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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 12217 | . . . 4 ⊢ ℕ ∈ V | |
| 2 | 1 | canth2 9103 | . . 3 ⊢ ℕ ≺ 𝒫 ℕ |
| 3 | domnsym 9076 | . . 3 ⊢ (𝒫 ℕ ≼ ℕ → ¬ ℕ ≺ 𝒫 ℕ) | |
| 4 | 2, 3 | mt2 202 | . 2 ⊢ ¬ 𝒫 ℕ ≼ ℕ |
| 5 | retop 24822 | . . . . . 6 ⊢ (topGen‘ran (,)) ∈ Top | |
| 6 | simpl 486 | . . . . . 6 ⊢ ((𝐴 ⊆ ℝ ∧ 𝐴 ≼ ℕ) → 𝐴 ⊆ ℝ) | |
| 7 | uniretop 24823 | . . . . . . 7 ⊢ ℝ = ∪ (topGen‘ran (,)) | |
| 8 | 7 | ntropn 23110 | . . . . . 6 ⊢ (((topGen‘ran (,)) ∈ Top ∧ 𝐴 ⊆ ℝ) → ((int‘(topGen‘ran (,)))‘𝐴) ∈ (topGen‘ran (,))) |
| 9 | 5, 6, 8 | sylancr 596 | . . . . 5 ⊢ ((𝐴 ⊆ ℝ ∧ 𝐴 ≼ ℕ) → ((int‘(topGen‘ran (,)))‘𝐴) ∈ (topGen‘ran (,))) |
| 10 | opnreen 24893 | . . . . . 6 ⊢ ((((int‘(topGen‘ran (,)))‘𝐴) ∈ (topGen‘ran (,)) ∧ ((int‘(topGen‘ran (,)))‘𝐴) ≠ ∅) → ((int‘(topGen‘ran (,)))‘𝐴) ≈ 𝒫 ℕ) | |
| 11 | 10 | ex 416 | . . . . 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 11165 | . . . . . . . 8 ⊢ ℝ ∈ V | |
| 14 | 13 | ssex 5278 | . . . . . . 7 ⊢ (𝐴 ⊆ ℝ → 𝐴 ∈ V) |
| 15 | 7 | ntrss2 23118 | . . . . . . . 8 ⊢ (((topGen‘ran (,)) ∈ Top ∧ 𝐴 ⊆ ℝ) → ((int‘(topGen‘ran (,)))‘𝐴) ⊆ 𝐴) |
| 16 | 5, 15 | mpan 700 | . . . . . . 7 ⊢ (𝐴 ⊆ ℝ → ((int‘(topGen‘ran (,)))‘𝐴) ⊆ 𝐴) |
| 17 | ssdomg 8982 | . . . . . . 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 8989 | . . . . . 6 ⊢ ((((int‘(topGen‘ran (,)))‘𝐴) ≼ 𝐴 ∧ 𝐴 ≼ ℕ) → ((int‘(topGen‘ran (,)))‘𝐴) ≼ ℕ) | |
| 20 | 18, 19 | sylan 589 | . . . . 5 ⊢ ((𝐴 ⊆ ℝ ∧ 𝐴 ≼ ℕ) → ((int‘(topGen‘ran (,)))‘𝐴) ≼ ℕ) |
| 21 | ensym 8985 | . . . . 5 ⊢ (((int‘(topGen‘ran (,)))‘𝐴) ≈ 𝒫 ℕ → 𝒫 ℕ ≈ ((int‘(topGen‘ran (,)))‘𝐴)) | |
| 22 | endomtr 8994 | . . . . . 6 ⊢ ((𝒫 ℕ ≈ ((int‘(topGen‘ran (,)))‘𝐴) ∧ ((int‘(topGen‘ran (,)))‘𝐴) ≼ ℕ) → 𝒫 ℕ ≼ ℕ) | |
| 23 | 22 | expcom 417 | . . . . 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 2976 | . 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 399 = wceq 1561 ∈ wcel 2143 ≠ wne 2958 Vcvv 3455 ⊆ wss 3905 ∅c0 4286 𝒫 cpw 4556 class class class wbr 5101 ran crn 5649 ‘cfv 6522 ≈ cen 8925 ≼ cdom 8926 ≺ csdm 8927 ℝcr 11073 ℕcn 12211 (,)cioo 13350 topGenctg 17467 Topctop 22954 intcnt 23078 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1816 ax-4 1830 ax-5 1931 ax-6 1988 ax-7 2029 ax-8 2145 ax-9 2153 ax-10 2176 ax-11 2192 ax-12 2213 ax-ext 2735 ax-rep 5228 ax-sep 5247 ax-nul 