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Mathbox for Thierry Arnoux |
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Mirrors > Home > MPE Home > Th. List > Mathboxes > xrge0hmph | Structured version Visualization version GIF version |
Description: The extended nonnegative reals are homeomorphic to the closed unit interval. (Contributed by Thierry Arnoux, 24-Mar-2017.) |
Ref | Expression |
---|---|
xrge0hmph | ⊢ II ≃ ((ordTop‘ ≤ ) ↾t (0[,]+∞)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | eqid 2826 | . . . 4 ⊢ (𝑥 ∈ (0[,]1) ↦ if(𝑥 = 1, +∞, (𝑥 / (1 − 𝑥)))) = (𝑥 ∈ (0[,]1) ↦ if(𝑥 = 1, +∞, (𝑥 / (1 − 𝑥)))) | |
2 | eqid 2826 | . . . 4 ⊢ ((ordTop‘ ≤ ) ↾t (0[,]+∞)) = ((ordTop‘ ≤ ) ↾t (0[,]+∞)) | |
3 | 1, 2 | iccpnfhmeo 23115 | . . 3 ⊢ ((𝑥 ∈ (0[,]1) ↦ if(𝑥 = 1, +∞, (𝑥 / (1 − 𝑥)))) Isom < , < ((0[,]1), (0[,]+∞)) ∧ (𝑥 ∈ (0[,]1) ↦ if(𝑥 = 1, +∞, (𝑥 / (1 − 𝑥)))) ∈ (IIHomeo((ordTop‘ ≤ ) ↾t (0[,]+∞)))) |
4 | 3 | simpri 481 | . 2 ⊢ (𝑥 ∈ (0[,]1) ↦ if(𝑥 = 1, +∞, (𝑥 / (1 − 𝑥)))) ∈ (IIHomeo((ordTop‘ ≤ ) ↾t (0[,]+∞))) |
5 | hmphi 21952 | . 2 ⊢ ((𝑥 ∈ (0[,]1) ↦ if(𝑥 = 1, +∞, (𝑥 / (1 − 𝑥)))) ∈ (IIHomeo((ordTop‘ ≤ ) ↾t (0[,]+∞))) → II ≃ ((ordTop‘ ≤ ) ↾t (0[,]+∞))) | |
6 | 4, 5 | ax-mp 5 | 1 ⊢ II ≃ ((ordTop‘ ≤ ) ↾t (0[,]+∞)) |
Colors of variables: wff setvar class |
Syntax hints: = wceq 1658 ∈ wcel 2166 ifcif 4307 class class class wbr 4874 ↦ cmpt 4953 ‘cfv 6124 Isom wiso 6125 (class class class)co 6906 0cc0 10253 1c1 10254 +∞cpnf 10389 < clt 10392 ≤ cle 10393 − cmin 10586 / cdiv 11010 [,]cicc 12467 ↾t crest 16435 ordTopcordt 16513 Homeochmeo 21928 ≃ chmph 21929 IIcii 23049 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1896 ax-4 1910 ax-5 2011 ax-6 2077 ax-7 2114 ax-8 2168 ax-9 2175 ax-10 2194 ax-11 2209 ax-12 2222 ax-13 2391 ax-ext 2804 ax-rep 4995 ax-sep 5006 ax-nul 5014 ax-pow 5066 ax-pr 5128 ax-un 7210 ax-cnex 10309 ax-resscn 10310 ax-1cn 10311 ax-icn 10312 ax-addcl 10313 ax-addrcl 10314 ax-mulcl 10315 ax-mulrcl 10316 ax-mulcom 10317 ax-addass 10318 ax-mulass 10319 ax-distr 10320 ax-i2m1 10321 ax-1ne0 10322 ax-1rid 10323 ax-rnegex 10324 ax-rrecex 10325 ax-cnre 10326 ax-pre-lttri 10327 ax-pre-lttrn 10328 ax-pre-ltadd 10329 ax-pre-mulgt0 10330 ax-pre-sup 10331 |
This theorem depends on definitions: df-bi 199 df-an 387 df-or 881 df-3or 1114 df-3an 1115 df-tru 1662 df-ex 1881 df-nf 1885 df-sb 2070 df-mo 2606 df-eu 2641 df-clab 2813 df-cleq 2819 df-clel 2822 df-nfc 2959 df-ne 3001 df-nel 3104 df-ral 3123 df-rex 3124 df-reu 3125 df-rmo 3126 df-rab 3127 df-v 3417 df-sbc 3664 df-csb 3759 df-dif 3802 df-un 3804 df-in 3806 df-ss 3813 df-pss 3815 df-nul 4146 df-if 4308 df-pw 4381 df-sn 4399 df-pr 4401 df-tp 4403 df-op 4405 df-uni 4660 df-int 4699 df-iun 4743 df-iin 4744 df-br 4875 df-opab 4937 df-mpt 4954 df-tr 4977 df-id 5251 df-eprel 5256 df-po 5264 df-so 5265 df-fr 5302 df-we 5304 df-xp 5349 df-rel 5350 df-cnv 5351 df-co 5352 df-dm 5353 df-rn 5354 df-res 5355 df-ima 5356 df-pred 5921 df-ord 5967 df-on 5968 df-lim 5969 df-suc 5970 df-iota 6087 df-fun 6126 df-fn 6127 df-f 6128 df-f1 6129 df-fo 6130 df-f1o 6131 df-fv 6132 df-isom 6133 df-riota 6867 df-ov 6909 df-oprab 6910 df-mpt2 6911 df-om 7328 df-1st 7429 df-2nd 7430 df-wrecs 7673 df-recs 7735 df-rdg 7773 df-1o 7827 df-oadd 7831 df-er 8010 df-map 8125 df-en 8224 df-dom 8225 df-sdom 8226 df-fin 8227 df-fi 8587 df-sup 8618 df-inf 8619 df-pnf 10394 df-mnf 10395 df-xr 10396 df-ltxr 10397 df-le 10398 df-sub 10588 df-neg 10589 df-div 11011 df-nn 11352 df-2 11415 df-3 11416 df-4 11417 df-5 11418 df-6 11419 df-7 11420 df-8 11421 df-9 11422 df-n0 11620 df-z 11706 df-dec 11823 df-uz 11970 df-q 12073 df-rp 12114 df-xneg 12233 df-xadd 12234 df-xmul 12235 df-ioo 12468 df-ioc 12469 df-ico 12470 df-icc 12471 df-fz 12621 df-seq 13097 df-exp 13156 df-cj 14217 df-re 14218 df-im 14219 df-sqrt 14353 df-abs 14354 df-struct 16225 df-ndx 16226 df-slot 16227 df-base 16229 df-plusg 16319 df-mulr 16320 df-starv 16321 df-tset 16325 df-ple 16326 df-ds 16328 df-unif 16329 df-rest 16437 df-topn 16438 df-topgen 16458 df-ordt 16515 df-ps 17554 df-tsr 17555 df-psmet 20099 df-xmet 20100 df-met 20101 df-bl 20102 df-mopn 20103 df-cnfld 20108 df-top 21070 df-topon 21087 df-topsp 21109 df-bases 21122 df-cn 21403 df-hmeo 21930 df-hmph 21931 df-xms 22496 df-ms 22497 df-ii 23051 |
This theorem is referenced by: (None) |
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