P. 60 of Theorem List - Intuitionistic Logic Explorer

Theorem List for Intuitionistic Logic Explorer - 5901-6000   *Has distinct variable group(s)

Type	Label	Description
Statement
Theorem	reloprab 5901*	An operation class abstraction is a relation. (Contributed by NM, 16-Jun-2004.)
|- Rel { <. <. x , y >. , z >. | ph }
Theorem	nfoprab1 5902	The abstraction variables in an operation class abstraction are not free. (Contributed by NM, 25-Apr-1995.) (Revised by David Abernethy, 19-Jun-2012.)
|- F/_ x { <. <. x , y >. , z >. | ph }
Theorem	nfoprab2 5903	The abstraction variables in an operation class abstraction are not free. (Contributed by NM, 25-Apr-1995.) (Revised by David Abernethy, 30-Jul-2012.)
|- F/_ y { <. <. x , y >. , z >. | ph }
Theorem	nfoprab3 5904	The abstraction variables in an operation class abstraction are not free. (Contributed by NM, 22-Aug-2013.)
|- F/_ z { <. <. x , y >. , z >. | ph }
Theorem	nfoprab 5905*	Bound-variable hypothesis builder for an operation class abstraction. (Contributed by NM, 22-Aug-2013.)
|- F/ w ph   =>    |- F/_ w { <. <. x , y >. , z >. | ph }
Theorem	oprabbid 5906*	Equivalent wff's yield equal operation class abstractions (deduction form). (Contributed by NM, 21-Feb-2004.) (Revised by Mario Carneiro, 24-Jun-2014.)
|- F/ x ph   &    |- F/ y ph   &    |- F/ z ph   &    |- ( ph -> ( ps <-> ch ) )   =>    |- ( ph -> { <. <. x , y >. , z >. | ps } = { <. <. x , y >. , z >. | ch } )
Theorem	oprabbidv 5907*	Equivalent wff's yield equal operation class abstractions (deduction form). (Contributed by NM, 21-Feb-2004.)
|- ( ph -> ( ps <-> ch ) )   =>    |- ( ph -> { <. <. x , y >. , z >. | ps } = { <. <. x , y >. , z >. | ch } )
Theorem	oprabbii 5908*	Equivalent wff's yield equal operation class abstractions. (Contributed by NM, 28-May-1995.) (Revised by David Abernethy, 19-Jun-2012.)
|- ( ph <-> ps )   =>    |- { <. <. x , y >. , z >. | ph } = { <. <. x , y >. , z >. | ps }
Theorem	ssoprab2 5909	Equivalence of ordered pair abstraction subclass and implication. Compare ssopab2 4260. (Contributed by FL, 6-Nov-2013.) (Proof shortened by Mario Carneiro, 11-Dec-2016.)
|- ( A. x A. y A. z ( ph -> ps ) -> { <. <. x , y >. , z >. | ph } C_ { <. <. x , y >. , z >. | ps } )
Theorem	ssoprab2b 5910	Equivalence of ordered pair abstraction subclass and implication. Compare ssopab2b 4261. (Contributed by FL, 6-Nov-2013.) (Proof shortened by Mario Carneiro, 11-Dec-2016.)
|- ( { <. <. x , y >. , z >. | ph } C_ { <. <. x , y >. , z >. | ps } <-> A. x A. y A. z ( ph -> ps ) )
Theorem	eqoprab2b 5911	Equivalence of ordered pair abstraction subclass and biconditional. Compare eqopab2b 4264. (Contributed by Mario Carneiro, 4-Jan-2017.)
|- ( { <. <. x , y >. , z >. | ph } = { <. <. x , y >. , z >. | ps } <-> A. x A. y A. z ( ph <-> ps ) )
Theorem	mpoeq123 5912*	An equality theorem for the maps-to notation. (Contributed by Mario Carneiro, 16-Dec-2013.) (Revised by Mario Carneiro, 19-Mar-2015.)
|- ( ( A = D /\ A. x e. A ( B = E /\ A. y e. B C = F ) ) -> ( x e. A , y e. B |-> C ) = ( x e. D , y e. E |-> F ) )
Theorem	mpoeq12 5913*	An equality theorem for the maps-to notation. (Contributed by Mario Carneiro, 16-Dec-2013.)
|- ( ( A = C /\ B = D ) -> ( x e. A , y e. B |-> E ) = ( x e. C , y e. D |-> E ) )
Theorem	mpoeq123dva 5914*	An equality deduction for the maps-to notation. (Contributed by Mario Carneiro, 26-Jan-2017.)
