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###############################################################################
##
#F LatexInput.gi The SymbCompCC package Dörte Feichtenschlager
##
###############################################################################
##
#M LatexInputPPPPcpGroups( file, grp_pres )
##
## Input: a string file, which is a file-name, and p-power-poly-pcp-groups
## grp_pres
##
## Output: the function writes the presentations for grp_pres to file in latex
## code in short form
##
InstallMethod( LatexInputPPPPcpGroups,[IsString,IsPPPPcpGroups],0,
function( file, grp_pres )
local p, n, d, m, rel, expo, expo_vec, name, i, j, k, One1, Zero0,
first_rel_done;
## Initialize
p := grp_pres!.prime;
n := grp_pres!.n;
d := grp_pres!.d;
m := grp_pres!.m;
rel := grp_pres!.rel;
expo := grp_pres!.expo;
expo_vec := grp_pres!.expo_vec;
name := grp_pres!.name;
One1 := Int2PPowerPoly( p, 1 );
Zero0 := Int2PPowerPoly( p, 0 );
## Start the file
PrintTo( file, "\\begin{eqnarray*}\n" );
AppendTo( file, name, " = \\langle \\; " );
## catch trivial group
if n = 0 and d = 0 and m = 0 then
AppendTo( file, "\\rangle\n\\end{eqnarray*}" );
else
## print the g's
if n > 0 then
AppendTo( file, "g_1" );
if n = 2 then
AppendTo( file, ",g_2" );
elif n > 2 then
AppendTo( file, ", \\ldots, g_", n );
fi;
fi;
## print the t's
if d > 0 then
if n > 0 then
AppendTo( file, "," );
fi;
AppendTo( file, "t_1" );
if d = 2 then
AppendTo( file, ",t_2" );
elif d > 2 then
AppendTo( file, ", \\ldots, t_", d );
fi;
fi;
## print the c's
if m > 0 then
if n > 0 or d > 0 then
AppendTo( file, "," );
fi;
AppendTo( file, "c_1" );
if m = 2 then
AppendTo( file, ",c_2" );
elif m > 2 then
AppendTo( file, ", \\ldots, c_", m );
fi;
fi;
first_rel_done := false;
## middle slash and relations
AppendTo( file, "& | &" );
for i in [1..n+m+d] do
## conjugating relations
for j in [1..i-1] do
## conjugating g -> only conjugating with lower g's
if i <= n then
if rel[i][j] <> [[i,1]] then
if first_rel_done then
AppendTo( file, ",\\\\\n & & " );
else first_rel_done := true;
fi;
AppendTo( file, "g_", i, "\^{g_", j, "} = " );
for k in [1..Length( rel[i][j] )] do
if rel[i][j][k][1] <= n then
AppendTo( file, "g_", rel[i][j][k][1] );
if rel[i][j][k][2] <> 1 then
AppendTo( file, "^{", rel[i][j][k][2], "}" );
fi;
elif rel[i][j][k][1] <= n+d then
AppendTo( file, "t_", rel[i][j][k][1]-n );
if not PPP_Equal( rel[i][j][k][2], One1 ) then
AppendTo( file, "^{" );
AppendPPP( file, rel[i][j][k][2] );
AppendTo( file, "}" );
fi;
else AppendTo( file, "c_", rel[i][j][k][1]-n-d );
if not PPP_Equal( rel[i][j][k][2], One1 ) then
AppendTo( file, "^{" );
AppendPPP( file, rel[i][j][k][2] );
AppendTo( file, "}" );
fi;
fi;
od;
fi;
## conjugating t's with g's and lower t's
elif i <= n+d then
if rel[i][j][1][1] <> i and not PPP_Equal( rel[i][j][1][2], One1 ) then
if first_rel_done then
