"Source: Text/LieTheory/GrpCox.text";
"Line: 2026";
"Date: Wed Nov  6 12:03:34 2019";
"Main: Thu May 25 10:02:38 2023";
// original file: Text/LieTheory/GrpCox.text, line: 2026
// Example: H105E25 ()
print "Example: H105E25";
ei := GetEchoInput();
SetEchoInput(true);
W := CoxeterGroup("A4");
P := StandardParabolicSubgroup(W, {1,2});
x := W.1 * W.2 * W.3;
x := TransversalElt(W, P, x);
x eq W.3;
assert $1;
x in Transversal(W, P);
assert $1;
SetEchoInput(ei);
