Theorem reldmress 17143

Description: The structure restriction is a proper operator, so it can be used with ovprc1 7385. (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 17142	. 2 ⊢ ↾s = (𝑤 ∈ V, 𝑎 ∈ V ↦ if((Base‘𝑤) ⊆ 𝑎, 𝑤, (𝑤 sSet ⟨(Base‘ndx), (𝑎 ∩ (Base‘𝑤))⟩)))
2	1	reldmmpo 7480	1 ⊢ Rel dom ↾s

Syntax hints:  Vcvv 3436   ∩ cin 3901   ⊆ wss 3902  ifcif 4475  ⟨cop 4582  dom cdm 5616  Rel wrel 5621  ‘cfv 6481  (class class class)co 7346   sSet csts 17074  ndxcnx 17104  Basecbs 17120   ↾_s cress 17141

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1796  ax-4 1810  ax-5 1911  ax-6 1968  ax-7 2009  ax-8 2113  ax-9 2121  ax-10 2144  ax-11 2160  ax-12 2180  ax-ext 2703  ax-sep 5234  ax-nul 5244  ax-pr 5370

This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3an 1088  df-tru 1544  df-fal 1554  df-ex 1781  df-nf 1785  df-sb 2068  df-mo 2535  df-eu 2564  df-clab 2710  df-cleq 2723  df-clel 2806  df-nfc 2881  df-rab 3396  df-v 3438  df-dif 3905  df-un 3907  df-ss 3919  df-nul 4284  df-if 4476  df-sn 4577  df-pr 4579  df-op 4583  df-br 5092  df-opab 5154  df-xp 5622  df-rel 5623  df-dm 5626  df-oprab 7350  df-mpo 7351  df-ress 17142

This theorem is referenced by:  ressbas  17147  ressbasssg  17148  ressbasssOLD  17151  resseqnbas  17153  ress0  17154  ressinbas  17156  ressress  17158  wunress  17160  subcmn  19750  submomnd  20045  suborng  20792  srasca  21115  rlmsca2  21134  resstopn  23102  cphsubrglem  25105