|- ( ph -> A = D )   &    |- ( ( ph /\ x e. A ) -> B = E )   &    |- ( ( ph /\ ( x e. A /\ y e. B ) ) -> C = F )   =>    |- ( ph -> ( x e. A , y e. B |-> C ) = ( x e. D , y e. E |-> F ) )
Theorem	mpoeq123dv 5915*	An equality deduction for the maps-to notation. (Contributed by NM, 12-Sep-2011.)
|- ( ph -> A = D )   &    |- ( ph -> B = E )   &    |- ( ph -> C = F )   =>    |- ( ph -> ( x e. A , y e. B |-> C ) = ( x e. D , y e. E |-> F ) )
Theorem	mpoeq123i 5916	An equality inference for the maps-to notation. (Contributed by NM, 15-Jul-2013.)
|- A = D   &    |- B = E   &    |- C = F   =>    |- ( x e. A , y e. B |-> C ) = ( x e. D , y e. E |-> F )
Theorem	mpoeq3dva 5917*	Slightly more general equality inference for the maps-to notation. (Contributed by NM, 17-Oct-2013.)
|- ( ( ph /\ x e. A /\ y e. B ) -> C = D )   =>    |- ( ph -> ( x e. A , y e. B |-> C ) = ( x e. A , y e. B |-> D ) )
Theorem	mpoeq3ia 5918	An equality inference for the maps-to notation. (Contributed by Mario Carneiro, 16-Dec-2013.)
|- ( ( x e. A /\ y e. B ) -> C = D )   =>    |- ( x e. A , y e. B |-> C ) = ( x e. A , y e. B |-> D )
Theorem	mpoeq3dv 5919*	An equality deduction for the maps-to notation restricted to the value of the operation. (Contributed by SO, 16-Jul-2018.)
|- ( ph -> C = D )   =>    |- ( ph -> ( x e. A , y e. B |-> C ) = ( x e. A , y e. B |-> D ) )
Theorem	nfmpo1 5920	Bound-variable hypothesis builder for an operation in maps-to notation. (Contributed by NM, 27-Aug-2013.)
|- F/_ x ( x e. A , y e. B |-> C )
Theorem	nfmpo2 5921	Bound-variable hypothesis builder for an operation in maps-to notation. (Contributed by NM, 27-Aug-2013.)
|- F/_ y ( x e. A , y e. B |-> C )
Theorem	nfmpo 5922*	Bound-variable hypothesis builder for the maps-to notation. (Contributed by NM, 20-Feb-2013.)
|- F/_ z A   &    |- F/_ z B   &    |- F/_ z C   =>    |- F/_ z ( x e. A , y e. B |-> C )
Theorem	mpo0 5923	A mapping operation with empty domain. (Contributed by Stefan O'Rear, 29-Jan-2015.) (Revised by Mario Carneiro, 15-May-2015.)
|- ( x e. (/) , y e. B |-> C ) = (/)
Theorem	oprab4 5924*	Two ways to state the domain of an operation. (Contributed by FL, 24-Jan-2010.)
|- { <. <. x , y >. , z >. | ( <. x , y >. e. ( A X. B ) /\ ph ) } = { <. <. x , y >. , z >. | ( ( x e. A /\ y e. B ) /\ ph ) }
Theorem	cbvoprab1 5925*	Rule used to change first bound variable in an operation abstraction, using implicit substitution. (Contributed by NM, 20-Dec-2008.) (Revised by Mario Carneiro, 5-Dec-2016.)
|- F/ w ph   &    |- F/ x ps   &    |- ( x = w -> ( ph <-> ps ) )   =>    |- { <. <. x , y >. , z >. | ph } = { <. <. w , y >. , z >. | ps }
Theorem	cbvoprab2 5926*	Change the second bound variable in an operation abstraction. (Contributed by Jeff Madsen, 11-Jun-2010.) (Revised by Mario Carneiro, 11-Dec-2016.)
|- F/ w ph   &    |- F/ y ps   &    |- ( y = w -> ( ph <-> ps ) )   =>    |- { <. <. x , y >. , z >. | ph } = { <. <. x , w >. , z >. | ps }
Theorem	cbvoprab12 5927*	Rule used to change first two bound variables in an operation abstraction, using implicit substitution. (Contributed by NM, 21-Feb-2004.) (Proof shortened by Andrew Salmon, 22-Oct-2011.)
|- F/ w ph   &    |- F/ v ph   &    |- F/ x ps   &    |- F/ y ps   &    |- ( ( x = w /\ y = v ) -> ( ph <-> ps ) )   =>    |- { <. <. x , y >. , z >. | ph } = { <. <. w , v >. , z >. | ps }
Theorem	cbvoprab12v 5928*	Rule used to change first two bound variables in an operation abstraction, using implicit substitution. (Contributed by NM, 8-Oct-2004.)
