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| Mirrors > Home > MPE Home > Th. List > rpnnen1lem2 | Structured version Visualization version GIF version | ||
| Description: Lemma for rpnnen1 13111. (Contributed by Mario Carneiro, 12-May-2013.) |
| Ref | Expression |
|---|---|
| rpnnen1lem.1 | ⊢ 𝑇 = {𝑛 ∈ ℤ ∣ (𝑛 / 𝑘) < 𝑥} |
| rpnnen1lem.2 | ⊢ 𝐹 = (𝑥 ∈ ℝ ↦ (𝑘 ∈ ℕ ↦ (sup(𝑇, ℝ, < ) / 𝑘))) |
| Ref | Expression |
|---|---|
| rpnnen1lem2 | ⊢ ((𝑥 ∈ ℝ ∧ 𝑘 ∈ ℕ) → sup(𝑇, ℝ, < ) ∈ ℤ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | rpnnen1lem.1 | . . 3 ⊢ 𝑇 = {𝑛 ∈ ℤ ∣ (𝑛 / 𝑘) < 𝑥} | |
| 2 | 1 | ssrab3 4007 | . 2 ⊢ 𝑇 ⊆ ℤ |
| 3 | nnre 12342 | . . . . . . . 8 ⊢ (𝑘 ∈ ℕ → 𝑘 ∈ ℝ) | |
| 4 | remulcl 11285 | . . . . . . . . 9 ⊢ ((𝑘 ∈ ℝ ∧ 𝑥 ∈ ℝ) → (𝑘 · 𝑥) ∈ ℝ) | |
| 5 | 4 | ancoms 464 | . . . . . . . 8 ⊢ ((𝑥 ∈ ℝ ∧ 𝑘 ∈ ℝ) → (𝑘 · 𝑥) ∈ ℝ) |
| 6 | 3, 5 | sylan2 605 | . . . . . . 7 ⊢ ((𝑥 ∈ ℝ ∧ 𝑘 ∈ ℕ) → (𝑘 · 𝑥) ∈ ℝ) |
| 7 | btwnz 12802 | . . . . . . . 8 ⊢ ((𝑘 · 𝑥) ∈ ℝ → (∃𝑛 ∈ ℤ 𝑛 < (𝑘 · 𝑥) ∧ ∃𝑛 ∈ ℤ (𝑘 · 𝑥) < 𝑛)) | |
| 8 | 7 | simpld 500 | . . . . . . 7 ⊢ ((𝑘 · 𝑥) ∈ ℝ → ∃𝑛 ∈ ℤ 𝑛 < (𝑘 · 𝑥)) |
| 9 | 6, 8 | syl 18 | . . . . . 6 ⊢ ((𝑥 ∈ ℝ ∧ 𝑘 ∈ ℕ) → ∃𝑛 ∈ ℤ 𝑛 < (𝑘 · 𝑥)) |
| 10 | zre 12697 | . . . . . . . . 9 ⊢ (𝑛 ∈ ℤ → 𝑛 ∈ ℝ) | |
| 11 | 10 | adantl 487 | . . . . . . . 8 ⊢ (((𝑥 ∈ ℝ ∧ 𝑘 ∈ ℕ) ∧ 𝑛 ∈ ℤ) → 𝑛 ∈ ℝ) |
| 12 | simpll 779 | . . . . . . . 8 ⊢ (((𝑥 ∈ ℝ ∧ 𝑘 ∈ ℕ) ∧ 𝑛 ∈ ℤ) → 𝑥 ∈ ℝ) | |
| 13 | nngt0 12369 | . . . . . . . . . 10 ⊢ (𝑘 ∈ ℕ → 0 < 𝑘) | |
| 14 | 3, 13 | jca 521 | . . . . . . . . 9 ⊢ (𝑘 ∈ ℕ → (𝑘 ∈ ℝ ∧ 0 < 𝑘)) |
| 15 | 14 | ad2antlr 740 | . . . . . . . 8 ⊢ (((𝑥 ∈ ℝ ∧ 𝑘 ∈ ℕ) ∧ 𝑛 ∈ ℤ) → (𝑘 ∈ ℝ ∧ 0 < 𝑘)) |
| 16 | ltdivmul 12192 | . . . . . . . 8 ⊢ ((𝑛 ∈ ℝ ∧ 𝑥 ∈ ℝ ∧ (𝑘 ∈ ℝ ∧ 0 < 𝑘)) → ((𝑛 / 𝑘) < 𝑥 ↔ 𝑛 < (𝑘 · 𝑥))) | |
| 17 | 11, 12, 15, 16 | syl3anc 1398 | . . . . . . 7 ⊢ (((𝑥 ∈ ℝ ∧ 𝑘 ∈ ℕ) ∧ 𝑛 ∈ ℤ) → ((𝑛 / 𝑘) < 𝑥 ↔ 𝑛 < (𝑘 · 𝑥))) |
