Theorem reseq2i 4943

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 4941	. 2 ⊢ (𝐴 = 𝐵 → (𝐶 ↾ 𝐴) = (𝐶 ↾ 𝐵))
3	1, 2	ax-mp 5	1 ⊢ (𝐶 ↾ 𝐴) = (𝐶 ↾ 𝐵)

Syntax hints:   = wceq 1364   ↾ cres 4665

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-tru 1367  df-nf 1475  df-sb 1777  df-clab 2183  df-cleq 2189  df-clel 2192  df-nfc 2328  df-v 2765  df-in 3163  df-opab 4095  df-xp 4669  df-res 4675

This theorem is referenced by:  reseq12i  4944  rescom  4971  resdmdfsn  4989  rescnvcnv  5132  resdm2  5160  funcnvres  5331  funimaexg  5342  resdif  5526  frecfnom  6459  facnn  10819  fac0  10820  expcnv  11669  setsslid  12729  uptx  14510  txcn  14511