|- ( ( x = w /\ y = v ) -> ( ph <-> ps ) )   =>    |- { <. <. x , y >. , z >. | ph } = { <. <. w , v >. , z >. | ps }
Theorem	cbvoprab3 5929*	Rule used to change the third bound variable in an operation abstraction, using implicit substitution. (Contributed by NM, 22-Aug-2013.)
|- F/ w ph   &    |- F/ z ps   &    |- ( z = w -> ( ph <-> ps ) )   =>    |- { <. <. x , y >. , z >. | ph } = { <. <. x , y >. , w >. | ps }
Theorem	cbvoprab3v 5930*	Rule used to change the third bound variable in an operation abstraction, using implicit substitution. (Contributed by NM, 8-Oct-2004.) (Revised by David Abernethy, 19-Jun-2012.)
|- ( z = w -> ( ph <-> ps ) )   =>    |- { <. <. x , y >. , z >. | ph } = { <. <. x , y >. , w >. | ps }
Theorem	cbvmpox 5931*	Rule to change the bound variable in a maps-to function, using implicit substitution. This version of cbvmpo 5932 allows B to be a function of x. (Contributed by NM, 29-Dec-2014.)
|- F/_ z B   &    |- F/_ x D   &    |- F/_ z C   &    |- F/_ w C   &    |- F/_ x E   &    |- F/_ y E   &    |- ( x = z -> B = D )   &    |- ( ( x = z /\ y = w ) -> C = E )   =>    |- ( x e. A , y e. B |-> C ) = ( z e. A , w e. D |-> E )
Theorem	cbvmpo 5932*	Rule to change the bound variable in a maps-to function, using implicit substitution. (Contributed by NM, 17-Dec-2013.)
|- F/_ z C   &    |- F/_ w C   &    |- F/_ x D   &    |- F/_ y D   &    |- ( ( x = z /\ y = w ) -> C = D )   =>    |- ( x e. A , y e. B |-> C ) = ( z e. A , w e. B |-> D )
Theorem	cbvmpov 5933*	Rule to change the bound variable in a maps-to function, using implicit substitution. With a longer proof analogous to cbvmpt 4084, some distinct variable requirements could be eliminated. (Contributed by NM, 11-Jun-2013.)
|- ( x = z -> C = E )   &    |- ( y = w -> E = D )   =>    |- ( x e. A , y e. B |-> C ) = ( z e. A , w e. B |-> D )
Theorem	dmoprab 5934*	The domain of an operation class abstraction. (Contributed by NM, 17-Mar-1995.) (Revised by David Abernethy, 19-Jun-2012.)
|- dom { <. <. x , y >. , z >. | ph } = { <. x , y >. | E. z ph }
Theorem	dmoprabss 5935*	The domain of an operation class abstraction. (Contributed by NM, 24-Aug-1995.)
|- dom { <. <. x , y >. , z >. | ( ( x e. A /\ y e. B ) /\ ph ) } C_ ( A X. B )
Theorem	rnoprab 5936*	The range of an operation class abstraction. (Contributed by NM, 30-Aug-2004.) (Revised by David Abernethy, 19-Apr-2013.)
|- ran { <. <. x , y >. , z >. | ph } = { z | E. x E. y ph }
Theorem	rnoprab2 5937*	The range of a restricted operation class abstraction. (Contributed by Scott Fenton, 21-Mar-2012.)
|- ran { <. <. x , y >. , z >. | ( ( x e. A /\ y e. B ) /\ ph ) } = { z | E. x e. A E. y e. B ph }
Theorem	reldmoprab 5938*	The domain of an operation class abstraction is a relation. (Contributed by NM, 17-Mar-1995.)
|- Rel dom { <. <. x , y >. , z >. | ph }
Theorem	oprabss 5939*	Structure of an operation class abstraction. (Contributed by NM, 28-Nov-2006.)
|- { <. <. x , y >. , z >. | ph } C_ ( ( _V X. _V ) X. _V )
Theorem	eloprabga 5940*	The law of concretion for operation class abstraction. Compare elopab 4243. (Contributed by NM, 14-Sep-1999.) (Unnecessary distinct variable restrictions were removed by David Abernethy, 19-Jun-2012.) (Revised by Mario Carneiro, 19-Dec-2013.)
|- ( ( x = A /\ y = B /\ z = C ) -> ( ph <-> ps ) )   =>    |- ( ( A e. V /\ B e. W /\ C e. X ) -> ( <. <. A , B >. , C >. e. { <. <. x , y >. , z >. | ph } <-> ps ) )
Theorem	eloprabg 5941*	The law of concretion for operation class abstraction. Compare elopab 4243. (Contributed by NM, 14-Sep-1999.) (Revised by David Abernethy, 19-Jun-2012.)