| 18 | 17 | rexbidva 3184 | . . . . . 6 ⊢ ((𝑥 ∈ ℝ ∧ 𝑘 ∈ ℕ) → (∃𝑛 ∈ ℤ (𝑛 / 𝑘) < 𝑥 ↔ ∃𝑛 ∈ ℤ 𝑛 < (𝑘 · 𝑥))) |
| 19 | 9, 18 | mpbird 260 | . . . . 5 ⊢ ((𝑥 ∈ ℝ ∧ 𝑘 ∈ ℕ) → ∃𝑛 ∈ ℤ (𝑛 / 𝑘) < 𝑥) |
| 20 | rabn0 4338 | . . . . 5 ⊢ ({𝑛 ∈ ℤ ∣ (𝑛 / 𝑘) < 𝑥} ≠ ∅ ↔ ∃𝑛 ∈ ℤ (𝑛 / 𝑘) < 𝑥) | |
| 21 | 19, 20 | sylibr 237 | . . . 4 ⊢ ((𝑥 ∈ ℝ ∧ 𝑘 ∈ ℕ) → {𝑛 ∈ ℤ ∣ (𝑛 / 𝑘) < 𝑥} ≠ ∅) |
| 22 | 1 | neeq1i 3019 | . . . 4 ⊢ (𝑇 ≠ ∅ ↔ {𝑛 ∈ ℤ ∣ (𝑛 / 𝑘) < 𝑥} ≠ ∅) |
| 23 | 21, 22 | sylibr 237 | . . 3 ⊢ ((𝑥 ∈ ℝ ∧ 𝑘 ∈ ℕ) → 𝑇 ≠ ∅) |
| 24 | 1 | reqabi 3434 | . . . . . 6 ⊢ (𝑛 ∈ 𝑇 ↔ (𝑛 ∈ ℤ ∧ (𝑛 / 𝑘) < 𝑥)) |
| 25 | 3 | ad2antlr 740 | . . . . . . . . . 10 ⊢ (((𝑥 ∈ ℝ ∧ 𝑘 ∈ ℕ) ∧ 𝑛 ∈ ℤ) → 𝑘 ∈ ℝ) |
| 26 | 25, 12, 4 | syl2anc 596 | . . . . . . . . 9 ⊢ (((𝑥 ∈ ℝ ∧ 𝑘 ∈ ℕ) ∧ 𝑛 ∈ ℤ) → (𝑘 · 𝑥) ∈ ℝ) |
| 27 | ltle 11398 | . . . . . . . . 9 ⊢ ((𝑛 ∈ ℝ ∧ (𝑘 · 𝑥) ∈ ℝ) → (𝑛 < (𝑘 · 𝑥) → 𝑛 ≤ (𝑘 · 𝑥))) | |
| 28 | 11, 26, 27 | syl2anc 596 | . . . . . . . 8 ⊢ (((𝑥 ∈ ℝ ∧ 𝑘 ∈ ℕ) ∧ 𝑛 ∈ ℤ) → (𝑛 < (𝑘 · 𝑥) → 𝑛 ≤ (𝑘 · 𝑥))) |
| 29 | 17, 28 | sylbid 243 | . . . . . . 7 ⊢ (((𝑥 ∈ ℝ ∧ 𝑘 ∈ ℕ) ∧ 𝑛 ∈ ℤ) → ((𝑛 / 𝑘) < 𝑥 → 𝑛 ≤ (𝑘 · 𝑥))) |
| 30 | 29 | impr 460 | . . . . . 6 ⊢ (((𝑥 ∈ ℝ ∧ 𝑘 ∈ ℕ) ∧ (𝑛 ∈ ℤ ∧ (𝑛 / 𝑘) < 𝑥)) → 𝑛 ≤ (𝑘 · 𝑥)) |
| 31 | 24, 30 | sylan2b 606 | . . . . 5 ⊢ (((𝑥 ∈ ℝ ∧ 𝑘 ∈ ℕ) ∧ 𝑛 ∈ 𝑇) → 𝑛 ≤ (𝑘 · 𝑥)) |
| 32 | 31 | ralrimiva 3154 | . . . 4 ⊢ ((𝑥 ∈ ℝ ∧ 𝑘 ∈ ℕ) → ∀𝑛 ∈ 𝑇 𝑛 ≤ (𝑘 · 𝑥)) |
| 33 | brralrspcev 5164 | . . . 4 ⊢ (((𝑘 · 𝑥) ∈ ℝ ∧ ∀𝑛 ∈ 𝑇 𝑛 ≤ (𝑘 · 𝑥)) → ∃𝑦 ∈ ℝ ∀𝑛 ∈ 𝑇 𝑛 ≤ 𝑦) | |
| 34 | 6, 32, 33 | syl2anc 596 | . . 3 ⊢ ((𝑥 ∈ ℝ ∧ 𝑘 ∈ ℕ) → ∃𝑦 ∈ ℝ ∀𝑛 ∈ 𝑇 𝑛 ≤ 𝑦) |
| 35 | suprzcl 12779 | . . 3 ⊢ ((𝑇 ⊆ ℤ ∧ 𝑇 ≠ ∅ ∧ ∃𝑦 ∈ ℝ ∀𝑛 ∈ 𝑇 𝑛 ≤ 𝑦) → sup(𝑇, ℝ, < ) ∈ 𝑇) | |
| 36 | 2, 23, 34, 35 | mp3an2i 1495 | . 2 ⊢ ((𝑥 ∈ ℝ ∧ 𝑘 ∈ ℕ) → sup(𝑇, ℝ, < ) ∈ 𝑇) |
