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| Mirrors > Home > MPE Home > Th. List > rectbntr0 | Structured version Visualization version GIF version | ||
| Description: A countable subset of the reals has empty interior. (Contributed by Mario Carneiro, 26-Jul-2014.) |
| Ref | Expression |
|---|---|
| rectbntr0 | ⊢ ((𝐴 ⊆ ℝ ∧ 𝐴 ≼ ℕ) → ((int‘(topGen‘ran (,)))‘𝐴) = ∅) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | nnex 12134 | . . . 4 ⊢ ℕ ∈ V | |
| 2 | 1 | canth2 9047 | . . 3 ⊢ ℕ ≺ 𝒫 ℕ |
| 3 | domnsym 9020 | . . 3 ⊢ (𝒫 ℕ ≼ ℕ → ¬ ℕ ≺ 𝒫 ℕ) | |
| 4 | 2, 3 | mt2 200 | . 2 ⊢ ¬ 𝒫 ℕ ≼ ℕ |
| 5 | retop 24647 | . . . . . 6 ⊢ (topGen‘ran (,)) ∈ Top | |
| 6 | simpl 482 | . . . . . 6 ⊢ ((𝐴 ⊆ ℝ ∧ 𝐴 ≼ ℕ) → 𝐴 ⊆ ℝ) | |
| 7 | uniretop 24648 | . . . . . . 7 ⊢ ℝ = ∪ (topGen‘ran (,)) | |
| 8 | 7 | ntropn 22934 | . . . . . 6 ⊢ (((topGen‘ran (,)) ∈ Top ∧ 𝐴 ⊆ ℝ) → ((int‘(topGen‘ran (,)))‘𝐴) ∈ (topGen‘ran (,))) |
| 9 | 5, 6, 8 | sylancr 587 | . . . . 5 ⊢ ((𝐴 ⊆ ℝ ∧ 𝐴 ≼ ℕ) → ((int‘(topGen‘ran (,)))‘𝐴) ∈ (topGen‘ran (,))) |
| 10 | opnreen 24718 | . . . . . 6 ⊢ ((((int‘(topGen‘ran (,)))‘𝐴) ∈ (topGen‘ran (,)) ∧ ((int‘(topGen‘ran (,)))‘𝐴) ≠ ∅) → ((int‘(topGen‘ran (,)))‘𝐴) ≈ 𝒫 ℕ) | |
| 11 | 10 | ex 412 | . . . . 5 ⊢ (((int‘(topGen‘ran (,)))‘𝐴) ∈ (topGen‘ran (,)) → (((int‘(topGen‘ran (,)))‘𝐴) ≠ ∅ → ((int‘(topGen‘ran (,)))‘𝐴) ≈ 𝒫 ℕ)) |
| 12 | 9, 11 | syl 17 | . . . 4 ⊢ ((𝐴 ⊆ ℝ ∧ 𝐴 ≼ ℕ) → (((int‘(topGen‘ran (,)))‘𝐴) ≠ ∅ → ((int‘(topGen‘ran (,)))‘𝐴) ≈ 𝒫 ℕ)) |
| 13 | reex 11100 | . . . . . . . 8 ⊢ ℝ ∈ V | |
| 14 | 13 | ssex 5260 | . . . . . . 7 ⊢ (𝐴 ⊆ ℝ → 𝐴 ∈ V) |
| 15 | 7 | ntrss2 22942 | . . . . . . . 8 ⊢ (((topGen‘ran (,)) ∈ Top ∧ 𝐴 ⊆ ℝ) → ((int‘(topGen‘ran (,)))‘𝐴) ⊆ 𝐴) |
| 16 | 5, 15 | mpan 690 | . . . . . . 7 ⊢ (𝐴 ⊆ ℝ → ((int‘(topGen‘ran (,)))‘𝐴) ⊆ 𝐴) |
| 17 | ssdomg 8925 | . . . . . . 7 ⊢ (𝐴 ∈ V → (((int‘(topGen‘ran (,)))‘𝐴) ⊆ 𝐴 → ((int‘(topGen‘ran (,)))‘𝐴) ≼ 𝐴)) | |
| 18 | 14, 16, 17 | sylc 65 | . . . . . 6 ⊢ (𝐴 ⊆ ℝ → ((int‘(topGen‘ran (,)))‘𝐴) ≼ 𝐴) |
| 19 | domtr 8932 | . . . . . 6 ⊢ ((((int‘(topGen‘ran (,)))‘𝐴) ≼ 𝐴 ∧ 𝐴 ≼ ℕ) → ((int‘(topGen‘ran (,)))‘𝐴) ≼ ℕ) | |
| 20 | 18, 19 | sylan 580 | . . . . 5 ⊢ ((𝐴 ⊆ ℝ ∧ 𝐴 ≼ ℕ) → ((int‘(topGen‘ran (,)))‘𝐴) ≼ ℕ) |
| 21 | ensym 8928 | . . . . 5 ⊢ (((int‘(topGen‘ran (,)))‘𝐴) ≈ 𝒫 ℕ → 𝒫 ℕ ≈ ((int‘(topGen‘ran (,)))‘𝐴)) | |
| 22 | endomtr 8937 | . . . . . 6 ⊢ ((𝒫 ℕ ≈ ((int‘(topGen‘ran (,)))‘𝐴) ∧ ((int‘(topGen‘ran (,)))‘𝐴) ≼ ℕ) → 𝒫 ℕ ≼ ℕ) | |
| 23 | 22 | expcom 413 | . . . . 5 ⊢ (((int‘(topGen‘ran (,)))‘𝐴) ≼ ℕ → (𝒫 ℕ ≈ ((int‘(topGen‘ran (,)))‘𝐴) → 𝒫 ℕ ≼ ℕ)) |
| 24 | 20, 21, 23 | syl2im 40 | . . . 4 ⊢ ((𝐴 ⊆ ℝ ∧ 𝐴 ≼ ℕ) → (((int‘(topGen‘ran (,)))‘𝐴) ≈ 𝒫 ℕ → 𝒫 ℕ ≼ ℕ)) |
| 25 | 12, 24 | syld 47 | . . 3 ⊢ ((𝐴 ⊆ ℝ ∧ 𝐴 ≼ ℕ) → (((int‘(topGen‘ran (,)))‘𝐴) ≠ ∅ → 𝒫 ℕ ≼ ℕ)) |
| 26 | 25 | necon1bd 2943 | . 2 ⊢ ((𝐴 ⊆ ℝ ∧ 𝐴 ≼ ℕ) → (¬ 𝒫 ℕ ≼ ℕ → ((int‘(topGen‘ran (,)))‘𝐴) = ∅)) |
