Theorem reldmresv 29826

Description: The scalar restriction is a proper operator, so it can be used with ovprc1 6684. (Contributed by Thierry Arnoux, 6-Sep-2018.)

Assertion

Ref	Expression
reldmresv	|- Rel dom ↾v

Proof of Theorem reldmresv

Dummy variables x y are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		df-resv 29825	. 2 |- ↾v = ( y e. _V , x e. _V |-> if ( ( Base ` (Scalar ` y ) ) C_ x , y , ( y sSet <. (Scalar ` ndx ) , ( (Scalar ` y ) ↾s x ) >. ) ) )
2	1	reldmmpt2 6771	1 |- Rel dom ↾v

Syntax hints:   _Vcvv 3200   C_ wss 3574   ifcif 4086   <.cop 4183   dom cdm 5114   Rel wrel 5119   ` cfv 5888  (class class class)co 6650   ndxcnx 15854   sSet csts 15855   Basecbs 15857   ↾_s cress 15858  Scalarcsca 15944   ↾_v cresv 29824

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  ax-sep 4781  ax-nul 4789  ax-pr 4906

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-eu 2474  df-mo 2475  df-clab 2609  df-cleq 2615  df-clel 2618  df-nfc 2753  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-br 4654  df-opab 4713  df-xp 5120  df-rel 5121  df-dm 5124  df-oprab 6654  df-mpt2 6655  df-resv 29825

This theorem is referenced by:  resvsca  29830  resvlem  29831