| 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 2760 | . . . 4 ⊢ (𝑥 ∈ (0[,]1) ↦ if(𝑥 = 1, +∞, (𝑥 / (1 − 𝑥)))) = (𝑥 ∈ (0[,]1) ↦ if(𝑥 = 1, +∞, (𝑥 / (1 − 𝑥)))) | |
| 2 | eqid 2760 | . . . 4 ⊢ ((ordTop‘ ≤ ) ↾t (0[,]+∞)) = ((ordTop‘ ≤ ) ↾t (0[,]+∞)) | |
| 3 | 1, 2 | iccpnfhmeo 25273 | . . 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 491 | . 2 ⊢ (𝑥 ∈ (0[,]1) ↦ if(𝑥 = 1, +∞, (𝑥 / (1 − 𝑥)))) ∈ (IIHomeo((ordTop‘ ≤ ) ↾t (0[,]+∞))) |
| 5 | hmphi 24103 | . 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 |
| This proof depends on syntax axioms: = wceq 1569 ∈ wcel 2144 ifcif 4481 class class class wbr 5102 ↦ cmpt 5185 ‘cfv 6541 Isom wiso 6542 (class class class)co 7422 0cc0 11205 1c1 11206 +∞cpnf 11345 < clt 11348 ≤ cle 11349 − cmin 11546 / cdiv 11978 [,]cicc 13484 ↾t crest 17598 ordTopcordt 17678 Homeochmeo 24079 ≃ chmph 24080 IIcii 25203 |
| 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-rep 5231 ax-sep 5248 ax-nul 5259 ax-pow 5326 ax-pr 5390 ax-un 7753 ax-cnex 11261 ax-resscn 11262 ax-1cn 11263 ax-icn 11264 ax-addcl 11265 ax-addrcl 11266 ax-mulcl 11267 ax-mulrcl 11268 ax-mulcom 11269 ax-addass 11270 ax-mulass 11271 ax-distr 11272 ax-i2m1 11273 ax-1ne0 11274 ax-1rid 11275 ax-rnegex 11276 ax-rrecex 11277 ax-cnre 11278 ax-pre-lttri 11279 ax-pre-lttrn 11280 ax-pre-ltadd 11281 ax-pre-mulgt0 11282 ax-pre-sup 11283 |
| 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 3848 df-ss 3897 df-pss 4013 df-dif 4046 df-in 4090 df-un 4150 df-nul 4278 df-if 4482 df-pw 4558 df-sn 4585 df-pr 4587 df-tp 4589 df-op 4835 df-uni 4867 df-int 4907 df-iun 4952 df-iin 4953 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 6306 df-ord 6367 df-on 6368 df-lim 6369 df-suc 6370 df-iota 6496 df-fun 6543 df-fn 6544 df-f 6545 df-f1 6546 df-fo 6547 df-f1o 6548 df-fv 6549 df-isom 6550 df-riota 7379 df-ov 7425 df-oprab 7426 df-mpo 7427 df-om 7880 df-1st 8003 df-2nd 8004 df-frecs 8304 df-wrecs 8335 df-recs 8384 df-rdg 8423 df-1o 8481 df-2o 8482 df-er 8722 df-map 8854 df-en 8979 df-dom 8980 df-sdom 8981 df-fin 8982 df-fi 9408 df-sup 9439 df-inf 9440 df-pnf 11350 df-mnf 11351 df-xr 11352 df-ltxr 11353 df-le 11354 df-sub 11548 df-neg 11549 df-div 11979 df-nn 12341 df-2 12410 df-3 12411 df-4 12412 df-5 12413 df-6 12414 df-7 12415 df-8 12416 df-9 12417 df-n0 12612 df-z 12699 df-dec 12820 df-uz 12971 df-q 13081 df-rp 13126 df-xneg 13246 df-xadd 13247 df-xmul 13248 df-ioo 13485 df-ioc 13486 df-ico 13487 df-icc 13488 df-fz 13645 df-seq 14150 df-exp 14210 df-cj 15273 df-re 15274 df-im 15275 df-sqrt 15409 df-abs 15410 df-struct 17332 df-slot 17367 df-ndx 17379 df-base 17395 df-plusg 17448 df-mulr 17449 df-starv 17450 df-tset 17454 df-ple 17455 df-ds 17457 df-unif 17458 df-rest 17600 df-topn 17601 df-topgen 17621 df-ordt 17680 df-ps 18747 df-tsr 18748 df-psmet 21677 df-xmet 21678 df-met 21679 df-bl 21680 df-mopn 21681 df-cnfld 21686 df-top 23219 df-topon 23236 df-topsp 23258 df-bases 23271 df-cn 23552 df-hmeo 24081 df-hmph 24082 df-xms 24646 df-ms 24647 df-ii 25205 |
| This theorem is used by: (None) |
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