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GAP 4.8.9 installation with standard packages -- copy to your CoCalc project to get it

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HAP_GCOMPLEX_SETUP:=[false];
if IsBound(x) then HAP_GCOMPLEX_SETUP[2]:=x;fi;
x:=(-1+Sqrt(-11))/2;

HAP_GCOMPLEX_LIST := [
[
rec( TheMatrixStab := Group([
[[ 1, 0 ],[ 0, 1]]
,
[[ -1, 0 ],[ 0, -1]]
,
[[ 1, 1 ],[ -1, 0]]
,
[[ -1, -1 ],[ 1, 0]]
,
[[ 0, 1 ],[ -1, -1]]
,
[[ 0, -1 ],[ 1, 1]]
]),
TheRotSubgroup := Group([
[[ 1, 0 ],[ 0, 1]]
,
[[ -1, 0 ],[ 0, -1]]
,
[[ 1, 1 ],[ -1, 0]]
,
[[ -1, -1 ],[ 1, 0]]
,
[[ 0, 1 ],[ -1, -1]]
,
[[ 0, -1 ],[ 1, 1]]
]),
BoundaryImage := rec( ListIFace:=[], ListSign:=[], ListElt:=[])
),
rec( TheMatrixStab := Group([
[[ 1, 0 ],[ 0, 1]]
,
[[ -1, 0 ],[ 0, -1]]
,
[[ x, -1 ],[ -x - 2, -x]]
,
[[ -x, 1 ],[ x + 2, x]]
,
[[ x + 1, x - 1 ],[ -1, -x - 1]]
,
[[ -x - 1, -x + 1 ],[ 1, x + 1]]
,
[[ 2, x + 2 ],[ x - 1, -2]]
,
[[ -2, -x - 2 ],[ -x + 1, 2]]
,
[[ x + 2, x ],[ -2, -x - 1]]
,
[[ -x - 2, -x ],[ 2, x + 1]]
,
[[ -1, -x - 1 ],[ -x, 2]]
,
[[ 1, x + 1 ],[ x, -2]]
,
[[ 0, -1 ],[ 1, 1]]
,
[[ 0, 1 ],[ -1, -1]]
,
[[ -x + 1, 2 ],[ x + 1, x]]
,
[[ x - 1, -2 ],[ -x - 1, -x]]
,
[[ x + 1, x ],[ -2, -x - 2]]
,
[[ -x - 1, -x ],[ 2, x + 2]]
,
[[ x, -2 ],[ -x - 1, -x + 1]]
,
[[ -x, 2 ],[ x + 1, x - 1]]
,
[[ 1, 1 ],[ -1, 0]]
,
[[ -1, -1 ],[ 1, 0]]
,
[[ -2, -x - 1 ],[ -x, 1]]
,
[[ 2, x + 1 ],[ x, -1]]
]),
TheRotSubgroup := Group([
[[ 1, 0 ],[ 0, 1]]
,
[[ -1, 0 ],[ 0, -1]]
,
[[ x, -1 ],[ -x - 2, -x]]
,
[[ -x, 1 ],[ x + 2, x]]
,
[[ x + 1, x - 1 ],[ -1, -x - 1]]
,
[[ -x - 1, -x + 1 ],[ 1, x + 1]]
,
[[ 2, x + 2 ],[ x - 1, -2]]
,
[[ -2, -x - 2 ],[ -x + 1, 2]]
,
[[ x + 2, x ],[ -2, -x - 1]]
,
[[ -x - 2, -x ],[ 2, x + 1]]
,
[[ -1, -x - 1 ],[ -x, 2]]
,
[[ 1, x + 1 ],[ x, -2]]
,
[[ 0, -1 ],[ 1, 1]]
,
[[ 0, 1 ],[ -1, -1]]
,
[[ -x + 1, 2 ],[ x + 1, x]]
,
[[ x - 1, -2 ],[ -x - 1, -x]]
,
[[ x + 1, x ],[ -2, -x - 2]]
,
[[ -x - 1, -x ],[ 2, x + 2]]
,
[[ x, -2 ],[ -x - 1, -x + 1]]
,
[[ -x, 2 ],[ x + 1, x - 1]]
,
[[ 1, 1 ],[ -1, 0]]
,
[[ -1, -1 ],[ 1, 0]]
,
[[ -2, -x - 1 ],[ -x, 1]]
,
[[ 2, x + 1 ],[ x, -1]]
]),
BoundaryImage := rec( ListIFace:=[], ListSign:=[], ListElt:=[])
),
rec( TheMatrixStab := Group([
[[ 1, 0 ],[ 0, 1]]
,
[[ -1, 0 ],[ 0, -1]]
,
[[ 0, 1 ],[ -1, 0]]
,
[[ 0, -1 ],[ 1, 0]]
]),
TheRotSubgroup := Group([
