Theorem reseq1d 4942

Description: Equality deduction for restrictions. (Contributed by NM, 21-Oct-2014.)

Hypothesis

Ref	Expression
reseqd.1	⊢ (𝜑 → 𝐴 = 𝐵)

Assertion

Ref	Expression
reseq1d	⊢ (𝜑 → (𝐴 ↾ 𝐶) = (𝐵 ↾ 𝐶))

Proof of Theorem reseq1d

Step	Hyp	Ref	Expression
1		reseqd.1	. 2 ⊢ (𝜑 → 𝐴 = 𝐵)
2		reseq1 4937	. 2 ⊢ (𝐴 = 𝐵 → (𝐴 ↾ 𝐶) = (𝐵 ↾ 𝐶))
3	1, 2	syl 14	1 ⊢ (𝜑 → (𝐴 ↾ 𝐶) = (𝐵 ↾ 𝐶))

Syntax hints:   → wi 4   = wceq 1364   ↾ cres 4662

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 1458  ax-7 1459  ax-gen 1460  ax-ie1 1504  ax-ie2 1505  ax-8 1515  ax-10 1516  ax-11 1517  ax-i12 1518  ax-bndl 1520  ax-4 1521  ax-17 1537  ax-i9 1541  ax-ial 1545  ax-i5r 1546  ax-ext 2175

This theorem depends on definitions:  df-bi 117  df-tru 1367  df-nf 1472  df-sb 1774  df-clab 2180  df-cleq 2186  df-clel 2189  df-nfc 2325  df-v 2762  df-in 3160  df-res 4672

This theorem is referenced by:  reseq12d  4944  fun2ssres  5298  funcnvres2  5330  funimaexg  5339  fresin  5433  offres  6189  tfrlemisucaccv  6380  tfrlemi1  6387  tfr1onlemsucaccv  6396  tfrcllemsucaccv  6409  freceq1  6447  freceq2  6448  fseq1p1m1  10163  setsresg  12659  setscom  12661  znle2  14151  dvcoapbr  14886  bj-charfundcALT  15371