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# SPDX-License-Identifier: GPL-2.0-or-later
# RingsForHomalg: Dictionaries of external rings
#
# Implementations
#
## Implementations for the external rings provided by the ring packages
## of the GAP implementation of homalg.
####################################
#
# global variables:
#
####################################
BindGlobal( "CommonHomalgTableForGAPHomalgTools",
rec(
Zero := HomalgExternalRingElement( R -> homalgSendBlocking( [ "Zero( ", R, " )" ], "Zero" ), "GAP", IsZero ),
One := HomalgExternalRingElement( R -> homalgSendBlocking( [ "One( ", R, " )" ], "One" ), "GAP", IsOne ),
MinusOne := HomalgExternalRingElement( R -> homalgSendBlocking( [ "MinusOne( ", R, " )" ], "MinusOne" ), "GAP", IsMinusOne ),
RingElement := R -> r -> homalgSendBlocking( [ "One(", R, ")*(", r, ")" ], "define" ),
IsZero := r -> homalgSendBlocking( [ "IsZero(", r, ")" ] , "need_output", "IsZero" ) = "true",
IsOne := r -> homalgSendBlocking( [ "IsOne(", r, ")" ] , "need_output", "IsOne" ) = "true",
Minus :=
function( a, b )
return homalgSendBlocking( [ a, "-(", b, ")" ], "Minus" );
end,
DivideByUnit :=
function( a, u )
return homalgSendBlocking( [ "(", a, ")/(", u, ")" ], "DivideByUnit" );
end,
IsUnit :=
function( R, u )
return homalgSendBlocking( [ "IsUnit(", R, u, ")" ], "need_output", "IsUnit" ) = "true";
end,
Sum :=
function( a, b )
return homalgSendBlocking( [ a, "+(", b, ")" ], "Sum" );
end,
Product :=
function( a, b )
return homalgSendBlocking( [ "(", a, ")*(", b, ")" ], "Product" );
end,
CancelGcd :=
function( a, b )
local R, a_g, b_g;
R := HomalgRing( a );
## Cancel is declared in the package LocalizeRingForHomalg, so we cannot call it directly
## unless LocalizeRingForHomalg has been loaded in external GAP
homalgSendBlocking( [ "ccd := homalgTable(", R, ")!.CancelGcd(", a, b, ")" ], "need_command", "CancelGcd" );
a_g := homalgSendBlocking( [ "ccd[1]" ], R, "CancelGcd" );
b_g := homalgSendBlocking( [ "ccd[2]" ], R, "CancelGcd" );
a_g := HomalgExternalRingElement( a_g, R );
b_g := HomalgExternalRingElement( b_g, R );
return [ a_g, b_g ];
end,
ShallowCopy := C -> homalgSendBlocking( [ "ShallowCopy(", C, ")" ], "CopyMatrix" ),
CopyMatrix :=
function( C, R )
return homalgSendBlocking( [ "HomalgMatrix(", C, R, ")" ], "CopyMatrix" );
end,
ZeroMatrix :=
function( C )
return homalgSendBlocking( [ "HomalgZeroMatrix(", NumberRows( C ), NumberColumns( C ), HomalgRing( C ), ")" ], "ZeroMatrix" );
end,
IdentityMatrix :=
function( C )
return homalgSendBlocking( [ "HomalgIdentityMatrix(", NumberRows( C ), HomalgRing( C ), ")" ], "IdentityMatrix" );
end,
InitialMatrix :=
function( C )
return homalgSendBlocking( [ "HomalgInitialMatrix(", NumberRows( C ), NumberColumns( C ), HomalgRing( C ), ")" ], "ZeroMatrix" );
end,
InitialIdentityMatrix :=
function( C )
return homalgSendBlocking( [ "HomalgInitialIdentityMatrix(", NumberRows( C ), HomalgRing( C ), ")" ], "IdentityMatrix" );
end,
AreEqualMatrices :=
function( A, B )
return homalgSendBlocking( [ A, "=", B ] , "need_output", "AreEqualMatrices" ) = "true";
end,
Involution := M -> homalgSendBlocking( [ "Involution(", M, ")" ], "Involution" ),
