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Theorem s1eqd 13381
Description: Equality theorem for a singleton word. (Contributed by Mario Carneiro, 26-Feb-2016.)
Hypothesis
Ref Expression
s1eqd.1 (𝜑𝐴 = 𝐵)
Assertion
Ref Expression
s1eqd (𝜑 → ⟨“𝐴”⟩ = ⟨“𝐵”⟩)

Proof of Theorem s1eqd
StepHypRef Expression
1 s1eqd.1 . 2 (𝜑𝐴 = 𝐵)
2 s1eq 13380 . 2 (𝐴 = 𝐵 → ⟨“𝐴”⟩ = ⟨“𝐵”⟩)
31, 2syl 17 1 (𝜑 → ⟨“𝐴”⟩ = ⟨“𝐵”⟩)
Colors of variables: wff setvar class
Syntax hints:  wi 4   = wceq 1483  ⟨“cs1 13294
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1722  ax-4 1737  ax-5 1839  ax-6 1888  ax-7 1935  ax-9 1999  ax-10 2019  ax-11 2034  ax-12 2047  ax-13 2246  ax-ext 2602
This theorem depends on definitions:  df-bi 197  df-or 385  df-an 386  df-3an 1039  df-tru 1486  df-ex 1705  df-nf 1710  df-sb 1881  df-clab 2609  df-cleq 2615  df-clel 2618  df-nfc 2753  df-rex 2918  df-rab 2921  df-v 3202  df-dif 3577  df-un 3579  df-in 3581  df-ss 3588  df-nul 3916  df-if 4087  df-sn 4178  df-pr 4180  df-op 4184  df-uni 4437  df-br 4654  df-iota 5851  df-fv 5896  df-s1 13302
This theorem is referenced by:  swrds1  13451  swrdlsw  13452  swrdccatwrd  13468  s2eqd  13608  s3eqd  13609  s4eqd  13610  s5eqd  13611  s6eqd  13612  s7eqd  13613  s8eqd  13614  frmdgsum  17399  psgnunilem5  17914  efgredlemc  18158  vrgpval  18180  vrgpinv  18182  frgpup2  18189  frgpup3lem  18190  iwrdsplit  30449  sseqval  30450  sseqf  30454  sseqp1  30457  signsvtn0  30647  signstfveq0  30654  mrsubcv  31407  reuccatpfxs1lem  41433  reuccatpfxs1  41434
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