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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 2734 | . . . 4 ⊢ (𝑥 ∈ (0[,]1) ↦ if(𝑥 = 1, +∞, (𝑥 / (1 − 𝑥)))) = (𝑥 ∈ (0[,]1) ↦ if(𝑥 = 1, +∞, (𝑥 / (1 − 𝑥)))) | |
| 2 | eqid 2734 | . . . 4 ⊢ ((ordTop‘ ≤ ) ↾t (0[,]+∞)) = ((ordTop‘ ≤ ) ↾t (0[,]+∞)) | |
| 3 | 1, 2 | iccpnfhmeo 24911 | . . 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 485 | . 2 ⊢ (𝑥 ∈ (0[,]1) ↦ if(𝑥 = 1, +∞, (𝑥 / (1 − 𝑥)))) ∈ (IIHomeo((ordTop‘ ≤ ) ↾t (0[,]+∞))) |
| 5 | hmphi 23730 | . 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 1539 ∈ wcel 2107 ifcif 4505 class class class wbr 5123 ↦ cmpt 5205 ‘cfv 6540 Isom wiso 6541 (class class class)co 7412 0cc0 11136 1c1 11137 +∞cpnf 11273 < clt 11276 ≤ cle 11277 − cmin 11473 / cdiv 11901 [,]cicc 13371 ↾t crest 17435 ordTopcordt 17514 Homeochmeo 23706 ≃ chmph 23707 IIcii 24836 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1794 ax-4 1808 ax-5 1909 ax-6 1966 ax-7 2006 ax-8 2109 ax-9 2117 ax-10 2140 ax-11 2156 ax-12 2176 ax-ext 2706 ax-rep 5259 ax-sep 5276 ax-nul 5286 ax-pow 5345 ax-pr 5412 ax-un 7736 ax-cnex 11192 ax-resscn 11193 ax-1cn 11194 ax-icn 11195 ax-addcl 11196 ax-addrcl 11197 ax-mulcl 11198 ax-mulrcl 11199 ax-mulcom 11200 ax-addass 11201 ax-mulass 11202 ax-distr 11203 ax-i2m1 11204 ax-1ne0 11205 ax-1rid 11206 ax-rnegex 11207 ax-rrecex 11208 ax-cnre 11209 ax-pre-lttri 11210 ax-pre-lttrn 11211 ax-pre-ltadd 11212 ax-pre-mulgt0 11213 ax-pre-sup 11214 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1542 df-fal 1552 df-ex 1779 df-nf 1783 df-sb 2064 df-mo 2538 df-eu 2567 df-clab 2713 df-cleq 2726 df-clel 2808 df-nfc 2884 df-ne 2932 df-nel 3036 df-ral 3051 df-rex 3060 df-rmo 3363 df-reu 3364 df-rab 3420 df-v 3465 df-sbc 3771 df-csb 3880 df-dif 3934 df-un 3936 df-in 3938 df-ss 3948 df-pss 3951 df-nul 4314 df-if 4506 df-pw 4582 df-sn 4607 df-pr 4609 df-tp 4611 df-op 4613 df-uni 4888 df-int 4927 df-iun 4973 df-iin 4974 df-br 5124 df-opab 5186 df-mpt 5206 df-tr 5240 df-id 5558 df-eprel 5564 df-po 5572 df-so 5573 df-fr 5617 df-we 5619 df-xp 5671 df-rel 5672 df-cnv 5673 df-co 5674 df-dm 5675 df-rn 5676 df-res 5677 df-ima 5678 df-pred 6301 df-ord 6366 df-on 6367 df-lim 6368 df-suc 6369 df-iota 6493 df-fun 6542 df-fn 6543 df-f 6544 df-f1 6545 df-fo 6546 df-f1o 6547 df-fv 6548 df-isom 6549 df-riota 7369 df-ov 7415 df-oprab 7416 df-mpo 7417 df-om 7869 df-1st 7995 df-2nd 7996 df-frecs 8287 df-wrecs 8318 df-recs 8392 df-rdg 8431 df-1o 8487 df-2o 8488 df-er 8726 df-map 8849 df-en 8967 df-dom 8968 df-sdom 8969 df-fin 8970 df-fi 9432 df-sup 9463 df-inf 9464 df-pnf 11278 df-mnf 11279 df-xr 11280 df-ltxr 11281 df-le 11282 df-sub 11475 df-neg 11476 df-div 11902 df-nn 12248 df-2 12310 df-3 12311 df-4 12312 df-5 12313 df-6 12314 df-7 12315 df-8 12316 df-9 12317 df-n0 12509 df-z 12596 df-dec 12716 df-uz 12860 df-q 12972 df-rp 13016 df-xneg 13135 df-xadd 13136 df-xmul 13137 df-ioo 13372 df-ioc 13373 df-ico 13374 df-icc 13375 df-fz 13529 df-seq 14024 df-exp 14084 df-cj 15119 df-re 15120 df-im 15121 df-sqrt 15255 df-abs 15256 df-struct 17165 df-slot 17200 df-ndx 17212 df-base 17229 df-plusg 17285 df-mulr 17286 df-starv 17287 df-tset 17291 df-ple 17292 df-ds 17294 df-unif 17295 df-rest 17437 df-topn 17438 df-topgen 17458 df-ordt 17516 df-ps 18579 df-tsr 18580 df-psmet 21317 df-xmet 21318 df-met 21319 df-bl 21320 df-mopn 21321 df-cnfld 21326 df-top 22847 df-topon 22864 df-topsp 22886 df-bases 22899 df-cn 23180 df-hmeo 23708 df-hmph 23709 df-xms 24274 df-ms 24275 df-ii 24838 |
| This theorem is referenced by: (None) |
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