5257 ax-pow 5323 ax-pr 5391 ax-un 7719 ax-inf2 9597 ax-cnex 11130 ax-resscn 11131 ax-1cn 11132 ax-icn 11133 ax-addcl 11134 ax-addrcl 11135 ax-mulcl 11136 ax-mulrcl 11137 ax-mulcom 11138 ax-addass 11139 ax-mulass 11140 ax-distr 11141 ax-i2m1 11142 ax-1ne0 11143 ax-1rid 11144 ax-rnegex 11145 ax-rrecex 11146 ax-cnre 11147 ax-pre-lttri 11148 ax-pre-lttrn 11149 ax-pre-ltadd 11150 ax-pre-mulgt0 11151 ax-pre-sup 11152 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3or 1100 df-3an 1101 df-tru 1564 df-fal 1574 df-ex 1801 df-nf 1805 df-sb 2092 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2838 df-nfc 2912 df-ne 2959 df-nel 3063 df-ral 3078 df-rex 3088 df-rmo 3368 df-reu 3369 df-rab 3416 df-v 3457 df-sbc 3746 df-csb 3854 df-dif 3908 df-un 3910 df-in 3912 df-ss 3922 df-pss 3925 df-nul 4287 df-if 4482 df-pw 4558 df-sn 4584 df-pr 4586 df-op 4590 df-uni 4867 df-int 4907 df-iun 4952 df-br 5102 df-opab 5164 df-mpt 5183 df-tr 5209 df-id 5543 df-eprel 5548 df-po 5556 df-so 5557 df-fr 5601 df-se 5602 df-we 5603 df-xp 5654 df-rel 5655 df-cnv 5656 df-co 5657 df-dm 5658 df-rn 5659 df-res 5660 df-ima 5661 df-pred 6289 df-ord 6350 df-on 6351 df-lim 6352 df-suc 6353 df-iota 6478 df-fun 6524 df-fn 6525 df-f 6526 df-f1 6527 df-fo 6528 df-f1o 6529 df-fv 6530 df-isom 6531 df-riota 7354 df-ov 7400 df-oprab 7401 df-mpo 7402 df-om 7848 df-1st 7971 df-2nd 7972 df-frecs 8263 df-wrecs 8294 df-recs 8343 df-rdg 8382 df-1o 8438 df-2o 8439 df-oadd 8442 df-omul 8443 df-er 8679 df-map 8811 df-pm 8812 df-en 8929 df-dom 8930 df-sdom 8931 df-fin 8932 df-sup 9389 df-inf 9390 df-oi 9459 df-card 9898 df-acn 9901 df-pnf 11219 df-mnf 11220 df-xr 11221 df-ltxr 11222 df-le 11223 df-sub 11417 df-neg 11418 df-div 11846 df-nn 12212 df-2 12281 df-3 12282 df-n0 12483 df-z 12570 df-uz 12841 df-q 12951 df-rp 12995 df-xneg 13115 df-xadd 13116 df-xmul 13117 df-ioo 13354 df-ico 13356 df-icc 13357 df-fz 13514 df-fzo 13661 df-fl 13803 df-seq 14016 df-exp 14076 df-hash 14345 df-cj 15127 df-re 15128 df-im 15129 df-sqrt 15263 df-abs 15264 df-limsup 15499 df-clim 15516 df-rlim 15517 df-sum 15715 df-topgen 17473 df-psmet 21417 df-xmet 21418 df-met 21419 df-bl 21420 df-mopn 21421 df-top 22955 df-topon 22972 df-bases 23007 df-ntr 23081 |
| This theorem is referenced by: ioonct 46114 |
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