AppendTo( file, ",\\\\\n & & " );
else first_rel_done := true;
fi;
AppendTo( file, "t_", i-n );
if j <= n then
AppendTo( file, "\^{g_", j, "} = " );
else AppendTo( file, "\^{t_", j-n, "} = " );
fi;
for k in [1..Length( rel[i][j] )] do
if rel[i][j][k][1] <= n then
AppendTo( file, "g_", rel[i][j][k][1] );
if rel[i][j][k][2] <> 1 then
AppendTo( file, "^{", rel[i][j][k][2], "}" );
fi;
elif rel[i][j][k][1] <= n+d then
AppendTo( file, "t_", rel[i][j][k][1]-n );
if not PPP_Equal( rel[i][j][k][2], One1 ) then
AppendTo( file, "^{" );
AppendPPP( file, rel[i][j][k][2] );
AppendTo( file, "}" );
fi;
else AppendTo( file, "c_", rel[i][j][k][1]-n-d );
if not PPP_Equal( rel[i][j][k][2], One1 ) then
AppendTo( file, "^{" );
AppendPPP( file, rel[i][j][k][2] );
AppendTo( file, "}" );
fi;
fi;
od;
fi;
## c's are central thus no conjugating relation
fi;
od;
## power relations
## g's powers
if i <= n then
if first_rel_done then
AppendTo( file, ",\\\\\n & & " );
else first_rel_done := true;
fi;
AppendTo( file, "g_", i, "^{", p, "} = " );
if rel[i][i] = [[i,0]] then
AppendTo( file, "1" );
else
for k in [1..Length( rel[i][i] )] do
if rel[i][i][k][1] <= n then
AppendTo( file, "g_", rel[i][i][k][1] );
if rel[i][i][k][2] <> 1 then
AppendTo( file, "^{", rel[i][i][k][2], "}" );
fi;
elif rel[i][i][k][1] <= n+d then
AppendTo( file, "t_", rel[i][i][k][1]-n );
if not PPP_Equal( rel[i][i][k][2], One1 ) then
AppendTo( file, "^{" );
AppendPPP( file, rel[i][i][k][2] );
AppendTo( file, "}" );
fi;
else AppendTo( file, "c_", rel[i][i][k][1]-n-d );
if not PPP_Equal( rel[i][i][k][2], One1 ) then
AppendTo( file, "^{" );
AppendPPP( file, rel[i][i][k][2] );
AppendTo( file, "}" );
fi;
fi;
od;
fi;
## t's powers
elif i <= n+d then
if first_rel_done then
AppendTo( file, ",\\\\\n & & " );
else first_rel_done := true;
fi;
AppendTo( file, "t_", i-n, "^{" );
AppendPPP( file, expo );
AppendTo( file, "} = " );
if rel[i][i][1][1] = i and PPP_Equal( rel[i][i][1][2], Zero0 ) then
AppendTo( file, "1" );
else
for k in [1..Length( rel[i][i] )] do
## relations do not contain g's
if rel[i][i][k][1] <= n+d then
AppendTo( file, "t_", rel[i][i][k][1]-n );
if not PPP_Equal( rel[i][i][k][2], One1 ) then
AppendTo( file, "^{" );
AppendPPP( file, rel[i][i][k][2] );
AppendTo( file, "}" );
fi;
else AppendTo( file, "c_", rel[i][i][k][1]-n-d );
if not PPP_Equal( rel[i][i][k][2], One1 ) then
AppendTo( file, "^{" );
AppendPPP( file, rel[i][i][k][2] );
AppendTo( file, "}" );
fi;
fi;
od;
fi;
elif not PPP_Equal( expo_vec[i-n-d], Zero0 ) then
if first_rel_done then
AppendTo( file, ",\\\\\n & & " );
else first_rel_done := true;
fi;
AppendTo( file, "c_", i-n-d, "^{" );
AppendPPP( file, expo_vec[i-n-d] );
AppendTo( file, "} = " );
AppendTo( file, "1" );
fi;
od;
AppendTo( file, "\\; \\rangle\n\\end{eqnarray*}\n" );
fi;
end);
###############################################################################
