ILE Home Intuitionistic Logic Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  ILE Home  >  Th. List  >  imaeq2d Unicode version

Theorem imaeq2d 5010
Description: Equality theorem for image. (Contributed by FL, 15-Dec-2006.)
Hypothesis
Ref Expression
imaeq1d.1  |-  ( ph  ->  A  =  B )
Assertion
Ref Expression
imaeq2d  |-  ( ph  ->  ( C " A
)  =  ( C
" B ) )

Proof of Theorem imaeq2d
StepHypRef Expression
1 imaeq1d.1 . 2  |-  ( ph  ->  A  =  B )
2 imaeq2 5006 . 2  |-  ( A  =  B  ->  ( C " A )  =  ( C " B
) )
31, 2syl 14 1  |-  ( ph  ->  ( C " A
)  =  ( C
" B ) )
Colors of variables: wff set class
Syntax hints:    -> wi 4    = wceq 1364   "cima 4667
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 710  ax-5 1461  ax-7 1462  ax-gen 1463  ax-ie1 1507  ax-ie2 1508  ax-8 1518  ax-10 1519  ax-11 1520  ax-i12 1521  ax-bndl 1523  ax-4 1524  ax-17 1540  ax-i9 1544  ax-ial 1548  ax-i5r 1549  ax-ext 2178
This theorem depends on definitions:  df-bi 117  df-3an 982  df-tru 1367  df-nf 1475  df-sb 1777  df-clab 2183  df-cleq 2189  df-clel 2192  df-nfc 2328  df-v 2765  df-un 3161  df-in 3163  df-ss 3170  df-sn 3629  df-pr 3630  df-op 3632  df-br 4035  df-opab 4096  df-xp 4670  df-cnv 4672  df-dm 4674  df-rn 4675  df-res 4676  df-ima 4677
This theorem is referenced by:  imaeq12d  5011  nfimad  5019  elimasng  5038  ressn  5211  foima  5486  f1imacnv  5522  fvco2  5631  fsn2  5737  resfunexg  5784  funfvima3  5797  funiunfvdm  5811  isoselem  5868  fnexALT  6169  eceq1  6628  uniqs2  6655  ecinxp  6670  mapsn  6750  phplem4  6917  phplem4dom  6924  phplem4on  6929  sbthlem2  7025  isbth  7034  resunimafz0  10925  ennnfonelemg  12630  ennnfonelemhf1o  12640  ennnfonelemex  12641  ennnfonelemrn  12646  cnntr  14471  cnptopresti  14484  cnptoprest  14485
  Copyright terms: Public domain W3C validator