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Theorem imaeq2 5072
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 5008 . . 3 (𝐴 = 𝐵 → (𝐶𝐴) = (𝐶𝐵))
21rneqd 4961 . 2 (𝐴 = 𝐵 → ran (𝐶𝐴) = ran (𝐶𝐵))
3 df-ima 4738 . 2 (𝐶𝐴) = ran (𝐶𝐴)
4 df-ima 4738 . 2 (𝐶𝐵) = ran (𝐶𝐵)
52, 3, 43eqtr4g 2289 1 (𝐴 = 𝐵 → (𝐶𝐴) = (𝐶𝐵))
Colors of variables: wff set class
Syntax hints:  wi 4   = wceq 1397  ran crn 4726  cres 4727  cima 4728
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 716  ax-5 1495  ax-7 1496  ax-gen 1497  ax-ie1 1541  ax-ie2 1542  ax-8 1552  ax-10 1553  ax-11 1554  ax-i12 1555  ax-bndl 1557  ax-4 1558  ax-17 1574  ax-i9 1578  ax-ial 1582  ax-i5r 1583  ax-ext 2213
This theorem depends on definitions:  df-bi 117  df-3an 1006  df-tru 1400  df-nf 1509  df-sb 1811  df-clab 2218  df-cleq 2224  df-clel 2227  df-nfc 2363  df-v 2804  df-un 3204  df-in 3206  df-ss 3213  df-sn 3675  df-pr 3676  df-op 3678  df-br 4089  df-opab 4151  df-xp 4731  df-cnv 4733  df-dm 4735  df-rn 4736  df-res 4737  df-ima 4738
This theorem is referenced by:  imaeq2i  5074  imaeq2d  5076  fimadmfo  5568  ssimaex  5707  ssimaexg  5708  isoselem  5961  f1opw2  6229  fopwdom  7022  ssenen  7037  fiintim  7123  fidcenumlemrk  7153  fidcenumlemr  7154  sbthlem2  7157  isbth  7166  ennnfonelemp1  13032  ennnfonelemnn0  13048  ctinfomlemom  13053  ctinfom  13054  tgcn  14938  iscnp4  14948  cnpnei  14949  cnima  14950  cnconst2  14963  cnrest2  14966  cnptoprest  14969  txcnp  15001  txcnmpt  15003  metcnp3  15241
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