"Source: Text/LieTheory/Cartan.text";
"Line: 141";
"Date: Fri Sep 26 12:10:11 2025";
"Main: Fri Sep 26 14:29:19 2025";
// original file: Text/LieTheory/Cartan.text, line: 141
// Example: H105E2 ()
print "Example: H105E2";
ei := GetEchoInput();
SetEchoInput(true);
M1 := SymmetricMatrix([1, 3,1, 2,3,1]);
M2 := SymmetricMatrix([1, 3,1, 3,2,1]);
IsCoxeterIsomorphic(M1, M2);

CoxeterGroupOrder(M1);
assert $1 eq 24;
SetEchoInput(ei);
