"Source: Text/Group/GrpPC.text";
"Line: 6672";
"Date: Thu Sep 25 14:47:45 2025";
"Main: Fri Sep 26 14:29:19 2025";
// original file: Text/Group/GrpPC.text, line: 6672
// Example: H70E49 ()
print "Example: H70E49";
ei := GetEchoInput();
SetEchoInput(true);
M := RandomMatrix(GF(3), 50, 50);
N := RandomMatrix(GF(3), 50, 50);
Forms1 := [M - Transpose(M), N - Transpose(N)];
s := Tensor(Forms1, 2, 1);
s;
IsAlternating(s);
X := Random(GL(50, 3));
Y := Random(GL(2, 3));
Maps := [*X, X, Y*];
H := Homotopism(Maps, CohomotopismCategory(3));
t := s @ H;
t;
s eq t;
pisometric, Phi := TGIsPseudoIsometric(s, t : Cent :=false);
pisometric;
Phi.0;
SetEchoInput(ei);
