Theorem reseq2i 4906

Description: Equality inference for restrictions. (Contributed by Paul Chapman, 22-Jun-2011.)

Hypothesis

Ref	Expression
reseqi.1	⊢ 𝐴 = 𝐵

Assertion

Ref	Expression
reseq2i	⊢ (𝐶 ↾ 𝐴) = (𝐶 ↾ 𝐵)

Proof of Theorem reseq2i

Step	Hyp	Ref	Expression
1		reseqi.1	. 2 ⊢ 𝐴 = 𝐵
2		reseq2 4904	. 2 ⊢ (𝐴 = 𝐵 → (𝐶 ↾ 𝐴) = (𝐶 ↾ 𝐵))
3	1, 2	ax-mp 5	1 ⊢ (𝐶 ↾ 𝐴) = (𝐶 ↾ 𝐵)

Syntax hints:   = wceq 1353   ↾ cres 4630

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 709  ax-5 1447  ax-7 1448  ax-gen 1449  ax-ie1 1493  ax-ie2 1494  ax-8 1504  ax-10 1505  ax-11 1506  ax-i12 1507  ax-bndl 1509  ax-4 1510  ax-17 1526  ax-i9 1530  ax-ial 1534  ax-i5r 1535  ax-ext 2159

This theorem depends on definitions:  df-bi 117  df-tru 1356  df-nf 1461  df-sb 1763  df-clab 2164  df-cleq 2170  df-clel 2173  df-nfc 2308  df-v 2741  df-in 3137  df-opab 4067  df-xp 4634  df-res 4640

This theorem is referenced by:  reseq12i  4907  rescom  4934  resdmdfsn  4952  rescnvcnv  5093  resdm2  5121  funcnvres  5291  funimaexg  5302  resdif  5485  frecfnom  6404  facnn  10709  fac0  10710  expcnv  11514  setsslid  12515  uptx  13813  txcn  13814