Theorem imaeq12d 6066

Description: Equality theorem for image. (Contributed by Mario Carneiro, 4-Dec-2016.)

Hypotheses

Ref	Expression
imaeq1d.1	⊢ (𝜑 → 𝐴 = 𝐵)
imaeq12d.2	⊢ (𝜑 → 𝐶 = 𝐷)

Assertion

Ref	Expression
imaeq12d	⊢ (𝜑 → (𝐴 “ 𝐶) = (𝐵 “ 𝐷))

Proof of Theorem imaeq12d

Step	Hyp	Ref	Expression
1		imaeq1d.1	. . 3 ⊢ (𝜑 → 𝐴 = 𝐵)
2	1	imaeq1d 6064	. 2 ⊢ (𝜑 → (𝐴 “ 𝐶) = (𝐵 “ 𝐶))
3		imaeq12d.2	. . 3 ⊢ (𝜑 → 𝐶 = 𝐷)
4	3	imaeq2d 6065	. 2 ⊢ (𝜑 → (𝐵 “ 𝐶) = (𝐵 “ 𝐷))
5	2, 4	eqtrd 2798	1 ⊢ (𝜑 → (𝐴 “ 𝐶) = (𝐵 “ 𝐷))

This proof depends on syntax axioms:   → wi 4   = wceq 1570   “ cima 5659

This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1828  ax-4 1842  ax-5 1945  ax-6 2002  ax-7 2043  ax-8 2149  ax-9 2157  ax-ext 2735

This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3an 1105  df-tru 1573  df-fal 1583  df-ex 1813  df-sb 2102  df-clab 2742  df-cleq 2755  df-clel 2839  df-rab 3417  df-v 3456  df-ss 3901  df-dif 4050  df-in 4094  df-un 4154  df-nul 4282  df-if 4486  df-sn 4589  df-pr 4591  df-op 4839  df-br 5107  df-opab 5172  df-xp 5662  df-cnv 5664  df-dm 5666  df-rn 5667  df-res 5668  df-ima 5669

This theorem is used by:  csbima12  6089  predeq123  6326  vdwpc  17190  dmdprd  20247  isunit  20636  qtopval  24047  limciun  26247  ig1pval  26527  ispth  30339  esplyval  34277  irngval  34400  qqhval  34687  eulerpartgbij  35087  orvcval  35173  ballotlemrval  35233  ballotlemrinv0  35248  ballotlemrinv  35249  mthmval  36520  bj-projeq  38096  itg2addnclem2  38795  islmodfg  44275  heeq12  44979  isgrim  49195  imaf1hom  50439  imaidfu  50441  imasubc  50482  imassc  50484  imaid  50485