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Mirrors > Home > MPE Home > Th. List > flltdivnn0lt | Structured version Visualization version GIF version |
Description: The floor function of a division of a nonnegative integer by a positive integer is less than the division of a greater dividend by the same positive integer. (Contributed by Alexander van der Vekens, 14-Apr-2018.) |
Ref | Expression |
---|---|
flltdivnn0lt | ⊢ ((𝐾 ∈ ℕ0 ∧ 𝑁 ∈ ℕ0 ∧ 𝐿 ∈ ℕ) → (𝐾 < 𝑁 → (⌊‘(𝐾 / 𝐿)) < (𝑁 / 𝐿))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | nn0nndivcl 12314 | . . . . . . 7 ⊢ ((𝐾 ∈ ℕ0 ∧ 𝐿 ∈ ℕ) → (𝐾 / 𝐿) ∈ ℝ) | |
2 | reflcl 13526 | . . . . . . 7 ⊢ ((𝐾 / 𝐿) ∈ ℝ → (⌊‘(𝐾 / 𝐿)) ∈ ℝ) | |
3 | 1, 2 | syl 17 | . . . . . 6 ⊢ ((𝐾 ∈ ℕ0 ∧ 𝐿 ∈ ℕ) → (⌊‘(𝐾 / 𝐿)) ∈ ℝ) |
4 | 3 | 3adant2 1130 | . . . . 5 ⊢ ((𝐾 ∈ ℕ0 ∧ 𝑁 ∈ ℕ0 ∧ 𝐿 ∈ ℕ) → (⌊‘(𝐾 / 𝐿)) ∈ ℝ) |
5 | 1 | 3adant2 1130 | . . . . 5 ⊢ ((𝐾 ∈ ℕ0 ∧ 𝑁 ∈ ℕ0 ∧ 𝐿 ∈ ℕ) → (𝐾 / 𝐿) ∈ ℝ) |
6 | nn0nndivcl 12314 | . . . . . 6 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝐿 ∈ ℕ) → (𝑁 / 𝐿) ∈ ℝ) | |
7 | 6 | 3adant1 1129 | . . . . 5 ⊢ ((𝐾 ∈ ℕ0 ∧ 𝑁 ∈ ℕ0 ∧ 𝐿 ∈ ℕ) → (𝑁 / 𝐿) ∈ ℝ) |
8 | 4, 5, 7 | 3jca 1127 | . . . 4 ⊢ ((𝐾 ∈ ℕ0 ∧ 𝑁 ∈ ℕ0 ∧ 𝐿 ∈ ℕ) → ((⌊‘(𝐾 / 𝐿)) ∈ ℝ ∧ (𝐾 / 𝐿) ∈ ℝ ∧ (𝑁 / 𝐿) ∈ ℝ)) |
9 | 8 | adantr 481 | . . 3 ⊢ (((𝐾 ∈ ℕ0 ∧ 𝑁 ∈ ℕ0 ∧ 𝐿 ∈ ℕ) ∧ 𝐾 < 𝑁) → ((⌊‘(𝐾 / 𝐿)) ∈ ℝ ∧ (𝐾 / 𝐿) ∈ ℝ ∧ (𝑁 / 𝐿) ∈ ℝ)) |
10 | fldivnn0le 13562 | . . . . . 6 ⊢ ((𝐾 ∈ ℕ0 ∧ 𝐿 ∈ ℕ) → (⌊‘(𝐾 / 𝐿)) ≤ (𝐾 / 𝐿)) | |
11 | 10 | 3adant2 1130 | . . . . 5 ⊢ ((𝐾 ∈ ℕ0 ∧ 𝑁 ∈ ℕ0 ∧ 𝐿 ∈ ℕ) → (⌊‘(𝐾 / 𝐿)) ≤ (𝐾 / 𝐿)) |
12 | 11 | adantr 481 | . . . 4 ⊢ (((𝐾 ∈ ℕ0 ∧ 𝑁 ∈ ℕ0 ∧ 𝐿 ∈ ℕ) ∧ 𝐾 < 𝑁) → (⌊‘(𝐾 / 𝐿)) ≤ (𝐾 / 𝐿)) |
13 | simpr 485 | . . . . 5 ⊢ (((𝐾 ∈ ℕ0 ∧ 𝑁 ∈ ℕ0 ∧ 𝐿 ∈ ℕ) ∧ 𝐾 < 𝑁) → 𝐾 < 𝑁) | |
