gap&gt; ps := HermitianPolarSpace(3,7^2);
H(3, 7^2)
gap&gt; line := VectorSpaceToElement(ps,[[Z(7)^0,0*Z(7),Z(7^2)^34,Z(7^2)^44],
&gt; [0*Z(7),Z(7)^0,Z(7^2)^2,Z(7^2)^4]]);
&lt;a line in H(3, 7^2)&gt;
gap&gt; AmbientSpace(line);
ProjectiveSpace(3, 49)
