Theorem imaeq2i 4949

Description: Equality theorem for image. (Contributed by NM, 21-Dec-2008.)

Hypothesis

Ref	Expression
imaeq1i.1	⊢ 𝐴 = 𝐵

Assertion

Ref	Expression
imaeq2i	⊢ (𝐶 “ 𝐴) = (𝐶 “ 𝐵)

Proof of Theorem imaeq2i

Step	Hyp	Ref	Expression
1		imaeq1i.1	. 2 ⊢ 𝐴 = 𝐵
2		imaeq2 4947	. 2 ⊢ (𝐴 = 𝐵 → (𝐶 “ 𝐴) = (𝐶 “ 𝐵))
3	1, 2	ax-mp 5	1 ⊢ (𝐶 “ 𝐴) = (𝐶 “ 𝐵)

Syntax hints:   = wceq 1348   “ cima 4612

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 105  ax-ia2 106  ax-ia3 107  ax-io 704  ax-5 1440  ax-7 1441  ax-gen 1442  ax-ie1 1486  ax-ie2 1487  ax-8 1497  ax-10 1498  ax-11 1499  ax-i12 1500  ax-bndl 1502  ax-4 1503  ax-17 1519  ax-i9 1523  ax-ial 1527  ax-i5r 1528  ax-ext 2152

This theorem depends on definitions:  df-bi 116  df-3an 975  df-tru 1351  df-nf 1454  df-sb 1756  df-clab 2157  df-cleq 2163  df-clel 2166  df-nfc 2301  df-v 2732  df-un 3125  df-in 3127  df-ss 3134  df-sn 3587  df-pr 3588  df-op 3590  df-br 3988  df-opab 4049  df-xp 4615  df-cnv 4617  df-dm 4619  df-rn 4620  df-res 4621  df-ima 4622

This theorem is referenced by:  cnvimarndm  4973  dmco  5117  fnimapr  5554  ssimaex  5555  imauni  5738  isoini2  5796  uniqs  6568  fiintim  6903  fidcenumlemrks  6927  fidcenumlemr  6929  nn0supp  9176  ennnfonelem1  12351  ennnfonelemhf1o  12357  retopbas  13278