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#A  Endomorphisms ( <D> )
##
## returns a list of all endomorphisms of the domain <D>.
##

DeclareAttribute ( "Endomorphisms", IsDomain);

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#A  Automorphisms ( <D> )
##
## returns a list of all Automorphisms of the domain <D>.
##

DeclareAttribute ( "Automorphisms", IsDomain );

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##
#A  InnerAutomorphisms ( <G> )
##
## returns a list of all InnerAutomorphisms of the group <G>.
##

DeclareAttribute ( "InnerAutomorphisms", IsGroup);

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#M  AdditiveGeneratorsForHomomorphisms( <G>, <H> )
##
## returns a list of "elementary" homomorphisms from the group <G> to
## the abelian group <H>, such that all homomorphisms from <G> to <H> can
## be obtained as sums of these
##
DeclareOperation( "AdditiveGeneratorsForHomomorphisms", [IsGroup, IsGroup and IsAbelian] );

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##
#M  Homomorphisms( <G>, <H> )
##
## returns a list of all homomorphisms from the group <G> into the group <H>
##
DeclareOperation( "Homomorphisms", [IsGroup, IsGroup] );

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##
#M  AdditiveGeneratorsForEndomorphisms( <G> )
##
## returns a list of "elementary" endomorphisms of the abelian group <G>
## such that all endomorphisms of <G> can be obtained as sums of these
##
DeclareOperation( "AdditiveGeneratorsForEndomorphisms", [IsGroup and IsAbelian] );

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##
#M  NearRingGeneratorsForHomomorphisms( <G>, <H> )
##
##  returns a list of homomorphisms h from G to H and a list
##  of the respective groups of automorphisms A of H which stabilize h
##  i.e., h=h*a for a in A.
##  Each homomorphism from G to H has a unique representation h*c for some
##  h and c some coset representative for A*c in Aut( H ).
##
DeclareOperation( "NearRingGeneratorsForHomomorphisms", [IsGroup, IsGroup] );

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