|- ( x = A -> ( ph <-> ps ) )   &    |- ( y = B -> ( ps <-> ch ) )   &    |- ( z = C -> ( ch <-> th ) )   =>    |- ( ( A e. V /\ B e. W /\ C e. X ) -> ( <. <. A , B >. , C >. e. { <. <. x , y >. , z >. | ph } <-> th ) )
Theorem	ssoprab2i 5942*	Inference of operation class abstraction subclass from implication. (Contributed by NM, 11-Nov-1995.) (Revised by David Abernethy, 19-Jun-2012.)
|- ( ph -> ps )   =>    |- { <. <. x , y >. , z >. | ph } C_ { <. <. x , y >. , z >. | ps }
Theorem	mpov 5943*	Operation with universal domain in maps-to notation. (Contributed by NM, 16-Aug-2013.)
|- ( x e. _V , y e. _V |-> C ) = { <. <. x , y >. , z >. | z = C }
Theorem	mpomptx 5944*	Express a two-argument function as a one-argument function, or vice-versa. In this version B ( x ) is not assumed to be constant w.r.t x. (Contributed by Mario Carneiro, 29-Dec-2014.)
|- ( z = <. x , y >. -> C = D )   =>    |- ( z e. U_ x e. A ( { x } X. B ) |-> C ) = ( x e. A , y e. B |-> D )
Theorem	mpompt 5945*	Express a two-argument function as a one-argument function, or vice-versa. (Contributed by Mario Carneiro, 17-Dec-2013.) (Revised by Mario Carneiro, 29-Dec-2014.)
|- ( z = <. x , y >. -> C = D )   =>    |- ( z e. ( A X. B ) |-> C ) = ( x e. A , y e. B |-> D )
Theorem	mpodifsnif 5946	A mapping with two arguments with the first argument from a difference set with a singleton and a conditional as result. (Contributed by AV, 13-Feb-2019.)
|- ( i e. ( A \ { X } ) , j e. B |-> if ( i = X , C , D ) ) = ( i e. ( A \ { X } ) , j e. B |-> D )
Theorem	mposnif 5947	A mapping with two arguments with the first argument from a singleton and a conditional as result. (Contributed by AV, 14-Feb-2019.)
|- ( i e. { X } , j e. B |-> if ( i = X , C , D ) ) = ( i e. { X } , j e. B |-> C )
Theorem	fconstmpo 5948*	Representation of a constant operation using the mapping operation. (Contributed by SO, 11-Jul-2018.)
|- ( ( A X. B ) X. { C } ) = ( x e. A , y e. B |-> C )
Theorem	resoprab 5949*	Restriction of an operation class abstraction. (Contributed by NM, 10-Feb-2007.)
|- ( { <. <. x , y >. , z >. | ph } |` ( A X. B ) ) = { <. <. x , y >. , z >. | ( ( x e. A /\ y e. B ) /\ ph ) }
Theorem	resoprab2 5950*	Restriction of an operator abstraction. (Contributed by Jeff Madsen, 2-Sep-2009.)
|- ( ( C C_ A /\ D C_ B ) -> ( { <. <. x , y >. , z >. | ( ( x e. A /\ y e. B ) /\ ph ) } |` ( C X. D ) ) = { <. <. x , y >. , z >. | ( ( x e. C /\ y e. D ) /\ ph ) } )
Theorem	resmpo 5951*	Restriction of the mapping operation. (Contributed by Mario Carneiro, 17-Dec-2013.)
|- ( ( C C_ A /\ D C_ B ) -> ( ( x e. A , y e. B |-> E ) |` ( C X. D ) ) = ( x e. C , y e. D |-> E ) )
Theorem	funoprabg 5952*	"At most one" is a sufficient condition for an operation class abstraction to be a function. (Contributed by NM, 28-Aug-2007.)
|- ( A. x A. y E* z ph -> Fun { <. <. x , y >. , z >. | ph } )
Theorem	funoprab 5953*	"At most one" is a sufficient condition for an operation class abstraction to be a function. (Contributed by NM, 17-Mar-1995.)
|- E* z ph   =>    |- Fun { <. <. x , y >. , z >. | ph }
Theorem	fnoprabg 5954*	Functionality and domain of an operation class abstraction. (Contributed by NM, 28-Aug-2007.)
|- ( A. x A. y ( ph -> E! z ps ) -> { <. <. x , y >. , z >. | ( ph /\ ps ) } Fn { <. x , y >. | ph } )
Theorem	mpofun 5955*	The maps-to notation for an operation is always a function. (Contributed by Scott Fenton, 21-Mar-2012.)
|- F = ( x e. A , y e. B |-> C )   =>    |- Fun F
Theorem	fnoprab 5956*	Functionality and domain of an operation class abstraction. (Contributed by NM, 15-May-1995.)
