ILE Home Intuitionistic Logic Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  ILE Home  >  Th. List  >  imaeq2 GIF version

Theorem imaeq2 5070
Description: Equality theorem for image. (Contributed by NM, 14-Aug-1994.)
Assertion
Ref Expression
imaeq2 (𝐴 = 𝐵 → (𝐶𝐴) = (𝐶𝐵))

Proof of Theorem imaeq2
StepHypRef Expression
1 reseq2 5006 . . 3 (𝐴 = 𝐵 → (𝐶𝐴) = (𝐶𝐵))
21rneqd 4959 . 2 (𝐴 = 𝐵 → ran (𝐶𝐴) = ran (𝐶𝐵))
3 df-ima 4736 . 2 (𝐶𝐴) = ran (𝐶𝐴)
4 df-ima 4736 . 2 (𝐶𝐵) = ran (𝐶𝐵)
52, 3, 43eqtr4g 2287 1 (𝐴 = 𝐵 → (𝐶𝐴) = (𝐶𝐵))
Colors of variables: wff set class
Syntax hints:  wi 4   = wceq 1395  ran crn 4724  cres 4725  cima 4726
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-io 714  ax-5 1493  ax-7 1494  ax-gen 1495  ax-ie1 1539  ax-ie2 1540  ax-8 1550  ax-10 1551  ax-11 1552  ax-i12 1553  ax-bndl 1555  ax-4 1556  ax-17 1572  ax-i9 1576  ax-ial 1580  ax-i5r 1581  ax-ext 2211
This theorem depends on definitions:  df-bi 117  df-3an 1004  df-tru 1398  df-nf 1507  df-sb 1809  df-clab 2216  df-cleq 2222  df-clel 2225  df-nfc 2361  df-v 2802  df-un 3202  df-in 3204  df-ss 3211  df-sn 3673  df-pr 3674  df-op 3676  df-br 4087  df-opab 4149  df-xp 4729  df-cnv 4731  df-dm 4733  df-rn 4734  df-res 4735  df-ima 4736
This theorem is referenced by:  imaeq2i  5072  imaeq2d  5074  fimadmfo  5565  ssimaex  5703  ssimaexg  5704  isoselem  5956  f1opw2  6224  fopwdom  7017  ssenen  7032  fiintim  7116  fidcenumlemrk  7144  fidcenumlemr  7145  sbthlem2  7148  isbth  7157  ennnfonelemp1  13017  ennnfonelemnn0  13033  ctinfomlemom  13038  ctinfom  13039  tgcn  14922  iscnp4  14932  cnpnei  14933  cnima  14934  cnconst2  14947  cnrest2  14950  cnptoprest  14953  txcnp  14985  txcnmpt  14987  metcnp3  15225
  Copyright terms: Public domain W3C validator