Theorem ishmeo 22051

Description: The predicate F is a homeomorphism between topology 𝐽 and topology 𝐾. Proposition of [BourbakiTop1] p. I.2. (Contributed by FL, 14-Feb-2007.) (Revised by Mario Carneiro, 22-Aug-2015.)

Assertion

Ref	Expression
ishmeo	⊢ (𝐹 ∈ (𝐽Homeo𝐾) ↔ (𝐹 ∈ (𝐽 Cn 𝐾) ∧ ◡𝐹 ∈ (𝐾 Cn 𝐽)))

Proof of Theorem ishmeo

Dummy variable 𝑓 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		cnveq 5630	. . 3 ⊢ (𝑓 = 𝐹 → ◡𝑓 = ◡𝐹)
2	1	eleq1d 2867	. 2 ⊢ (𝑓 = 𝐹 → (◡𝑓 ∈ (𝐾 Cn 𝐽) ↔ ◡𝐹 ∈ (𝐾 Cn 𝐽)))
3		hmeofval 22050	. 2 ⊢ (𝐽Homeo𝐾) = {𝑓 ∈ (𝐽 Cn 𝐾) ∣ ◡𝑓 ∈ (𝐾 Cn 𝐽)}
4	2, 3	elrab2 3621	1 ⊢ (𝐹 ∈ (𝐽Homeo𝐾) ↔ (𝐹 ∈ (𝐽 Cn 𝐾) ∧ ◡𝐹 ∈ (𝐾 Cn 𝐽)))

Syntax hints:   ↔ wb 207   ∧ wa 396   = wceq 1522   ∈ wcel 2081  ^◡ccnv 5442  (class class class)co 7016   Cn ccn 21516  Homeochmeo 22045

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1777  ax-4 1791  ax-5 1888  ax-6 1947  ax-7 1992  ax-8 2083  ax-9 2091  ax-10 2112  ax-11 2126  ax-12 2141  ax-13 2344  ax-ext 2769  ax-sep 5094  ax-nul 5101  ax-pow 5157  ax-pr 5221  ax-un 7319

This theorem depends on definitions:  df-bi 208  df-an 397  df-or 843  df-3an 1082  df-tru 1525  df-ex 1762  df-nf 1766  df-sb 2043  df-mo 2576  df-eu 2612  df-clab 2776  df-cleq 2788  df-clel 2863  df-nfc 2935  df-ral 3110  df-rex 3111  df-rab 3114  df-v 3439  df-sbc 3707  df-dif 3862  df-un 3864  df-in 3866  df-ss 3874  df-nul 4212  df-if 4382  df-pw 4455  df-sn 4473  df-pr 4475  df-op 4479  df-uni 4746  df-br 4963  df-opab 5025  df-mpt 5042  df-id 5348  df-xp 5449  df-rel 5450  df-cnv 5451  df-co 5452  df-dm 5453  df-rn 5454  df-res 5455  df-ima 5456  df-iota 6189  df-fun 6227  df-fn 6228  df-f 6229  df-fv 6233  df-ov 7019  df-oprab 7020  df-mpo 7021  df-map 8258  df-top 21186  df-topon 21203  df-cn 21519  df-hmeo 22047

This theorem is referenced by:  hmeocn  22052  hmeocnvcn  22053  hmeocnv  22054  hmeores  22063  hmeoco  22064  idhmeo  22065  indishmph  22090  cmphaushmeo  22092  ordthmeo  22094  txhmeo  22095  txswaphmeo  22097  pt1hmeo  22098  ptunhmeo  22100  xkohmeo  22107  qtopf1  22108  qtophmeo  22109  grpinvhmeo  22378  tgplacthmeo  22395  cncfcnvcn  23212  icchmeo  23228  cnrehmeo  23240  cnheiborlem  23241  ismtyhmeo  34634