14 | nn0re 12252 | . . . . . . . 8 ⊢ (𝐾 ∈ ℕ0 → 𝐾 ∈ ℝ) | |
15 | nn0re 12252 | . . . . . . . 8 ⊢ (𝑁 ∈ ℕ0 → 𝑁 ∈ ℝ) | |
16 | nnre 11990 | . . . . . . . . 9 ⊢ (𝐿 ∈ ℕ → 𝐿 ∈ ℝ) | |
17 | nngt0 12014 | . . . . . . . . 9 ⊢ (𝐿 ∈ ℕ → 0 < 𝐿) | |
18 | 16, 17 | jca 512 | . . . . . . . 8 ⊢ (𝐿 ∈ ℕ → (𝐿 ∈ ℝ ∧ 0 < 𝐿)) |
19 | 14, 15, 18 | 3anim123i 1150 | . . . . . . 7 ⊢ ((𝐾 ∈ ℕ0 ∧ 𝑁 ∈ ℕ0 ∧ 𝐿 ∈ ℕ) → (𝐾 ∈ ℝ ∧ 𝑁 ∈ ℝ ∧ (𝐿 ∈ ℝ ∧ 0 < 𝐿))) |
20 | 19 | adantr 481 | . . . . . 6 ⊢ (((𝐾 ∈ ℕ0 ∧ 𝑁 ∈ ℕ0 ∧ 𝐿 ∈ ℕ) ∧ 𝐾 < 𝑁) → (𝐾 ∈ ℝ ∧ 𝑁 ∈ ℝ ∧ (𝐿 ∈ ℝ ∧ 0 < 𝐿))) |
21 | ltdiv1 11849 | . . . . . 6 ⊢ ((𝐾 ∈ ℝ ∧ 𝑁 ∈ ℝ ∧ (𝐿 ∈ ℝ ∧ 0 < 𝐿)) → (𝐾 < 𝑁 ↔ (𝐾 / 𝐿) < (𝑁 / 𝐿))) | |
22 | 20, 21 | syl 17 | . . . . 5 ⊢ (((𝐾 ∈ ℕ0 ∧ 𝑁 ∈ ℕ0 ∧ 𝐿 ∈ ℕ) ∧ 𝐾 < 𝑁) → (𝐾 < 𝑁 ↔ (𝐾 / 𝐿) < (𝑁 / 𝐿))) |
23 | 13, 22 | mpbid 231 | . . . 4 ⊢ (((𝐾 ∈ ℕ0 ∧ 𝑁 ∈ ℕ0 ∧ 𝐿 ∈ ℕ) ∧ 𝐾 < 𝑁) → (𝐾 / 𝐿) < (𝑁 / 𝐿)) |
24 | 12, 23 | jca 512 | . . 3 ⊢ (((𝐾 ∈ ℕ0 ∧ 𝑁 ∈ ℕ0 ∧ 𝐿 ∈ ℕ) ∧ 𝐾 < 𝑁) → ((⌊‘(𝐾 / 𝐿)) ≤ (𝐾 / 𝐿) ∧ (𝐾 / 𝐿) < (𝑁 / 𝐿))) |
25 | lelttr 11075 | . . 3 ⊢ (((⌊‘(𝐾 / 𝐿)) ∈ ℝ ∧ (𝐾 / 𝐿) ∈ ℝ ∧ (𝑁 / 𝐿) ∈ ℝ) → (((⌊‘(𝐾 / 𝐿)) ≤ (𝐾 / 𝐿) ∧ (𝐾 / 𝐿) < (𝑁 / 𝐿)) → (⌊‘(𝐾 / 𝐿)) < (𝑁 / 𝐿))) | |
26 | 9, 24, 25 | sylc 65 | . 2 ⊢ (((𝐾 ∈ ℕ0 ∧ 𝑁 ∈ ℕ0 ∧ 𝐿 ∈ ℕ) ∧ 𝐾 < 𝑁) → (⌊‘(𝐾 / 𝐿)) < (𝑁 / 𝐿)) |
27 | 26 | ex 413 | 1 ⊢ ((𝐾 ∈ ℕ0 ∧ 𝑁 ∈ ℕ0 ∧ 𝐿 ∈ ℕ) → (𝐾 < 𝑁 → (⌊‘(𝐾 / 𝐿)) < (𝑁 / 𝐿))) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 205 ∧ wa 396 ∧ w3a 1086 ∈ wcel 2106 class class class wbr 5073 ‘cfv 6426 (class class class)co 7267 ℝcr 10880 0cc0 10881 < clt 11019 ≤ cle 11020 / cdiv 11642 ℕcn 11983 ℕ0cn0 12243 ⌊cfl 13520 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2709 ax-sep 5221 ax-nul 5228 ax-pow 5286 ax-pr 5350 