Theorem ovprc 6338

Description: The value of an operation when the one of the arguments is a proper class. Note: this theorem is dependent on our particular definitions of operation value, function value, and ordered pair. (Contributed by Mario Carneiro, 26-Apr-2015.)

Hypothesis

Ref	Expression
ovprc1.1	|- Rel dom F

Assertion

Ref	Expression
ovprc	|- ( -. ( A e. _V /\ B e. _V ) -> ( A F B ) = (/) )

Proof of Theorem ovprc

Step	Hyp	Ref	Expression
1		df-ov 6311	. 2 |- ( A F B ) = ( F ` <. A , B >. )
2		df-br 4396	. . . . 5 |- ( A dom F B <-> <. A , B >. e. dom F )
3		ovprc1.1	. . . . . 6 |- Rel dom F
4		brrelex12 4877	. . . . . 6 |- ( ( Rel dom F /\ A dom F B ) -> ( A e. _V /\ B e. _V ) )
5	3, 4	mpan 684	. . . . 5 |- ( A dom F B -> ( A e. _V /\ B e. _V ) )
6	2, 5	sylbir 218	. . . 4 |- ( <. A , B >. e. dom F -> ( A e. _V /\ B e. _V ) )
7	6	con3i 142	. . 3 |- ( -. ( A e. _V /\ B e. _V ) -> -. <. A , B >. e. dom F )
8		ndmfv 5903	. . 3 |- ( -. <. A , B >. e. dom F -> ( F ` <. A , B >. ) = (/) )
9	7, 8	syl 17	. 2 |- ( -. ( A e. _V /\ B e. _V ) -> ( F ` <. A , B >. ) = (/) )
10	1, 9	syl5eq 2517	1 |- ( -. ( A e. _V /\ B e. _V ) -> ( A F B ) = (/) )

Syntax hints:   -. wn 3   -> wi 4   /\ wa 376   = wceq 1452   e. wcel 1904   _Vcvv 3031   (/)c0 3722   <.cop 3965   class class class wbr 4395   dom cdm 4839   Rel wrel 4844   ` cfv 5589  (class class class)co 6308

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1677  ax-4 1690  ax-5 1766  ax-6 1813  ax-7 1859  ax-8 1906  ax-9 1913  ax-10 1932  ax-11 1937  ax-12 1950  ax-13 2104  ax-ext 2451  ax-sep 4518  ax-nul 4527  ax-pow 4579  ax-pr 4639

This theorem depends on definitions:  df-bi 190  df-or 377  df-an 378  df-3an 1009  df-tru 1455  df-ex 1672  df-nf 1676  df-sb 1806  df-eu 2323  df-mo 2324  df-clab 2458  df-cleq 2464  df-clel 2467  df-nfc 2601  df-ne 2643  df-ral 2761  df-rex 2762  df-rab 2765  df-v 3033  df-dif 3393  df-un 3395  df-in 3397  df-ss 3404  df-nul 3723  df-if 3873  df-sn 3960  df-pr 3962  df-op 3966  df-uni 4191  df-br 4396  df-opab 4455  df-xp 4845  df-rel 4846  df-dm 4849  df-iota 5553  df-fv 5597  df-ov 6311

This theorem is referenced by:  ovprc1  6339  ovprc2  6340  ovrcl  6341  elbasov  15249  firest  15409  psrplusg  18682  psrmulr  18685  psrvscafval  18691  mplval  18729  opsrle  18776  opsrbaslem  18778  evlval  18824  matbas0pc  19511  mdetfval  19688  madufval  19739  mdegfval  23090  nbgrprc0  39566