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#constructing the same form over different fields
mat :=
[[Z(2)^0,Z(2)^0,0*Z(2),0*Z(2)],[0*Z(2),Z(2)^0,0*Z(2),0*Z(2)],
[0*Z(2),0*Z(2),0*Z(2),Z(2)^0],[0*Z(2),0*Z(2),0*Z(2),0*Z(2)]];
form := QuadraticFormByMatrix(mat);
WittIndex(form);
form := QuadraticFormByMatrix(mat,GF(4));
WittIndex(form);
quit;
[ Dauer der Verarbeitung: 0.18 Sekunden
(vorverarbeitet)
]
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