[[ 1, 0 ],[ 0, 1]]
,
[[ -1, 0 ],[ 0, -1]]
,
[[ 0, 1 ],[ -1, 0]]
,
[[ 0, -1 ],[ 1, 0]]
]),
BoundaryImage := rec( ListIFace:=[], ListSign:=[], ListElt:=[])
),
rec( TheMatrixStab := Group([
[[ 1, 0 ],[ 0, 1]]
,
[[ -1, 0 ],[ 0, -1]]
,
[[ x - 1, -x - 2 ],[ -x - 2, -x + 1]]
,
[[ -x + 1, x + 2 ],[ x + 2, x - 1]]
,
[[ 0, 1 ],[ -1, 0]]
,
[[ 0, -1 ],[ 1, 0]]
,
[[ x + 2, x - 1 ],[ x - 1, -x - 2]]
,
[[ -x - 2, -x + 1 ],[ -x + 1, x + 2]]
,
[[ x + 1, -1 ],[ -2, -x]]
,
[[ -x - 1, 1 ],[ 2, x]]
,
[[ -1, -x - 1 ],[ -x, 2]]
,
[[ 1, x + 1 ],[ x, -2]]
,
[[ -x, 2 ],[ 1, x + 1]]
,
[[ x, -2 ],[ -1, -x - 1]]
,
[[ 2, x ],[ x + 1, -1]]
,
[[ -2, -x ],[ -x - 1, 1]]
,
[[ x, -1 ],[ -2, -x - 1]]
,
[[ -x, 1 ],[ 2, x + 1]]
,
[[ -1, -x ],[ -x - 1, 2]]
,
[[ 1, x ],[ x + 1, -2]]
,
[[ x + 1, -2 ],[ -1, -x]]
,
[[ -x - 1, 2 ],[ 1, x]]
,
[[ -2, -x - 1 ],[ -x, 1]]
,
[[ 2, x + 1 ],[ x, -1]]
]),
TheRotSubgroup := Group([
[[ 1, 0 ],[ 0, 1]]
,
[[ -1, 0 ],[ 0, -1]]
,
[[ x - 1, -x - 2 ],[ -x - 2, -x + 1]]
,
[[ -x + 1, x + 2 ],[ x + 2, x - 1]]
,
[[ 0, 1 ],[ -1, 0]]
,
[[ 0, -1 ],[ 1, 0]]
,
[[ x + 2, x - 1 ],[ x - 1, -x - 2]]
,
[[ -x - 2, -x + 1 ],[ -x + 1, x + 2]]
,
[[ x + 1, -1 ],[ -2, -x]]
,
[[ -x - 1, 1 ],[ 2, x]]
,
[[ -1, -x - 1 ],[ -x, 2]]
,
[[ 1, x + 1 ],[ x, -2]]
,
[[ -x, 2 ],[ 1, x + 1]]
,
[[ x, -2 ],[ -1, -x - 1]]
,
[[ 2, x ],[ x + 1, -1]]
,
[[ -2, -x ],[ -x - 1, 1]]
,
[[ x, -1 ],[ -2, -x - 1]]
,
[[ -x, 1 ],[ 2, x + 1]]
,
[[ -1, -x ],[ -x - 1, 2]]
,
[[ 1, x ],[ x + 1, -2]]
,
[[ x + 1, -2 ],[ -1, -x]]
,
[[ -x - 1, 2 ],[ 1, x]]
,
[[ -2, -x - 1 ],[ -x, 1]]
,
[[ 2, x + 1 ],[ x, -1]]
]),
BoundaryImage := rec( ListIFace:=[], ListSign:=[], ListElt:=[])
),
],
[
rec( TheMatrixStab := Group([
[[ -1, -1 ],[ 1, 0]]
,
[[ -1, 0 ],[ 0, -1]]
,
[[ 0, -1 ],[ 1, 1]]
,
[[ 0, 1 ],[ -1, -1]]
,
[[ 1, 0 ],[ 0, 1]]
,
[[ 1, 1 ],[ -1, 0]]
]),
TheRotSubgroup := Group([
[[ -1, -1 ],[ 1, 0]]
,
[[ -1, 0 ],[ 0, -1]]
,
[[ 0, -1 ],[ 1, 1]]
,
[[ 0, 1 ],[ -1, -1]]
,
[[ 1, 0 ],[ 0, 1]]
,
[[ 1, 1 ],[ -1, 0]]
]),
BoundaryImage := rec(
ListIFace:=[ 1, 2],
 ListSign := [-1,1],
ListElt := [IdentityMat(2), IdentityMat(2)])
),
rec( TheMatrixStab := Group([
[[ -1, 0 ],[ 0, -1]]
,
[[ 1, 0 ],[ 0, 1]]
]),
TheRotSubgroup := Group([
[[ -1, 0 ],[ 0, -1]]
,
[[ 1, 0 ],[ 0, 1]]
]),
BoundaryImage := rec(
ListIFace:=[ 3, 1],
 ListSign := [-1,1],
ListElt := [IdentityMat(2), IdentityMat(2)])
),