##
#M LatexInputPPPPcpGroups( record )
##
## Input: a string file, which is a file-name, and a record record, which
## represents p-power-poly-pcp-groups
##
## Output: the function writes the presentations of record to file in latex
## code in short form
##
InstallMethod( LatexInputPPPPcpGroups, true, [ IsString, IsRecord ], 0,
function( file, record )
local G;
G := PPPPcpGroupsNC( record );
LatexInputPPPPcpGroups( file, G );
end);
###############################################################################
##
#M LatexInputPPPPcpGroupsAppend( file, grp_pres )
##
## Input: a string file, which is a file-name, and p-power-poly-pcp-groups
## grp_pres
##
## Output: the function appends the presentations for grp_pres to file in latex
## code in short form
##
InstallMethod(LatexInputPPPPcpGroupsAppend,true,[IsString,IsPPPPcpGroups],0,
function( file, grp_pres )
local p, n, d, m, rel, expo, expo_vec, name, i, j, k, One1, Zero0,
first_rel_done;
## Initialize
p := grp_pres!.prime;
n := grp_pres!.n;
d := grp_pres!.d;
m := grp_pres!.m;
rel := grp_pres!.rel;
expo := grp_pres!.expo;
expo_vec := grp_pres!.expo_vec;
name := grp_pres!.name;
One1 := Int2PPowerPoly( p, 1 );
Zero0 := Int2PPowerPoly( p, 0 );
## Start the file
AppendTo( file, "\\begin{eqnarray*}\n" );
AppendTo( file, name, " = \\langle \\; " );
## catch trivial group
if n = 0 and d = 0 and m = 0 then
AppendTo( file, "\\rangle\n\\end{eqnarray*}" );
else
## print the g's
if n > 0 then
AppendTo( file, "g_1" );
if n = 2 then
AppendTo( file, ",g_2" );
elif n > 2 then
AppendTo( file, ", \\ldots, g_", n );
fi;
fi;
## print the t's
if d > 0 then
if n > 0 then
AppendTo( file, "," );
fi;
AppendTo( file, "t_1" );
if d = 2 then
AppendTo( file, ",t_2" );
elif d > 2 then
AppendTo( file, ", \\ldots, t_", d );
fi;
fi;
## print the c's
if m > 0 then
if n > 0 or d > 0 then
AppendTo( file, "," );
fi;
AppendTo( file, "c_1" );
if m = 2 then
AppendTo( file, ",c_2" );
elif m > 2 then
AppendTo( file, ", \\ldots, c_", m );
fi;
fi;
first_rel_done := false;
## middle slash and relations
AppendTo( file, "& | &" );
for i in [1..n+m+d] do
## conjugating relations
for j in [1..i-1] do
## conjugating g -> only conjugating with lower g's
if i <= n then
if rel[i][j] <> [[i,1]] then
if first_rel_done then
AppendTo( file, ",\\\\\n & & " );
else first_rel_done := true;
fi;
AppendTo( file, "g_", i, "\^{g_", j, "} = " );
for k in [1..Length( rel[i][j] )] do
if rel[i][j][k][1] <= n then
AppendTo( file, "g_", rel[i][j][k][1] );
if rel[i][j][k][2] <> 1 then
AppendTo( file, "^{", rel[i][j][k][2], "}" );
fi;
elif rel[i][j][k][1] <= n+d then
AppendTo( file, "t_", rel[i][j][k][1]-n );
if not PPP_Equal( rel[i][j][k][2], One1 ) then
AppendTo( file, "^{" );
AppendPPP( file, rel[i][j][k][2] );
AppendTo( file, "}" );
fi;
else AppendTo( file, "c_", rel[i][j][k][1]-n-d );
if PPP_Equal( rel[i][j][k][2], One1 ) then
