SSL homwdata.gi
Sprache: unbekannt
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#############################################################################
##
## orb package
## homwdata.gi
## Juergen Mueller
## Max Neunhoeffer
## Felix Noeske
##
## Copyright 2005-2008 by the authors.
## This file is free software, see license information at the end.
##
## Things for our group homomorphisms with data.
##
#############################################################################
# Eventually this should all go into the main GAP library.
InstallGlobalFunction( GroupHomByFuncWithData,
function( arg )
local data,h;
# Say Group if arg[2] is a list of generators:
if not(IsGroup(arg[2])) then
arg[2] := Group(arg[2]);
fi;
data := arg[Length(arg)];
Unbind(arg[Length(arg)]);
h := CallFuncList(GroupHomomorphismByFunction,arg);
h!.data := data;
SetFilterObj(h, IsMappingByFunctionWithData);
return h;
end);
InstallMethod( ImageElm, "for a mapping by function with data and an object",
[ IsMappingByFunctionRep and IsMappingByFunctionWithData, IsObject ],
function(h,o)
return h!.fun(h!.data,o);
end);
InstallMethod( ImagesElm, "for a mapping by function with data and an object",
[ IsMappingByFunctionRep and IsMappingByFunctionWithData, IsObject ],
function(h,o)
return [h!.fun(h!.data,o)];
end);
InstallMethod( ImagesRepresentative,
"for a mapping by function with data and an object",
[ IsMappingByFunctionRep and IsMappingByFunctionWithData, IsObject ],
function(h,o)
return h!.fun(h!.data,o);
end);
InstallMethod( PreImageElm, "for a mapping by function with data, and an obj",
[ IsMappingByFunctionWithInverseRep and IsMappingByFunctionWithData,
IsObject ], 0,
function (h,o)
return h!.invFun(h!.data,o);
end );
InstallMethod( PreImagesElmNC,
"for a mapping by function with data, and an obj",
[ IsMappingByFunctionWithInverseRep and IsMappingByFunctionWithData,
IsObject ], 0,
function (h,o)
return [h!.invFun(h!.data,o)];
end );
InstallMethod( PreImagesRepresentativeNC,
"for a mapping by function with data, and an obj",
[ IsMappingByFunctionWithInverseRep and IsMappingByFunctionWithData,
IsObject ], 0,
function (h,o)
return h!.invFun(h!.data,o);
end );
InstallMethod( PreImagesRepresentativeNC,
"for a mapping by function with invmap with data, and an obj",
[ IsMappingByFunctionRep and IsMappingByFunctionWithData,
IsObject ], 0,
function (h,o)
return h!.prefun(h!.data,o);
end );
##
## This program is free software: you can redistribute it and/or modify
## it under the terms of the GNU General Public License as published by
## the Free Software Foundation, either version 3 of the License, or
## (at your option) any later version.
##
## This program is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
## GNU General Public License for more details.
##
## You should have received a copy of the GNU General Public License
## along with this program. If not, see <https://www.gnu.org/licenses/>.
##
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2026-03-28
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