| 27 | 4, 26 | mpi 20 | 1 ⊢ ((𝐴 ⊆ ℝ ∧ 𝐴 ≼ ℕ) → ((int‘(topGen‘ran (,)))‘𝐴) = ∅) |
| Colors of variables: wff setvar class |
| Syntax hints: ¬ wn 3 → wi 4 ∧ wa 395 = wceq 1540 ∈ wcel 2109 ≠ wne 2925 Vcvv 3436 ⊆ wss 3903 ∅c0 4284 𝒫 cpw 4551 class class class wbr 5092 ran crn 5620 ‘cfv 6482 ≈ cen 8869 ≼ cdom 8870 ≺ csdm 8871 ℝcr 11008 ℕcn 12128 (,)cioo 13248 topGenctg 17341 Topctop 22778 intcnt 22902 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-10 2142 ax-11 2158 ax-12 2178 ax-ext 2701 ax-rep 5218 ax-sep 5235 ax-nul 5245 ax-pow 5304 ax-pr 5371 ax-un 7671 ax-inf2 9537 ax-cnex 11065 ax-resscn 11066 ax-1cn 11067 ax-icn 11068 ax-addcl 11069 ax-addrcl 11070 ax-mulcl 11071 ax-mulrcl 11072 ax-mulcom 11073 ax-addass 11074 ax-mulass 11075 ax-distr 11076 ax-i2m1 11077 ax-1ne0 11078 ax-1rid 11079 ax-rnegex 11080 ax-rrecex 11081 ax-cnre 11082 ax-pre-lttri 11083 ax-pre-lttrn 11084 ax-pre-ltadd 11085 ax-pre-mulgt0 11086 ax-pre-sup 11087 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2533 df-eu 2562 df-clab 2708 df-cleq 2721 df-clel 2803 df-nfc 2878 df-ne 2926 df-nel 3030 df-ral 3045 df-rex 3054 df-rmo 3343 df-reu 3344 df-rab 3395 df-v 3438 df-sbc 3743 df-csb 3852 df-dif 3906 df-un 3908 df-in 3910 df-ss 3920 df-pss 3923 df-nul 4285 df-if 4477 df-pw 4553 df-sn 4578 df-pr 4580 df-op 4584 df-uni 4859 df-int 4897 df-iun 4943 df-br 5093 df-opab 5155 df-mpt 5174 df-tr 5200 df-id 5514 df-eprel 5519 df-po 5527 df-so 5528 df-fr 5572 df-se 5573 df-we 5574 df-xp 5625 df-rel 5626 df-cnv 5627 df-co 5628 df-dm 5629 df-rn 5630 df-res 5631 df-ima 5632 df-pred 6249 df-ord 6310 df-on 6311 df-lim 6312 df-suc 6313 df-iota 6438 df-fun 6484 df-fn 6485 df-f 6486 df-f1 6487 df-fo 6488 df-f1o 6489 df-fv 6490 df-isom 6491 df-riota 7306 df-ov 7352 df-oprab 7353 df-mpo 7354 df-om 7800 df-1st 7924 df-2nd 7925 df-frecs 8214 df-wrecs 8245 df-recs 8294 df-rdg 8332 df-1o 8388 df-2o 8389 df-oadd 8392 df-omul 8393 df-er 8625 df-map 8755 df-pm 8756 df-en 8873 df-dom 8874 df-sdom 8875 df-fin 8876 df-sup 9332 df-inf 9333 df-oi 9402 df-card 9835 df-acn 9838 df-pnf 11151 df-mnf 11152 df-xr 11153 df-ltxr 11154 df-le 11155 df-sub 11349 df-neg 11350 df-div 11778 df-nn 12129 df-2 12191 df-3 12192 df-n0 12385 df-z 12472 df-uz 12736 df-q 12850 df-rp 12894 df-xneg 13014 df-xadd 13015 df-xmul 13016 df-ioo 13252 df-ico 13254 df-icc 13255 df-fz 13411 df-fzo 13558 df-fl 13696 df-seq 13909 df-exp 13969 df-hash 14238 df-cj 15006 df-re 15007 df-im 15008 df-sqrt 15142 df-abs 15143 df-limsup 15378 df-clim 15395 df-rlim 15396 df-sum 15594 df-topgen 17347 df-psmet 21253 df-xmet 21254 df-met 21255 df-bl 21256 df-mopn 21257 df-top 22779 df-topon 22796 df-bases 22831 df-ntr 22905 |
| This theorem is referenced by: ioonct 45518 |
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