (𝐵 / ;10) ∈ ℝ+ |
11 | ltaddrp 12860 | . . 3 ⊢ ((𝐴 ∈ ℝ ∧ (𝐵 / ;10) ∈ ℝ+) → 𝐴 < (𝐴 + (𝐵 / ;10))) | |
12 | 2, 10, 11 | mp2an 689 | . 2 ⊢ 𝐴 < (𝐴 + (𝐵 / ;10)) |
13 | rpre 12831 | . . . 4 ⊢ (𝐵 ∈ ℝ+ → 𝐵 ∈ ℝ) | |
14 | 3, 13 | ax-mp 5 | . . 3 ⊢ 𝐵 ∈ ℝ |
15 | 1, 14 | dpval2 31395 | . 2 ⊢ (𝐴.𝐵) = (𝐴 + (𝐵 / ;10)) |
16 | 12, 15 | breqtrri 5116 | 1 ⊢ 𝐴 < (𝐴.𝐵) |
Colors of variables: wff setvar class |
Syntax hints: ∧ wa 396 ∈ wcel 2105 class class class wbr 5089 (class class class)co 7329 ℝcr 10963 0cc0 10964 1c1 10965 + caddc 10967 < clt 11102 / cdiv 11725 ℕ0cn0 12326 ;cdc 12530 ℝ+crp 12823 .cdp 31390 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1912 ax-6 1970 ax-7 2010 ax-8 2107 ax-9 2115 ax-10 2136 ax-11 2153 ax-12 2170 ax-ext 2707 ax-sep 5240 ax-nul 5247 ax-pow 5305 ax-pr 5369 ax-un 7642 ax-resscn 11021 ax-1cn 11022 ax-icn 11023 ax-addcl 11024 ax-addrcl 11025 ax-mulcl 11026 ax-mulrcl 11027 ax-mulcom 11028 ax-addass 11029 ax-mulass 11030 ax-distr 11031 ax-i2m1 11032 ax-1ne0 11033 ax-1rid 11034 ax-rnegex 11035 ax-rrecex 11036 ax-cnre 11037 ax-pre-lttri 11038 ax-pre-lttrn 11039 ax-pre-ltadd 11040 ax-pre-mulgt0 11041 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 845 df-3or 1087 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1781 df-nf 1785 df-sb 2067 df-mo 2538 df-eu 2567 df-clab 2714 df-cleq 2728 df-clel 2814 df-nfc 2886 df-ne 2941 df-nel 3047 df-ral 3062 df-rex 3071 df-rmo 3349 df-reu 3350 df-rab 3404 df-v 3443 df-sbc 3727 df-csb 3843 df-dif 3900 df-un 3902 df-in 3904 df-ss 3914 df-pss 3916 df-nul 4269 df-if 4473 df-pw 4548 df-sn 4573 df-pr 4575 df-op 4579 df-uni 4852 df-iun 4940 df-br 5090 df-opab 5152 df-mpt 5173 df-tr 5207 df-id 5512 df-eprel 5518 df-po 5526 df-so 5527 df-fr 5569 df-we 5571 df-xp 5620 df-rel 5621 df-cnv 5622 df-co 5623 df-dm 5624 df-rn 5625 df-res 5626 df-ima 5627 df-pred 6232 df-ord 6299 df-on 6300 df-lim 6301 df-suc 6302 df-iota 6425 df-fun 6475 df-fn 6476 df-f 6477 df-f1 6478 df-fo 6479 df-f1o 6480 df-fv 6481 df-riota 7286 df-ov 7332 df-oprab 7333 df-mpo 7334 df-om 7773 df-2nd 7892 df-frecs 8159 df-wrecs 8190 df-recs 8264 df-rdg 8303 df-er 8561 df-en 8797 df-dom 8798 df-sdom 8799 df-pnf 11104 df-mnf 11105 df-xr 11106 df-ltxr 11107 df-le 11108 df-sub 11300 df-neg 11301 df-div 11726 df-nn 12067 df-2 12129 df-3 12130 df-4 12131 df-5 12132 df-6 12133 df-7 12134 df-8 12135 df-9 12136 df-n0 12327 df-dec 12531 df-rp 12824 df-dp2 31374 df-dp 31391 |
This theorem is referenced by: hgt750lem 32872 |
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