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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 12341 | . . . 4 ⊢ ℕ ∈ V | |
| 2 | 1 | canth2 9149 | . . 3 ⊢ ℕ ≺ 𝒫 ℕ |
| 3 | domnsym 9122 | . . 3 ⊢ (𝒫 ℕ ≼ ℕ → ¬ ℕ ≺ 𝒫 ℕ) | |
| 4 | 2, 3 | mt2 203 | . 2 ⊢ ¬ 𝒫 ℕ ≼ ℕ |
| 5 | retop 25080 | . . . . . 6 ⊢ (topGen‘ran (,)) ∈ Top | |
| 6 | simpl 488 | . . . . . 6 ⊢ ((𝐴 ⊆ ℝ ∧ 𝐴 ≼ ℕ) → 𝐴 ⊆ ℝ) | |
| 7 | uniretop 25081 | . . . . . . 7 ⊢ ℝ = ∪ (topGen‘ran (,)) | |
| 8 | 7 | ntropn 23367 | . . . . . 6 ⊢ (((topGen‘ran (,)) ∈ Top ∧ 𝐴 ⊆ ℝ) → ((int‘(topGen‘ran (,)))‘𝐴) ∈ (topGen‘ran (,))) |
| 9 | 5, 6, 8 | sylancr 599 | . . . . 5 ⊢ ((𝐴 ⊆ ℝ ∧ 𝐴 ≼ ℕ) → ((int‘(topGen‘ran (,)))‘𝐴) ∈ (topGen‘ran (,))) |
| 10 | opnreen 25151 | . . . . . 6 ⊢ ((((int‘(topGen‘ran (,)))‘𝐴) ∈ (topGen‘ran (,)) ∧ ((int‘(topGen‘ran (,)))‘𝐴) ≠ ∅) → ((int‘(topGen‘ran (,)))‘𝐴) ≈ 𝒫 ℕ) | |
| 11 | 10 | ex 418 | . . . . 5 ⊢ (((int‘(topGen‘ran (,)))‘𝐴) ∈ (topGen‘ran (,)) → (((int‘(topGen‘ran (,)))‘𝐴) ≠ ∅ → ((int‘(topGen‘ran (,)))‘𝐴) ≈ 𝒫 ℕ)) |
| 12 | 9, 11 | syl 18 | . . . 4 ⊢ ((𝐴 ⊆ ℝ ∧ 𝐴 ≼ ℕ) → (((int‘(topGen‘ran (,)))‘𝐴) ≠ ∅ → ((int‘(topGen‘ran (,)))‘𝐴) ≈ 𝒫 ℕ)) |
| 13 | reex 11291 | . . . . . . . 8 ⊢ ℝ ∈ V | |
| 14 | 13 | ssex 5282 | . . . . . . 7 ⊢ (𝐴 ⊆ ℝ → 𝐴 ∈ V) |
| 15 | 7 | ntrss2 23375 | . . . . . . . 8 ⊢ (((topGen‘ran (,)) ∈ Top ∧ 𝐴 ⊆ ℝ) → ((int‘(topGen‘ran (,)))‘𝐴) ⊆ 𝐴) |
| 16 | 5, 15 | mpan 703 | . . . . . . 7 ⊢ (𝐴 ⊆ ℝ → ((int‘(topGen‘ran (,)))‘𝐴) ⊆ 𝐴) |
| 17 | ssdomg 9027 | . . . . . . 7 ⊢ (𝐴 ∈ V → (((int‘(topGen‘ran (,)))‘𝐴) ⊆ 𝐴 → ((int‘(topGen‘ran (,)))‘𝐴) ≼ 𝐴)) | |
| 18 | 14, 16, 17 | sylc 66 | . . . . . 6 ⊢ (𝐴 ⊆ ℝ → ((int‘(topGen‘ran (,)))‘𝐴) ≼ 𝐴) |
| 19 | domtr 9034 | . . . . . 6 ⊢ ((((int‘(topGen‘ran (,)))‘𝐴) ≼ 𝐴 ∧ 𝐴 ≼ ℕ) → ((int‘(topGen‘ran (,)))‘𝐴) ≼ ℕ) | |
| 20 | 18, 19 | sylan 592 | . . . . 5 ⊢ ((𝐴 ⊆ ℝ ∧ 𝐴 ≼ ℕ) → ((int‘(topGen‘ran (,)))‘𝐴) ≼ ℕ) |
| 21 | ensym 9030 | . . . . 5 ⊢ (((int‘(topGen‘ran (,)))‘𝐴) ≈ 𝒫 ℕ → 𝒫 ℕ ≈ ((int‘(topGen‘ran (,)))‘𝐴)) | |
| 22 | endomtr 9039 | . . . . . 6 ⊢ ((𝒫 ℕ ≈ ((int‘(topGen‘ran (,)))‘𝐴) ∧ ((int‘(topGen‘ran (,)))‘𝐴) ≼ ℕ) → 𝒫 ℕ ≼ ℕ) | |
| 23 | 22 | expcom 419 | . . . . 5 ⊢ (((int‘(topGen‘ran (,)))‘𝐴) ≼ ℕ → (𝒫 ℕ ≈ ((int‘(topGen‘ran (,)))‘𝐴) → 𝒫 ℕ ≼ ℕ)) |
| 24 | 20, 21, 23 | syl2im 41 | . . . 4 ⊢ ((𝐴 ⊆ ℝ ∧ 𝐴 ≼ ℕ) → (((int‘(topGen‘ran (,)))‘𝐴) ≈ 𝒫 ℕ → 𝒫 ℕ ≼ ℕ)) |
| 25 | 12, 24 | syld 48 | . . 3 ⊢ ((𝐴 ⊆ ℝ ∧ 𝐴 ≼ ℕ) → (((int‘(topGen‘ran (,)))‘𝐴) ≠ ∅ → 𝒫 ℕ ≼ ℕ)) |