|- ( ph -> E! z ps )   =>    |- { <. <. x , y >. , z >. | ( ph /\ ps ) } Fn { <. x , y >. | ph }
Theorem	ffnov 5957*	An operation maps to a class to which all values belong. (Contributed by NM, 7-Feb-2004.)
|- ( F : ( A X. B ) --> C <-> ( F Fn ( A X. B ) /\ A. x e. A A. y e. B ( x F y ) e. C ) )
Theorem	fovcl 5958	Closure law for an operation. (Contributed by NM, 19-Apr-2007.)
|- F : ( R X. S ) --> C   =>    |- ( ( A e. R /\ B e. S ) -> ( A F B ) e. C )
Theorem	eqfnov 5959*	Equality of two operations is determined by their values. (Contributed by NM, 1-Sep-2005.)
|- ( ( F Fn ( A X. B ) /\ G Fn ( C X. D ) ) -> ( F = G <-> ( ( A X. B ) = ( C X. D ) /\ A. x e. A A. y e. B ( x F y ) = ( x G y ) ) ) )
Theorem	eqfnov2 5960*	Two operators with the same domain are equal iff their values at each point in the domain are equal. (Contributed by Jeff Madsen, 7-Jun-2010.)
|- ( ( F Fn ( A X. B ) /\ G Fn ( A X. B ) ) -> ( F = G <-> A. x e. A A. y e. B ( x F y ) = ( x G y ) ) )
Theorem	fnovim 5961*	Representation of a function in terms of its values. (Contributed by Jim Kingdon, 16-Jan-2019.)
|- ( F Fn ( A X. B ) -> F = ( x e. A , y e. B |-> ( x F y ) ) )
Theorem	mpo2eqb 5962*	Bidirectional equality theorem for a mapping abstraction. Equivalent to eqfnov2 5960. (Contributed by Mario Carneiro, 4-Jan-2017.)
|- ( A. x e. A A. y e. B C e. V -> ( ( x e. A , y e. B |-> C ) = ( x e. A , y e. B |-> D ) <-> A. x e. A A. y e. B C = D ) )
Theorem	rnmpo 5963*	The range of an operation given by the maps-to notation. (Contributed by FL, 20-Jun-2011.)
|- F = ( x e. A , y e. B |-> C )   =>    |- ran F = { z | E. x e. A E. y e. B z = C }
Theorem	reldmmpo 5964*	The domain of an operation defined by maps-to notation is a relation. (Contributed by Stefan O'Rear, 27-Nov-2014.)
|- F = ( x e. A , y e. B |-> C )   =>    |- Rel dom F
Theorem	elrnmpog 5965*	Membership in the range of an operation class abstraction. (Contributed by NM, 27-Aug-2007.) (Revised by Mario Carneiro, 31-Aug-2015.)
|- F = ( x e. A , y e. B |-> C )   =>    |- ( D e. V -> ( D e. ran F <-> E. x e. A E. y e. B D = C ) )
Theorem	elrnmpo 5966*	Membership in the range of an operation class abstraction. (Contributed by NM, 1-Aug-2004.) (Revised by Mario Carneiro, 31-Aug-2015.)
|- F = ( x e. A , y e. B |-> C )   &    |- C e. _V   =>    |- ( D e. ran F <-> E. x e. A E. y e. B D = C )
Theorem	ralrnmpo 5967*	A restricted quantifier over an image set. (Contributed by Mario Carneiro, 1-Sep-2015.)
|- F = ( x e. A , y e. B |-> C )   &    |- ( z = C -> ( ph <-> ps ) )   =>    |- ( A. x e. A A. y e. B C e. V -> ( A. z e. ran F ph <-> A. x e. A A. y e. B ps ) )
Theorem	rexrnmpo 5968*	A restricted quantifier over an image set. (Contributed by Mario Carneiro, 1-Sep-2015.)
|- F = ( x e. A , y e. B |-> C )   &    |- ( z = C -> ( ph <-> ps ) )   =>    |- ( A. x e. A A. y e. B C e. V -> ( E. z e. ran F ph <-> E. x e. A E. y e. B ps ) )
Theorem	ovid 5969*	The value of an operation class abstraction. (Contributed by NM, 16-May-1995.) (Revised by David Abernethy, 19-Jun-2012.)
|- ( ( x e. R /\ y e. S ) -> E! z ph )   &    |- F = { <. <. x , y >. , z >. | ( ( x e. R /\ y e. S ) /\ ph ) }   =>    |- ( ( x e. R /\ y e. S ) -> ( ( x F y ) = z <-> ph ) )
Theorem	ovidig 5970*	The value of an operation class abstraction. Compare ovidi 5971. The condition ( x e. R /\ y e. S ) is been removed. (Contributed by Mario Carneiro, 29-Dec-2014.)
