"Source: Text/LieTheory/Cartan.text";
"Line: 443";
"Date: Fri Sep 26 12:10:11 2025";
"Main: Fri Sep 26 14:29:19 2025";
// original file: Text/LieTheory/Cartan.text, line: 443
// Example: H105E7 ()
print "Example: H105E7";
ei := GetEchoInput();
SetEchoInput(true);
C1 := Matrix(2,2, [ 2,-2, -2,2 ]);
C2 := Matrix(2,2, [ 2,-1, -5,2 ]);
IsCoxeterIsomorphic(C1, C2);
IsCartanEquivalent(C1, C2);
assert not $1;
SetEchoInput(ei);