AppendTo( file, "^{" );
AppendPPP( file, rel[i][j][k][2] );
AppendTo( file, "}" );
fi;
fi;
od;
fi;
## conjugating t's with g's and lower t's
elif i <= n+d then
if rel[i][j][1][1] <> i and not PPP_Equal( rel[i][j][1][2], One1 ) then
if first_rel_done then
AppendTo( file, ",\\\\\n & & " );
else first_rel_done := true;
fi;
AppendTo( file, "t_", i-n );
if j <= n then
AppendTo( file, "\^{g_", j, "} = " );
else AppendTo( file, "\^{t_", j-n, "} = " );
fi;
for k in [1..Length( rel[i][j] )] do
if rel[i][j][k][1] <= n then
AppendTo( file, "g_", rel[i][j][k][1] );
if rel[i][j][k][2] <> 1 then
AppendTo( file, "^{", rel[i][j][k][2], "}" );
fi;
elif rel[i][j][k][1] <= n+d then
AppendTo( file, "t_", rel[i][j][k][1]-n );
if not PPP_Equal( rel[i][j][k][2], One1 ) then
AppendTo( file, "^{" );
AppendPPP( file, rel[i][j][k][2] );
AppendTo( file, "}" );
fi;
else AppendTo( file, "c_", rel[i][j][k][1]-n-d );
if not PPP_Equal( rel[i][j][k][2], One1 ) then
AppendTo( file, "^{" );
AppendPPP( file, rel[i][j][k][2] );
AppendTo( file, "}" );
fi;
fi;
od;
fi;
## c's are central thus no conjugating relation
fi;
od;
## power relations
## g's powers
if i <= n then
if first_rel_done then
AppendTo( file, ",\\\\\n & & " );
else first_rel_done := true;
fi;
AppendTo( file, "g_", i, "^{", p, "} = " );
if rel[i][i] = [[i,0]] then
AppendTo( file, "1" );
else
for k in [1..Length( rel[i][i] )] do
if rel[i][i][k][1] <= n then
AppendTo( file, "g_", rel[i][i][k][1] );
if rel[i][i][k][2] <> 1 then
AppendTo( file, "^{", rel[i][i][k][2], "}" );
fi;
elif rel[i][i][k][1] <= n+d then
AppendTo( file, "t_", rel[i][i][k][1]-n );
if not PPP_Equal( rel[i][i][k][2], One1 ) then
AppendTo( file, "^{" );
AppendPPP( file, rel[i][i][k][2] );
AppendTo( file, "}" );
fi;
else AppendTo( file, "c_", rel[i][i][k][1]-n-d );
if not PPP_Equal( rel[i][i][k][2], One1 ) then
AppendTo( file, "^{" );
AppendPPP( file, rel[i][i][k][2] );
AppendTo( file, "}" );
fi;
fi;
od;
fi;
## t's powers
elif i <= n+d then
if first_rel_done then
AppendTo( file, ",\\\\\n & & " );
else first_rel_done := true;
fi;
AppendTo( file, "t_", i-n, "^{" );
AppendPPP( file, expo );
AppendTo( file, "} = " );
if rel[i][i][1][1] = i and PPP_Equal( rel[i][i][1][2], Zero0 ) then
AppendTo( file, "1" );
else
for k in [1..Length( rel[i][i] )] do
## relations do not contain g's
if rel[i][i][k][1] <= n+d then
AppendTo( file, "t_", rel[i][i][k][1]-n );
if not PPP_Equal( rel[i][i][k][2], One1 ) then
AppendTo( file, "^{" );
AppendPPP( file, rel[i][i][k][2] );
AppendTo( file, "}" );
fi;
else AppendTo( file, "c_", rel[i][i][k][1]-n-d );
if not PPP_Equal( rel[i][i][k][2], One1 ) then
AppendTo( file, "^{" );
AppendPPP( file, rel[i][i][k][2] );
AppendTo( file, "}" );
fi;
fi;
od;
fi;
elif not PPP_Equal( expo_vec[i-n-d], Zero0 ) then
if first_rel_done then
AppendTo( file, ",\\\\\n & & " );
else first_rel_done := true;
fi;
AppendTo( file, "c_", i-n-d, "^{" );