|- E* z ph   &    |- F = { <. <. x , y >. , z >. | ph }   =>    |- ( ph -> ( x F y ) = z )
Theorem	ovidi 5971*	The value of an operation class abstraction (weak version). (Contributed by Mario Carneiro, 29-Dec-2014.)
|- ( ( x e. R /\ y e. S ) -> E* z ph )   &    |- F = { <. <. x , y >. , z >. | ( ( x e. R /\ y e. S ) /\ ph ) }   =>    |- ( ( x e. R /\ y e. S ) -> ( ph -> ( x F y ) = z ) )
Theorem	ov 5972*	The value of an operation class abstraction. (Contributed by NM, 16-May-1995.) (Revised by David Abernethy, 19-Jun-2012.)
|- C e. _V   &    |- ( x = A -> ( ph <-> ps ) )   &    |- ( y = B -> ( ps <-> ch ) )   &    |- ( z = C -> ( ch <-> th ) )   &    |- ( ( x e. R /\ y e. S ) -> E! z ph )   &    |- F = { <. <. x , y >. , z >. | ( ( x e. R /\ y e. S ) /\ ph ) }   =>    |- ( ( A e. R /\ B e. S ) -> ( ( A F B ) = C <-> th ) )
Theorem	ovigg 5973*	The value of an operation class abstraction. Compare ovig 5974. The condition ( x e. R /\ y e. S ) is been removed. (Contributed by FL, 24-Mar-2007.) (Revised by Mario Carneiro, 19-Dec-2013.)
|- ( ( x = A /\ y = B /\ z = C ) -> ( ph <-> ps ) )   &    |- E* z ph   &    |- F = { <. <. x , y >. , z >. | ph }   =>    |- ( ( A e. V /\ B e. W /\ C e. X ) -> ( ps -> ( A F B ) = C ) )
Theorem	ovig 5974*	The value of an operation class abstraction (weak version). (Unnecessary distinct variable restrictions were removed by David Abernethy, 19-Jun-2012.) (Contributed by NM, 14-Sep-1999.) (Revised by Mario Carneiro, 19-Dec-2013.)
|- ( ( x = A /\ y = B /\ z = C ) -> ( ph <-> ps ) )   &    |- ( ( x e. R /\ y e. S ) -> E* z ph )   &    |- F = { <. <. x , y >. , z >. | ( ( x e. R /\ y e. S ) /\ ph ) }   =>    |- ( ( A e. R /\ B e. S /\ C e. D ) -> ( ps -> ( A F B ) = C ) )
Theorem	ovmpt4g 5975*	Value of a function given by the maps-to notation. (This is the operation analog of fvmpt2 5579.) (Contributed by NM, 21-Feb-2004.) (Revised by Mario Carneiro, 1-Sep-2015.)
|- F = ( x e. A , y e. B |-> C )   =>    |- ( ( x e. A /\ y e. B /\ C e. V ) -> ( x F y ) = C )
Theorem	ovmpos 5976*	Value of a function given by the maps-to notation, expressed using explicit substitution. (Contributed by Mario Carneiro, 30-Apr-2015.)
|- F = ( x e. C , y e. D |-> R )   =>    |- ( ( A e. C /\ B e. D /\ [_ A / x ]_ [_ B / y ]_ R e. V ) -> ( A F B ) = [_ A / x ]_ [_ B / y ]_ R )
Theorem	ov2gf 5977*	The value of an operation class abstraction. A version of ovmpog 5987 using bound-variable hypotheses. (Contributed by NM, 17-Aug-2006.) (Revised by Mario Carneiro, 19-Dec-2013.)
|- F/_ x A   &    |- F/_ y A   &    |- F/_ y B   &    |- F/_ x G   &    |- F/_ y S   &    |- ( x = A -> R = G )   &    |- ( y = B -> G = S )   &    |- F = ( x e. C , y e. D |-> R )   =>    |- ( ( A e. C /\ B e. D /\ S e. H ) -> ( A F B ) = S )
Theorem	ovmpodxf 5978*	Value of an operation given by a maps-to rule, deduction form. (Contributed by Mario Carneiro, 29-Dec-2014.)
|- ( ph -> F = ( x e. C , y e. D |-> R ) )   &    |- ( ( ph /\ ( x = A /\ y = B ) ) -> R = S )   &    |- ( ( ph /\ x = A ) -> D = L )   &    |- ( ph -> A e. C )   &    |- ( ph -> B e. L )   &    |- ( ph -> S e. X )   &    |- F/ x ph   &    |- F/ y ph   &    |- F/_ y A   &    |- F/_ x B   &    |- F/_ x S   &    |- F/_ y S   =>    |- ( ph -> ( A F B ) = S )
Theorem	ovmpodx 5979*	Value of an operation given by a maps-to rule, deduction form. (Contributed by Mario Carneiro, 29-Dec-2014.)
