Theorem imaeq1i 5079

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

Hypothesis

Ref	Expression
imaeq1i.1	⊢ 𝐴 = 𝐵

Assertion

Ref	Expression
imaeq1i	⊢ (𝐴 “ 𝐶) = (𝐵 “ 𝐶)

Proof of Theorem imaeq1i

Step	Hyp	Ref	Expression
1		imaeq1i.1	. 2 ⊢ 𝐴 = 𝐵
2		imaeq1 5077	. 2 ⊢ (𝐴 = 𝐵 → (𝐴 “ 𝐶) = (𝐵 “ 𝐶))
3	1, 2	ax-mp 5	1 ⊢ (𝐴 “ 𝐶) = (𝐵 “ 𝐶)

Syntax hints:   = wceq 1398   “ cima 4734

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 717  ax-5 1496  ax-7 1497  ax-gen 1498  ax-ie1 1542  ax-ie2 1543  ax-8 1553  ax-10 1554  ax-11 1555  ax-i12 1556  ax-bndl 1558  ax-4 1559  ax-17 1575  ax-i9 1579  ax-ial 1583  ax-i5r 1584  ax-ext 2213

This theorem depends on definitions:  df-bi 117  df-3an 1007  df-tru 1401  df-nf 1510  df-sb 1811  df-clab 2218  df-cleq 2224  df-clel 2227  df-nfc 2364  df-v 2805  df-un 3205  df-in 3207  df-ss 3214  df-sn 3679  df-pr 3680  df-op 3682  df-br 4094  df-opab 4156  df-cnv 4739  df-dm 4741  df-rn 4742  df-res 4743  df-ima 4744

This theorem is referenced by:  mptpreima  5237  isarep2  5424  suppcofn  6444  infrenegsupex  9872  infxrnegsupex  11886  ssidcn  15004  cnco  15015