AppendPPP( file, expo_vec[i-n-d] );
AppendTo( file, "} = " );
AppendTo( file, "1" );
fi;
od;
AppendTo( file, "\\; \\rangle\n\\end{eqnarray*}\n" );
fi;
end);
###############################################################################
##
#M LatexInputPPPPcpGroupsAppend( file, record )
##
## Input: a string file, which is a file-name, and a record record, which
## represents p-power-poly-pcp-groups
##
## Output: the function appends the presentations of record to file in latex
## code in short form
##
InstallMethod( LatexInputPPPPcpGroupsAppend,true,[IsString,IsRecord],0,
function( file, record )
local G;
G := PPPPcpGroupsNC( record );
LatexInputPPPPcpGroupsAppend( file, G );
end);
###############################################################################
##
#M LatexInputPPPPcpGroupsAllAppend( file, grp_pres )
##
## Input: a string file, which is a file-name, and p-power-poly-pcp-groups
## grp_pres
##
## Output: the function appends the presentations for grp_pres to file in latex
## code (all relations)
##
InstallMethod(LatexInputPPPPcpGroupsAllAppend,true,[IsString,IsPPPPcpGroups],0,
function( file, grp_pres )
local p, n, d, m, rel, expo, expo_vec, name, i, j, k, One1, Zero0,
first_rel_done;
## Initialize
p := grp_pres!.prime;
n := grp_pres!.n;
d := grp_pres!.d;
m := grp_pres!.m;
rel := grp_pres!.rel;
expo := grp_pres!.expo;
expo_vec := grp_pres!.expo_vec;
name := grp_pres!.name;
One1 := Int2PPowerPoly( p, 1 );
Zero0 := Int2PPowerPoly( p, 0 );
## Start the file
AppendTo( file, "\\begin{eqnarray*}\n" );
AppendTo( file, name, " = \\langle \\; " );
## catch trivial group
if n = 0 and d = 0 and m = 0 then
AppendTo( file, "\\rangle\n\\end{eqnarray*}" );
else
## print the g's
if n > 0 then
AppendTo( file, "g_1" );
if n = 2 then
AppendTo( file, ",g_2" );
elif n > 2 then
AppendTo( file, ", \\ldots, g_", n );
fi;
fi;
## print the t's
if d > 0 then
if n > 0 then
AppendTo( file, "," );
fi;
AppendTo( file, "t_1" );
if d = 2 then
AppendTo( file, ",t_2" );
elif d > 2 then
AppendTo( file, ", \\ldots, t_", d );
fi;
fi;
## print the c's
if m > 0 then
if n > 0 or d > 0 then
AppendTo( file, "," );
fi;
AppendTo( file, "c_1" );
if m = 2 then
AppendTo( file, ",c_2" );
elif m > 2 then
AppendTo( file, ", \\ldots, c_", m );
fi;
fi;
first_rel_done := false;
## middle slash and relations
AppendTo( file, "& | &" );
for i in [1..n+m+d] do
## conjugating relations
for j in [1..i-1] do
## conjugating g -> only conjugating with lower g's
if i <= n then
if first_rel_done then
AppendTo( file, ",\\\\\n & & " );
else first_rel_done := true;
fi;
AppendTo( file, "g_", i, "\^{g_", j, "} = " );
for k in [1..Length( rel[i][j] )] do
if rel[i][j][k][1] <= n then
AppendTo( file, "g_", rel[i][j][k][1] );
if rel[i][j][k][2] <> 1 then
AppendTo( file, "^{", rel[i][j][k][2], "}" );
fi;
elif rel[i][j][k][1] <= n+d then
AppendTo( file, "t_", rel[i][j][k][1]-n );
