Theorem reldmress 17454

Description: The structure restriction is a proper operator, so it can be used with ovprc1 7490. (Contributed by Stefan O'Rear, 29-Nov-2014.)

Assertion

Ref	Expression
reldmress	⊢ Rel dom ↾s

Proof of Theorem reldmress

Dummy variables 𝑤 𝑎 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		df-ress 17453	. 2 ⊢ ↾s = (𝑤 ∈ V, 𝑎 ∈ V ↦ if((Base‘𝑤) ⊆ 𝑎, 𝑤, (𝑤 sSet ⟨(Base‘ndx), (𝑎 ∩ (Base‘𝑤))⟩)))
2	1	reldmmpo 7584	1 ⊢ Rel dom ↾s

This proof depends on syntax axioms:  Vcvv 3454   ⊆ wss 3900   ∩ cin 4092  ifcif 4485  ⟨cop 4840  dom cdm 5658  Rel wrel 5663  ‘cfv 6566  (class class class)co 7451   sSet csts 17385  ndxcnx 17415  Basecbs 17431   ↾_s cress 17452

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-10 2180  ax-11 2197  ax-12 2216  ax-ext 2735  ax-sep 5255  ax-pr 5398

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-nf 1817  df-sb 2102  df-clab 2742  df-cleq 2755  df-clel 2839  df-nfc 2913  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 4841  df-br 5109  df-opab 5174  df-xp 5664  df-rel 5665  df-dm 5668  df-oprab 7455  df-mpo 7456  df-ress 17453

This theorem is used by:  ressbas  17458  ressbasssg  17459  ressbasssOLD  17462  resseqnbas  17464  ress0  17465  ressinbas  17467  ressress  17469  wunress  17471  subcmn  20102  submomnd  20397  suborng  21184  srasca  21506  rlmsca2  21525  resstopn  23559  cphsubrglem  25553