|- ( ph -> F = ( x e. C , y e. D |-> R ) )   &    |- ( ( ph /\ ( x = A /\ y = B ) ) -> R = S )   &    |- ( ( ph /\ x = A ) -> D = L )   &    |- ( ph -> A e. C )   &    |- ( ph -> B e. L )   &    |- ( ph -> S e. X )   =>    |- ( ph -> ( A F B ) = S )
Theorem	ovmpod 5980*	Value of an operation given by a maps-to rule, deduction form. (Contributed by Mario Carneiro, 7-Dec-2014.)
|- ( ph -> F = ( x e. C , y e. D |-> R ) )   &    |- ( ( ph /\ ( x = A /\ y = B ) ) -> R = S )   &    |- ( ph -> A e. C )   &    |- ( ph -> B e. D )   &    |- ( ph -> S e. X )   =>    |- ( ph -> ( A F B ) = S )
Theorem	ovmpox 5981*	The value of an operation class abstraction. Variant of ovmpoga 5982 which does not require D and x to be distinct. (Contributed by Jeff Madsen, 10-Jun-2010.) (Revised by Mario Carneiro, 20-Dec-2013.)
|- ( ( x = A /\ y = B ) -> R = S )   &    |- ( x = A -> D = L )   &    |- F = ( x e. C , y e. D |-> R )   =>    |- ( ( A e. C /\ B e. L /\ S e. H ) -> ( A F B ) = S )
Theorem	ovmpoga 5982*	Value of an operation given by a maps-to rule. (Contributed by Mario Carneiro, 19-Dec-2013.)
|- ( ( x = A /\ y = B ) -> R = S )   &    |- F = ( x e. C , y e. D |-> R )   =>    |- ( ( A e. C /\ B e. D /\ S e. H ) -> ( A F B ) = S )
Theorem	ovmpoa 5983*	Value of an operation given by a maps-to rule. (Contributed by NM, 19-Dec-2013.)
|- ( ( x = A /\ y = B ) -> R = S )   &    |- F = ( x e. C , y e. D |-> R )   &    |- S e. _V   =>    |- ( ( A e. C /\ B e. D ) -> ( A F B ) = S )
Theorem	ovmpodf 5984*	Alternate deduction version of ovmpo 5988, suitable for iteration. (Contributed by Mario Carneiro, 7-Jan-2017.)
|- ( ph -> A e. C )   &    |- ( ( ph /\ x = A ) -> B e. D )   &    |- ( ( ph /\ ( x = A /\ y = B ) ) -> R e. V )   &    |- ( ( ph /\ ( x = A /\ y = B ) ) -> ( ( A F B ) = R -> ps ) )   &    |- F/_ x F   &    |- F/ x ps   &    |- F/_ y F   &    |- F/ y ps   =>    |- ( ph -> ( F = ( x e. C , y e. D |-> R ) -> ps ) )
Theorem	ovmpodv 5985*	Alternate deduction version of ovmpo 5988, suitable for iteration. (Contributed by Mario Carneiro, 7-Jan-2017.)
|- ( ph -> A e. C )   &    |- ( ( ph /\ x = A ) -> B e. D )   &    |- ( ( ph /\ ( x = A /\ y = B ) ) -> R e. V )   &    |- ( ( ph /\ ( x = A /\ y = B ) ) -> ( ( A F B ) = R -> ps ) )   =>    |- ( ph -> ( F = ( x e. C , y e. D |-> R ) -> ps ) )
Theorem	ovmpodv2 5986*	Alternate deduction version of ovmpo 5988, suitable for iteration. (Contributed by Mario Carneiro, 7-Jan-2017.)
|- ( ph -> A e. C )   &    |- ( ( ph /\ x = A ) -> B e. D )   &    |- ( ( ph /\ ( x = A /\ y = B ) ) -> R e. V )   &    |- ( ( ph /\ ( x = A /\ y = B ) ) -> R = S )   =>    |- ( ph -> ( F = ( x e. C , y e. D |-> R ) -> ( A F B ) = S ) )
Theorem	ovmpog 5987*	Value of an operation given by a maps-to rule. Special case. (Contributed by NM, 14-Sep-1999.) (Revised by David Abernethy, 19-Jun-2012.)
|- ( x = A -> R = G )   &    |- ( y = B -> G = S )   &    |- F = ( x e. C , y e. D |-> R )   =>    |- ( ( A e. C /\ B e. D /\ S e. H ) -> ( A F B ) = S )
Theorem	ovmpo 5988*	Value of an operation given by a maps-to rule. Special case. (Contributed by NM, 16-May-1995.) (Revised by David Abernethy, 19-Jun-2012.)
