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Theorem cnmptid 23599
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 6038 . 2 ( I ↾ 𝑋) = (𝑥𝑋𝑥)
2 cnmptid.j . . 3 (𝜑𝐽 ∈ (TopOn‘𝑋))
3 idcn 23195 . . 3 (𝐽 ∈ (TopOn‘𝑋) → ( I ↾ 𝑋) ∈ (𝐽 Cn 𝐽))
42, 3syl 17 . 2 (𝜑 → ( I ↾ 𝑋) ∈ (𝐽 Cn 𝐽))
51, 4eqeltrrid 2839 1 (𝜑 → (𝑥𝑋𝑥) ∈ (𝐽 Cn 𝐽))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wcel 2108  cmpt 5201   I cid 5547  cres 5656  cfv 6531  (class class class)co 7405  TopOnctopon 22848   Cn ccn 23162
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1795  ax-4 1809  ax-5 1910  ax-6 1967  ax-7 2007  ax-8 2110  ax-9 2118  ax-10 2141  ax-11 2157  ax-12 2177  ax-ext 2707  ax-sep 5266  ax-nul 5276  ax-pow 5335  ax-pr 5402  ax-un 7729
This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3an 1088  df-tru 1543  df-fal 1553  df-ex 1780  df-nf 1784  df-sb 2065  df-mo 2539  df-eu 2568  df-clab 2714  df-cleq 2727  df-clel 2809  df-nfc 2885  df-ne 2933  df-ral 3052  df-rex 3061  df-rab 3416  df-v 3461  df-sbc 3766  df-dif 3929  df-un 3931  df-in 3933  df-ss 3943  df-nul 4309  df-if 4501  df-pw 4577  df-sn 4602  df-pr 4604  df-op 4608  df-uni 4884  df-br 5120  df-opab 5182  df-mpt 5202  df-id 5548  df-xp 5660  df-rel 5661  df-cnv 5662  df-co 5663  df-dm 5664  df-rn 5665  df-res 5666  df-ima 5667  df-iota 6484  df-fun 6533  df-fn 6534  df-f 6535  df-f1 6536  df-fo 6537  df-f1o 6538  df-fv 6539  df-ov 7408  df-oprab 7409  df-mpo 7410  df-map 8842  df-top 22832  df-topon 22849  df-cn 23165
This theorem is referenced by:  xkoinjcn  23625  txconn  23627  imasnopn  23628  imasncld  23629  imasncls  23630  pt1hmeo  23744  istgp2  24029  tmdmulg  24030  tmdlactcn  24040  clsnsg  24048  tgpt0  24057  tlmtgp  24134  nmcn  24784  expcn  24814  divccn  24815  expcnOLD  24816  divccnOLD  24817  cncfmptid  24857  cdivcncf  24865  iirevcn  24875  iihalf1cn  24877  iihalf1cnOLD  24878  iihalf2cn  24880  iihalf2cnOLD  24881  icchmeo  24889  icchmeoOLD  24890  evth2  24910  pcocn  24968  pcopt  24973  pcopt2  24974  pcoass  24975  csscld  25201  clsocv  25202  dvcnvlem  25932  resqrtcn  26711  sqrtcn  26712  efrlim  26931  efrlimOLD  26932  ipasslem7  30817  occllem  31284  hmopidmchi  32132  rmulccn  33959  cxpcncf1  34627  cvxpconn  35264  cvmlift2lem2  35326  cvmlift2lem3  35327  cvmliftphtlem  35339  knoppcnlem10  36520  cxpcncf2  45928
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