TransposedMatrix := M -> homalgSendBlocking( [ "TransposedMatrix(", M, ")" ], "TransposedMatrix" ),
CertainRows :=
function( M, plist )
return homalgSendBlocking( [ "CertainRows(", M, plist, ")" ], "CertainRows" );
end,
CertainColumns :=
function( M, plist )
return homalgSendBlocking( [ "CertainColumns(", M, plist, ")" ], "CertainColumns" );
end,
UnionOfRows :=
function( L )
local f;
f := Concatenation( [ "UnionOfRows([" ], L, [ "])" ] );
return homalgSendBlocking( f, "UnionOfRows" );
end,
UnionOfColumns :=
function( L )
local f;
f := Concatenation( [ "UnionOfColumns([" ], L, [ "])" ] );
return homalgSendBlocking( f, "UnionOfColumns" );
end,
DiagMat :=
function( e )
local f;
f := Concatenation( [ "DiagMat([" ], e, [ "])" ] );
return homalgSendBlocking( f, "DiagMat" );
end,
KroneckerMat :=
function( A, B )
return homalgSendBlocking( [ "KroneckerMat(", A, B, ")" ], "KroneckerMat" );
end,
DualKroneckerMat :=
function( A, B )
return homalgSendBlocking( [ "DualKroneckerMat(", A, B, ")" ], "DualKroneckerMat" );
end,
MulMat :=
function( a, A )
return homalgSendBlocking( [ "(", a, ")*", A ], "MulMat" );
end,
MulMatRight :=
function( A, a )
return homalgSendBlocking( [ A, "*(", a, ")" ], "MulMatRight" );
end,
AddMat :=
function( A, B )
return homalgSendBlocking( [ A, "+", B ], "AddMat" );
end,
SubMat :=
function( A, B )
return homalgSendBlocking( [ A, "-", B ], "SubMat" );
end,
Compose :=
function( A, B )
return homalgSendBlocking( [ A, "*", B ], "Compose" );
end,
NumberRows :=
function( C )
return StringToInt( homalgSendBlocking( [ "NumberRows(", C, ")" ], "need_output", "NumberRows" ) );
end,
NumberColumns :=
function( C )
return StringToInt( homalgSendBlocking( [ "NumberColumns(", C, ")" ], "need_output", "NumberColumns" ) );
end,
Determinant :=
function( C )
return homalgSendBlocking( [ "Determinant( ", C, " )" ], "need_output", "Determinant" );
end,
IsZeroMatrix :=
function( M )
return homalgSendBlocking( [ "IsZero(", M, ")" ] , "need_output", "IsZeroMatrix" ) = "true";
end,
IsIdentityMatrix :=
function( M )
return homalgSendBlocking( [ "IsOne(", M, ")" ] , "need_output", "IsIdentityMatrix" ) = "true";
end,
IsDiagonalMatrix :=
function( M )
return homalgSendBlocking( [ "IsDiagonalMatrix(", M, ")" ] , "need_output", "IsDiagonalMatrix" ) = "true";
end,
ZeroRows :=
function( C )
local list_string;
list_string := homalgSendBlocking( [ "ZeroRows(", C, ")" ], "need_output", "ZeroRows" );
return EvalString( list_string );
end,
ZeroColumns :=
function( C )
local list_string;
list_string := homalgSendBlocking( [ "ZeroColumns(", C, ")" ], "need_output", "ZeroColumns" );
return EvalString( list_string );
end,
GetColumnIndependentUnitPositions :=
function( M, pos_list )
return StringToDoubleIntList( homalgSendBlocking( [ "GetColumnIndependentUnitPositions(", M, pos_list, ")" ], "need_output", "GetColumnIndependentUnitPositions" ) );
end,
GetRowIndependentUnitPositions :=
function( M, pos_list )
return StringToDoubleIntList( homalgSendBlocking( [ "GetRowIndependentUnitPositions(", M, pos_list, ")" ], "need_output", "GetRowIndependentUnitPositions" ) );
end,
GetUnitPosition :=
function( M, pos_list )
local list_string;
list_string := homalgSendBlocking( [ "GetUnitPosition(", M, pos_list, ")" ], "need_output", "GetUnitPosition" );
