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Theorem cnmptid 22512
Description: The identity function is continuous. (Contributed by Mario Carneiro, 5-May-2014.) (Revised by Mario Carneiro, 22-Aug-2015.)
Hypothesis
Ref Expression
cnmptid.j (𝜑𝐽 ∈ (TopOn‘𝑋))
Assertion
Ref Expression
cnmptid (𝜑 → (𝑥𝑋𝑥) ∈ (𝐽 Cn 𝐽))
Distinct variable groups:   𝜑,𝑥   𝑥,𝐽   𝑥,𝑋

Proof of Theorem cnmptid
StepHypRef Expression
1 mptresid 5903 . 2 ( I ↾ 𝑋) = (𝑥𝑋𝑥)
2 cnmptid.j . . 3 (𝜑𝐽 ∈ (TopOn‘𝑋))
3 idcn 22108 . . 3 (𝐽 ∈ (TopOn‘𝑋) → ( I ↾ 𝑋) ∈ (𝐽 Cn 𝐽))
42, 3syl 17 . 2 (𝜑 → ( I ↾ 𝑋) ∈ (𝐽 Cn 𝐽))
51, 4eqeltrrid 2836 1 (𝜑 → (𝑥𝑋𝑥) ∈ (𝐽 Cn 𝐽))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wcel 2112  cmpt 5120   I cid 5439  cres 5538  cfv 6358  (class class class)co 7191  TopOnctopon 21761   Cn ccn 22075
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1803  ax-4 1817  ax-5 1918  ax-6 1976  ax-7 2018  ax-8 2114  ax-9 2122  ax-10 2143  ax-11 2160  ax-12 2177  ax-ext 2708  ax-sep 5177  ax-nul 5184  ax-pow 5243  ax-pr 5307  ax-un 7501
This theorem depends on definitions:  df-bi 210  df-an 400  df-or 848  df-3an 1091  df-tru 1546  df-fal 1556  df-ex 1788  df-nf 1792  df-sb 2073  df-mo 2539  df-eu 2568  df-clab 2715  df-cleq 2728  df-clel 2809  df-nfc 2879  df-ne 2933  df-ral 3056  df-rex 3057  df-rab 3060  df-v 3400  df-sbc 3684  df-dif 3856  df-un 3858  df-in 3860  df-ss 3870  df-nul 4224  df-if 4426  df-pw 4501  df-sn 4528  df-pr 4530  df-op 4534  df-uni 4806  df-br 5040  df-opab 5102  df-mpt 5121  df-id 5440  df-xp 5542  df-rel 5543  df-cnv 5544  df-co 5545  df-dm 5546  df-rn 5547  df-res 5548  df-ima 5549  df-iota 6316  df-fun 6360  df-fn 6361  df-f 6362  df-f1 6363  df-fo 6364  df-f1o 6365  df-fv 6366  df-ov 7194  df-oprab 7195  df-mpo 7196  df-map 8488  df-top 21745  df-topon 21762  df-cn 22078
This theorem is referenced by:  xkoinjcn  22538  txconn  22540  imasnopn  22541  imasncld  22542  imasncls  22543  pt1hmeo  22657  istgp2  22942  tmdmulg  22943  tmdlactcn  22953  clsnsg  22961  tgpt0  22970  tlmtgp  23047  nmcn  23695  expcn  23723  divccn  23724  cncfmptid  23764  cdivcncf  23772  iirevcn  23781  iihalf1cn  23783  iihalf2cn  23785  icchmeo  23792  evth2  23811  pcocn  23868  pcopt  23873  pcopt2  23874  pcoass  23875  csscld  24100  clsocv  24101  dvcnvlem  24827  resqrtcn  25589  sqrtcn  25590  efrlim  25806  ipasslem7  28871  occllem  29338  hmopidmchi  30186  rmulccn  31546  cxpcncf1  32241  cvxpconn  32871  cvmlift2lem2  32933  cvmlift2lem3  32934  cvmliftphtlem  32946  knoppcnlem10  34368  cxpcncf2  43058
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