| 26 | 25 | necon1bd 2974 | . 2 ⊢ ((𝐴 ⊆ ℝ ∧ 𝐴 ≼ ℕ) → (¬ 𝒫 ℕ ≼ ℕ → ((int‘(topGen‘ran (,)))‘𝐴) = ∅)) |
| 27 | 4, 26 | mpi 21 | 1 ⊢ ((𝐴 ⊆ ℝ ∧ 𝐴 ≼ ℕ) → ((int‘(topGen‘ran (,)))‘𝐴) = ∅) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ¬ wn 3 → wi 4 ∧ wa 401 = wceq 1570 ∈ wcel 2145 ≠ wne 2956 Vcvv 3451 ⊆ wss 3899 ∅c0 4279 𝒫 cpw 4557 class class class wbr 5103 ran crn 5652 ‘cfv 6538 ≈ cen 8970 ≼ cdom 8971 ≺ csdm 8972 ℝcr 11199 ℕcn 12335 (,)cioo 13476 topGenctg 17608 Topctop 23211 intcnt 23335 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2213 ax-ext 2733 ax-rep 5232 ax-sep 5249 ax-nul 5260 ax-pow 5327 ax-pr 5391 ax-un 7751 ax-inf2 9642 ax-cnex 11256 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 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ne 2957 df-nel 3063 df-ral 3078 df-rex 3088 df-rmo 3366 df-reu 3367 df-rab 3414 df-v 3453 df-sbc 3740 df-csb 3848 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-pss 3919 df-nul 4280 df-if 4483 df-pw 4559 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-int 4908 df-iun 4953 df-br 5104 df-opab 5168 df-mpt 5187 df-tr 5213 df-id 5546 df-eprel 5551 df-po 5559 df-so 5560 df-fr 5604 df-se 5605 df-we 5606 df-xp 5657 df-rel 5658 df-cnv 5659 df-co 5660 df-dm 5661 df-rn 5662 df-res 5663 df-ima 5664 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-isom 6547 df-riota 7377 df-ov 7423 df-oprab 7424 df-mpo 7425 df-om 7878 df-1st 8001 df-2nd 8002 df-frecs 8299 df-wrecs 8330 df-recs 8379 df-rdg 8418 df-1o 8476 df-2o 8477 df-oadd 8480 df-omul 8481 df-er 8717 df-map 8849 df-pm 8850 df-en 8974 df-dom 8975 df-sdom 8976 df-fin 8977 df-sup 9434 df-inf 9435 df-oi 9504 df-card 10020 df-acn 10023 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-2 12405 df-3 12406 df-n0 12607 df-z 12694 df-uz 12966 df-q 13076 df-rp 13121 df-xneg 13241 df-xadd 13242 df-xmul 13243 df-ioo 13480 df-ico 13482 df-icc 13483 df-fz 13640 df-fzo 13789 df-fl 13932 df-seq 14145 df-exp 14205 df-hash 14475 df-cj 15266 df-re 15267 df-im 15268 df-sqrt 15402 df-abs 15403 df-limsup 15638 df-clim 15655 df-rlim 15656 df-sum 15854 df-topgen 17614 df-psmet 21670 df-xmet 21671 df-met 21672 df-bl 21673 df-mopn 21674 df-top 23212 df-topon 23229 df-bases 23264 df-ntr 23338 |
| This theorem is used by: ioonct 46548 |
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