rec( TheMatrixStab := Group([
[[ -x - 1, -x + 1 ],[ 1, x + 1]]
,
[[ -1, 0 ],[ 0, -1]]
,
[[ 1, 0 ],[ 0, 1]]
,
[[ x + 1, x - 1 ],[ -1, -x - 1]]
]),
TheRotSubgroup := Group([
[[ -x - 1, -x + 1 ],[ 1, x + 1]]
,
[[ -1, 0 ],[ 0, -1]]
,
[[ 1, 0 ],[ 0, 1]]
,
[[ x + 1, x - 1 ],[ -1, -x - 1]]
]),
BoundaryImage := rec(
ListIFace:=[ 3, 2],
 ListSign := [-1,1],
ListElt := [[[ -x - 1, -1 ],[ 1, 0]], IdentityMat(2)])
),
rec( TheMatrixStab := Group([
[[ -1, -x - 1 ],[ -x, 2]]
,
[[ -1, 0 ],[ 0, -1]]
,
[[ -2, -x - 1 ],[ -x, 1]]
,
[[ 1, 0 ],[ 0, 1]]
,
[[ 1, x + 1 ],[ x, -2]]
,
[[ 2, x + 1 ],[ x, -1]]
]),
TheRotSubgroup := Group([
[[ -1, -x - 1 ],[ -x, 2]]
,
[[ -1, 0 ],[ 0, -1]]
,
[[ -2, -x - 1 ],[ -x, 1]]
,
[[ 1, 0 ],[ 0, 1]]
,
[[ 1, x + 1 ],[ x, -2]]
,
[[ 2, x + 1 ],[ x, -1]]
]),
BoundaryImage := rec(
ListIFace:=[ 4, 2],
 ListSign := [-1,1],
ListElt := [IdentityMat(2), IdentityMat(2)])
),
rec( TheMatrixStab := Group([
[[ -1, 0 ],[ 0, -1]]
,
[[ 0, -1 ],[ 1, 0]]
,
[[ 0, 1 ],[ -1, 0]]
,
[[ 1, 0 ],[ 0, 1]]
]),
TheRotSubgroup := Group([
[[ -1, 0 ],[ 0, -1]]
,
[[ 0, -1 ],[ 1, 0]]
,
[[ 0, 1 ],[ -1, 0]]
,
[[ 1, 0 ],[ 0, 1]]
]),
BoundaryImage := rec(
ListIFace:=[ 3, 4],
 ListSign := [-1,1],
ListElt := [IdentityMat(2), IdentityMat(2)])
),
rec( TheMatrixStab := Group([
[[ -x - 1, 2 ],[ 1, x]]
,
[[ -1, 0 ],[ 0, -1]]
,
[[ -x, 2 ],[ 1, x + 1]]
,
[[ x, -2 ],[ -1, -x - 1]]
,
[[ 1, 0 ],[ 0, 1]]
,
[[ x + 1, -2 ],[ -1, -x]]
]),
TheRotSubgroup := Group([
[[ -x - 1, 2 ],[ 1, x]]
,
[[ -1, 0 ],[ 0, -1]]
,
[[ -x, 2 ],[ 1, x + 1]]
,
[[ x, -2 ],[ -1, -x - 1]]
,
[[ 1, 0 ],[ 0, 1]]
,
[[ x + 1, -2 ],[ -1, -x]]
]),
BoundaryImage := rec(
ListIFace:=[ 1, 4],
 ListSign := [-1,1],
ListElt := [[[ -x - 1, -1 ],[ 1, 0]], IdentityMat(2)])
),
],
[
rec( TheMatrixStab := Group([-IdentityMat(2)]),
TheRotSubgroup := Group([-IdentityMat(2)]),
BoundaryImage := rec(
ListIFace:=[ 
4
,
1
,
2
,
5
], ListSign := [
-1
, 
1
, 
1
, 
-1
 ],
ListElt := [
IdentityMat(2)
, 
IdentityMat(2)
, 
IdentityMat(2)
, 
IdentityMat(2)
]))
, 
rec( TheMatrixStab := Group([-IdentityMat(2)]),
TheRotSubgroup := Group([-IdentityMat(2)]),
BoundaryImage := rec(
ListIFace:=[ 
4
,
6
,
3
,
2
], ListSign := [
1
, 
1
, 
-1
, 
1
 ],
ListElt := [
IdentityMat(2)
, 
IdentityMat(2)
, 
IdentityMat(2)
, 
[[ -x - 1, -1 ],[ 1, 0]]
]))
],
];

if IsBound(HAP_GCOMPLEX_SETUP[2]) then
x:=HAP_GCOMPLEX_SETUP[2]; 
else Unbind(x); fi;