if not PPP_Equal( rel[i][j][k][2], One1 ) then
AppendTo( file, "^{" );
AppendPPP( file, rel[i][j][k][2] );
AppendTo( file, "}" );
fi;
else AppendTo( file, "c_", rel[i][j][k][1]-n-d );
if not PPP_Equal( rel[i][j][k][2], One1 ) then
AppendTo( file, "^{" );
AppendPPP( file, rel[i][j][k][2] );
AppendTo( file, "}" );
fi;
fi;
od;
## conjugating t's with g's and lower t's
elif i <= n+d then
if first_rel_done then
AppendTo( file, ",\\\\\n & & " );
else first_rel_done := true;
fi;
AppendTo( file, "t_", i-n );
if j <= n then
AppendTo( file, "\^{g_", j, "} = " );
else AppendTo( file, "\^{t_", j-n, "} = " );
fi;
for k in [1..Length( rel[i][j] )] do
if rel[i][j][k][1] <= n then
AppendTo( file, "g_", rel[i][j][k][1] );
if rel[i][j][k][2] <> 1 then
AppendTo( file, "^{", rel[i][j][k][2], "}" );
fi;
elif rel[i][j][k][1] <= n+d then
AppendTo( file, "t_", rel[i][j][k][1]-n );
if not PPP_Equal( rel[i][j][k][2], One1 ) then
AppendTo( file, "^{" );
AppendPPP( file, rel[i][j][k][2] );
AppendTo( file, "}" );
fi;
else AppendTo( file, "c_", rel[i][j][k][1]-n-d );
if not PPP_Equal( rel[i][j][k][2], One1 ) then
AppendTo( file, "^{" );
AppendPPP( file, rel[i][j][k][2] );
AppendTo( file, "}" );
fi;
fi;
od;
## c's are central thus no conjugating relation
## last line c's are central
fi;
od;
## power relations
## g's powers
if i <= n then
if first_rel_done then
AppendTo( file, ",\\\\\n & & " );
else first_rel_done := true;
fi;
AppendTo( file, "g_", i, "^{", p, "} = " );
if rel[i][i] = [[i,0]] then
AppendTo( file, "1" );
else
for k in [1..Length( rel[i][i] )] do
if rel[i][i][k][1] <= n then
AppendTo( file, "g_", rel[i][i][k][1] );
if rel[i][i][k][2] <> 1 then
AppendTo( file, "^{", rel[i][i][k][2], "}" );
fi;
elif rel[i][i][k][1] <= n+d then
AppendTo( file, "t_", rel[i][i][k][1]-n );
if not PPP_Equal( rel[i][i][k][2], One1 ) then
AppendTo( file, "^{" );
AppendPPP( file, rel[i][i][k][2] );
AppendTo( file, "}" );
fi;
else AppendTo( file, "c_", rel[i][i][k][1]-n-d );
if PPP_Equal( rel[i][i][k][2], One1 ) then
AppendTo( file, "^{" );
AppendPPP( file, rel[i][i][k][2] );
AppendTo( file, "}" );
fi;
fi;
od;
fi;
## t's powers
elif i <= n+d then
if first_rel_done then
AppendTo( file, ",\\\\\n & & " );
else first_rel_done := true;
fi;
AppendTo( file, "t_", i-n, "^{" );
AppendPPP( file, expo );
AppendTo( file, "} = " );
if rel[i][i][1][1] = i and PPP_Equal( rel[i][i][1][2], Zero0 ) then
AppendTo( file, "1" );
else
for k in [1..Length( rel[i][i] )] do
## relations do not contain g's
if rel[i][i][k][1] <= n+d then
AppendTo( file, "t_", rel[i][i][k][1]-n );
if not PPP_Equal( rel[i][i][k][2], One1 ) then
AppendTo( file, "^{" );
AppendPPP( file, rel[i][i][k][2] );
AppendTo( file, "}" );
fi;
else AppendTo( file, "c_", rel[i][i][k][1]-n-d );
if not PPP_Equal( rel[i][i][k][2], One1 ) then
AppendTo( file, "^{" );
AppendPPP( file, rel[i][i][k][2] );
AppendTo( file, "}" );
