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gap> ps := SymplecticSpace(5,9);
W(5, 9)
gap> phi := PolarityOfProjectiveSpace(ps);
<polarity of PG(5, GF(3^2)) >
gap> ps := EllipticQuadric(3,4);
Q-(3, 4)
gap> phi := PolarityOfProjectiveSpace(ps);
<polarity of PG(3, GF(2^2)) >
gap> ps := ParabolicQuadric(4,4);
Q(4, 4)
gap> phi := PolarityOfProjectiveSpace(ps);
Error, no polarity of the ambient projective space can be associated to <ps> called from
<function "unknown">( <arguments> )
called from read-eval loop at line 13 of *stdin*
you can 'quit;' to quit to outer loop, or
you can 'return;' to continue
brk> quit;
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