ax-un 7578 ax-cnex 10937 ax-resscn 10938 ax-1cn 10939 ax-icn 10940 ax-addcl 10941 ax-addrcl 10942 ax-mulcl 10943 ax-mulrcl 10944 ax-mulcom 10945 ax-addass 10946 ax-mulass 10947 ax-distr 10948 ax-i2m1 10949 ax-1ne0 10950 ax-1rid 10951 ax-rnegex 10952 ax-rrecex 10953 ax-cnre 10954 ax-pre-lttri 10955 ax-pre-lttrn 10956 ax-pre-ltadd 10957 ax-pre-mulgt0 10958 ax-pre-sup 10959 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 845 df-3or 1087 df-3an 1088 df-tru 1542 df-fal 1552 df-ex 1783 df-nf 1787 df-sb 2068 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2816 df-nfc 2889 df-ne 2944 df-nel 3050 df-ral 3069 df-rex 3070 df-reu 3071 df-rmo 3072 df-rab 3073 df-v 3431 df-sbc 3716 df-csb 3832 df-dif 3889 df-un 3891 df-in 3893 df-ss 3903 df-pss 3905 df-nul 4257 df-if 4460 df-pw 4535 df-sn 4562 df-pr 4564 df-op 4568 df-uni 4840 df-iun 4926 df-br 5074 df-opab 5136 df-mpt 5157 df-tr 5191 df-id 5484 df-eprel 5490 df-po 5498 df-so 5499 df-fr 5539 df-we 5541 df-xp 5590 df-rel 5591 df-cnv 5592 df-co 5593 df-dm 5594 df-rn 5595 df-res 5596 df-ima 5597 df-pred 6195 df-ord 6262 df-on 6263 df-lim 6264 df-suc 6265 df-iota 6384 df-fun 6428 df-fn 6429 df-f 6430 df-f1 6431 df-fo 6432 df-f1o 6433 df-fv 6434 df-riota 7224 df-ov 7270 df-oprab 7271 df-mpo 7272 df-om 7703 df-2nd 7821 df-frecs 8084 df-wrecs 8115 df-recs 8189 df-rdg 8228 df-er 8485 df-en 8721 df-dom 8722 df-sdom 8723 df-sup 9188 df-inf 9189 df-pnf 11021 df-mnf 11022 df-xr 11023 df-ltxr 11024 df-le 11025 df-sub 11217 df-neg 11218 df-div 11643 df-nn 11984 df-n0 12244 df-z 12330 df-uz 12593 df-rp 12741 df-fl 13522 |
This theorem is referenced by: (None) |
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