|- ( x = A -> R = G )   &    |- ( y = B -> G = S )   &    |- F = ( x e. C , y e. D |-> R )   &    |- S e. _V   =>    |- ( ( A e. C /\ B e. D ) -> ( A F B ) = S )
Theorem	ovi3 5989*	The value of an operation class abstraction. Special case. (Contributed by NM, 28-May-1995.) (Revised by Mario Carneiro, 29-Dec-2014.)
|- ( ( ( A e. H /\ B e. H ) /\ ( C e. H /\ D e. H ) ) -> S e. ( H X. H ) )   &    |- ( ( ( w = A /\ v = B ) /\ ( u = C /\ f = D ) ) -> R = S )   &    |- F = { <. <. x , y >. , z >. | ( ( x e. ( H X. H ) /\ y e. ( H X. H ) ) /\ E. w E. v E. u E. f ( ( x = <. w , v >. /\ y = <. u , f >. ) /\ z = R ) ) }   =>    |- ( ( ( A e. H /\ B e. H ) /\ ( C e. H /\ D e. H ) ) -> ( <. A , B >. F <. C , D >. ) = S )
Theorem	ov6g 5990*	The value of an operation class abstraction. Special case. (Contributed by NM, 13-Nov-2006.)
|- ( <. x , y >. = <. A , B >. -> R = S )   &    |- F = { <. <. x , y >. , z >. | ( <. x , y >. e. C /\ z = R ) }   =>    |- ( ( ( A e. G /\ B e. H /\ <. A , B >. e. C ) /\ S e. J ) -> ( A F B ) = S )
Theorem	ovg 5991*	The value of an operation class abstraction. (Contributed by Jeff Madsen, 10-Jun-2010.)
|- ( x = A -> ( ph <-> ps ) )   &    |- ( y = B -> ( ps <-> ch ) )   &    |- ( z = C -> ( ch <-> th ) )   &    |- ( ( ta /\ ( x e. R /\ y e. S ) ) -> E! z ph )   &    |- F = { <. <. x , y >. , z >. | ( ( x e. R /\ y e. S ) /\ ph ) }   =>    |- ( ( ta /\ ( A e. R /\ B e. S /\ C e. D ) ) -> ( ( A F B ) = C <-> th ) )
Theorem	ovres 5992	The value of a restricted operation. (Contributed by FL, 10-Nov-2006.)
|- ( ( A e. C /\ B e. D ) -> ( A ( F |` ( C X. D ) ) B ) = ( A F B ) )
Theorem	ovresd 5993	Lemma for converting metric theorems to metric space theorems. (Contributed by Mario Carneiro, 2-Oct-2015.)
|- ( ph -> A e. X )   &    |- ( ph -> B e. X )   =>    |- ( ph -> ( A ( D |` ( X X. X ) ) B ) = ( A D B ) )
Theorem	oprssov 5994	The value of a member of the domain of a subclass of an operation. (Contributed by NM, 23-Aug-2007.)
|- ( ( ( Fun F /\ G Fn ( C X. D ) /\ G C_ F ) /\ ( A e. C /\ B e. D ) ) -> ( A F B ) = ( A G B ) )
Theorem	fovrn 5995	An operation's value belongs to its codomain. (Contributed by NM, 27-Aug-2006.)
|- ( ( F : ( R X. S ) --> C /\ A e. R /\ B e. S ) -> ( A F B ) e. C )
Theorem	fovrnda 5996	An operation's value belongs to its codomain. (Contributed by Mario Carneiro, 29-Dec-2016.)
|- ( ph -> F : ( R X. S ) --> C )   =>    |- ( ( ph /\ ( A e. R /\ B e. S ) ) -> ( A F B ) e. C )
Theorem	fovrnd 5997	An operation's value belongs to its codomain. (Contributed by Mario Carneiro, 29-Dec-2016.)
|- ( ph -> F : ( R X. S ) --> C )   &    |- ( ph -> A e. R )   &    |- ( ph -> B e. S )   =>    |- ( ph -> ( A F B ) e. C )
Theorem	fnrnov 5998*	The range of an operation expressed as a collection of the operation's values. (Contributed by NM, 29-Oct-2006.)
|- ( F Fn ( A X. B ) -> ran F = { z | E. x e. A E. y e. B z = ( x F y ) } )
Theorem	foov 5999*	An onto mapping of an operation expressed in terms of operation values. (Contributed by NM, 29-Oct-2006.)
|- ( F : ( A X. B ) -onto-> C <-> ( F : ( A X. B ) --> C /\ A. z e. C E. x e. A E. y e. B z = ( x F y ) ) )
Theorem	fnovrn 6000	An operation's value belongs to its range. (Contributed by NM, 10-Feb-2007.)
|- ( ( F Fn ( A X. B ) /\ C e. A /\ D e. B ) -> ( C F D ) e. ran F )