if list_string = "fail" then
return fail;
else
return EvalString( list_string );
fi;
end,
PositionOfFirstNonZeroEntryPerRow :=
function( M )
local L;
L := homalgSendBlocking( [ "PositionOfFirstNonZeroEntryPerRow( ", M, " )" ], "need_output", "PositionOfFirstNonZeroEntryPerRow" );
L := StringToIntList( L );
if Length( L ) = 1 then
return ListWithIdenticalEntries( NumberRows( M ), L[1] );
fi;
return L;
end,
PositionOfFirstNonZeroEntryPerColumn :=
function( M )
local L;
L := homalgSendBlocking( [ "PositionOfFirstNonZeroEntryPerColumn( ", M, " )" ], "need_output", "PositionOfFirstNonZeroEntryPerColumn" );
L := StringToIntList( L );
if Length( L ) = 1 then
return ListWithIdenticalEntries( NumberColumns( M ), L[1] );
fi;
return L;
end,
DivideEntryByUnit :=
function( M, i, j, u )
homalgSendBlocking( [ "DivideEntryByUnit(", M, i, j, u, ")" ], "need_command", "DivideEntryByUnit" );
end,
DivideRowByUnit :=
function( M, i, u, j )
homalgSendBlocking( [ "DivideRowByUnit(", M, i, u, j, ")" ], "need_command", "DivideRowByUnit" );
end,
DivideColumnByUnit :=
function( M, j, u, i )
homalgSendBlocking( [ "DivideColumnByUnit(", M, j, u, i, ")" ], "need_command", "DivideColumnByUnit" );
end,
CopyRowToIdentityMatrix :=
function( M, i, L, j )
homalgSendBlocking( [ "CopyRowToIdentityMatrix(", M, i, ",[", L[1], ",", L[2], "],", j, ")" ], "need_command", "CopyRowToIdentityMatrix" );
end,
CopyColumnToIdentityMatrix :=
function( M, j, L, i )
homalgSendBlocking( [ "CopyColumnToIdentityMatrix(", M, j, ",[", L[1], ",", L[2], "],", i, ")" ], "need_command", "CopyColumnToIdentityMatrix" );
end,
SetColumnToZero :=
function( M, i, j )
homalgSendBlocking( [ "SetColumnToZero(", M, i, j, ")" ], "need_command", "SetColumnToZero" );
end,
GetCleanRowsPositions :=
function( M, clean_columns )
local list_string;
list_string := homalgSendBlocking( [ "GetCleanRowsPositions(", M, clean_columns, ")" ], "need_output", "GetCleanRowsPositions" );
return EvalString( list_string );
end,
ConvertRowToMatrix :=
function( M, r, c )
return homalgSendBlocking( [ "ConvertRowToMatrix(", M, r, c, ")" ], "ConvertRowToMatrix" );
end,
ConvertColumnToMatrix :=
function( M, r, c )
return homalgSendBlocking( [ "ConvertColumnToMatrix(", M, r, c, ")" ], "ConvertColumnToMatrix" );
end,
ConvertMatrixToRow :=
function( M )
return homalgSendBlocking( [ "ConvertMatrixToRow(", M, ")" ], "ConvertMatrixToRow" );
end,
ConvertMatrixToColumn :=
function( M )
return homalgSendBlocking( [ "ConvertMatrixToColumn(", M, ")" ], "ConvertMatrixToColumn" );
end,
ConvertRowToTransposedMatrix :=
function( M, r, c )
return homalgSendBlocking( [ "ConvertRowToTransposedMatrix(", M, r, c, ")" ], "ConvertRowToMatrix" );
end,
ConvertColumnToTransposedMatrix :=
function( M, r, c )
return homalgSendBlocking( [ "ConvertColumnToTransposedMatrix(", M, r, c, ")" ], "ConvertColumnToMatrix" );
end,
ConvertTransposedMatrixToRow :=
function( M )
return homalgSendBlocking( [ "ConvertTransposedMatrixToRow(", M, ")" ], "ConvertMatrixToRow" );
end,
ConvertTransposedMatrixToColumn :=
function( M )
return homalgSendBlocking( [ "ConvertTransposedMatrixToColumn(", M, ")" ], "ConvertMatrixToColumn" );
end,
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