fi;
fi;
od;
fi;
elif not PPP_Equal( expo_vec[i-n-d], Zero0 ) then
if first_rel_done then
AppendTo( file, ",\\\\\n & & " );
else first_rel_done := true;
fi;
AppendTo( file, "c_", i-n-d, "^{" );
AppendPPP( file, expo_vec[i-n-d] );
AppendTo( file, "} = " );
AppendTo( file, "1" );
fi;
od;
if m > 0 then
AppendTo( file, ",\\\\\n & & c_i \\mbox{ are central for } 1 \\le i \\le");
AppendTo( file, m );
fi;
AppendTo( file, "\\; \\rangle\n\\end{eqnarray*}\n" );
fi;
end
);
###############################################################################
##
#M LatexInputPPPPcpGroupsAllAppend( file, record )
##
## Input: a string file, which is a file-name, and a record record, which
## represents p-power-poly-pcp-groups
##
## Output: the function appends the presentations of record to file in latex
## code (all relations)
##
InstallMethod( LatexInputPPPPcpGroupsAllAppend, true, [ IsString, IsRecord ], 0,
function( file, record )
local G;
G := PPPPcpGroupsNC( record );
LatexInputPPPPcpGroupsAllAppend( file, G );
end);
###############################################################################
##
#M AppendPPP( file, el )
##
## Input: a sting file and a p-power-poly element el
##
## Output: the function appends the p-power-poly element to file in latex code
##
InstallMethod( AppendPPP, true, [ IsString, IsList ], 0,
function( file, obj )
local p, c, l_c, strg, i, j, One1, start;
p := obj[1];
c := obj[2];
One1 := Int2PPowerPoly( p, 1 );
## check for trivial cases
if c = [] then
AppendTo( file, "0" );
elif PPP_Equal( obj, One1 ) then
AppendTo( file, "1" );
## start appending
else strg := "";
l_c := Length( c );
start := false;
## append p^(0x)-part
if c[1] <> 0 then
Append( strg, String( c[1] ) );
start := true;
fi;
## append p^x-part
if l_c > 1 then
if c[2] < 0 then
if c[2] = -1 then
Append( strg, "-" );
else Append( strg, String( c[2] ) );
Append( strg, "\\cdot" );
fi;
Append( strg, String( p ) );
Append( strg, "^x" );
start := true;
elif c[2] > 0 then
if start then
Append( strg, "+" );
fi;
if c[2] <> 1 then
Append( strg, String( c[2] ) );
Append( strg, "\\cdot" );
fi;
Append( strg, String( p ) );
Append( strg, "^x" );
start := true;
fi;
fi;
## append rest
for i in [3..l_c] do
if c[i] < 0 then
if c[i] = -1 then
Append( strg, "-" );
else Append( strg, String( c[i] ) );
Append( strg, "\\cdot" );
fi;
Append( strg, String( p ) );
Append( strg, "^{" );
Append( strg, String( i ) );
Append( strg, "x}" );
start := true;
elif c[i] > 0 then
if start then
Append( strg, "+" );
fi;
if c[i] <> 1 then
Append( strg, String( c[i] ) );
Append( strg, "\\cdot" );
fi;
Append( strg, String( p ) );
Append( strg, "^{" );
Append( strg, String( i ) );
Append( strg, "x}" );
start := true;
fi;
od;
fi;
AppendTo( file, strg );
end);
#E LatexInput.gi . . . . . . . . . . . . . . . . . . . . . . . . . ends here
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