| 37 | 2, 36 | sselid 3906 | 1 ⊢ ((𝑥 ∈ ℝ ∧ 𝑘 ∈ ℕ) → sup(𝑇, ℝ, < ) ∈ ℤ) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ↔ wb 209 ∧ wa 401 = wceq 1569 ∈ wcel 2144 ≠ wne 2955 ∀wral 3076 ∃wrex 3086 {crab 3412 ⊆ wss 3895 ∅c0 4278 class class class wbr 5102 ↦ cmpt 5185 (class class class)co 7420 supcsup 9432 ℝcr 11199 0cc0 11200 · cmul 11205 < clt 11343 ≤ cle 11344 / cdiv 11973 ℕcn 12335 ℤcz 12693 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-10 2177 ax-11 2193 ax-12 2212 ax-ext 2732 ax-sep 5248 ax-nul 5259 ax-pow 5326 ax-pr 5390 ax-un 7751 ax-resscn 11257 ax-1cn 11258 ax-icn 11259 ax-addcl 11260 ax-addrcl 11261 ax-mulcl 11262 ax-mulrcl 11263 ax-mulcom 11264 ax-addass 11265 ax-mulass 11266 ax-distr 11267 ax-i2m1 11268 ax-1ne0 11269 ax-1rid 11270 ax-rnegex 11271 ax-rrecex 11272 ax-cnre 11273 ax-pre-lttri 11274 ax-pre-lttrn 11275 ax-pre-ltadd 11276 ax-pre-mulgt0 11277 ax-pre-sup 11278 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2099 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-nel 3062 df-ral 3077 df-rex 3087 df-rmo 3365 df-reu 3366 df-rab 3413 df-v 3452 df-sbc 3739 df-csb 3847 df-ss 3896 df-pss 4014 df-dif 4047 df-in 4091 df-un 4151 df-nul 4279 df-if 4482 df-pw 4558 df-sn 4584 df-pr 4586 df-op 4590 df-uni 4867 df-iun 4952 df-br 5103 df-opab 5167 df-mpt 5186 df-tr 5212 df-id 5545 df-eprel 5550 df-po 5558 df-so 5559 df-fr 5603 df-we 5605 df-xp 5656 df-rel 5657 df-cnv 5658 df-co 5659 df-dm 5660 df-rn 5661 df-res 5662 df-ima 5663 df-pred 6304 df-ord 6365 df-on 6366 df-lim 6367 df-suc 6368 df-iota 6494 df-fun 6540 df-fn 6541 df-f 6542 df-f1 6543 df-fo 6544 df-f1o 6545 df-fv 6546 df-riota 7377 df-ov 7423 df-oprab 7424 df-mpo 7425 df-om 7878 df-2nd 8002 df-frecs 8299 df-wrecs 8330 df-recs 8379 df-rdg 8418 df-er 8717 df-en 8974 df-dom 8975 df-sdom 8976 df-sup 9434 df-pnf 11345 df-mnf 11346 df-xr 11347 df-ltxr 11348 df-le 11349 df-sub 11543 df-neg 11544 df-div 11974 df-nn 12336 df-n0 12607 df-z 12694 |
| This theorem is used by: rpnnen1lem3 13107 rpnnen1lem5 13109 |
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