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gap> w3 := SymplecticSpace(3,3);
W(3, 3)
gap> w5 := SymplecticSpace(5,3);
W(5, 3)
gap> pg := AmbientSpace(w5);
PG(5, 3)
gap> iter := Iterator(ElementsOfIncidenceStructure(pg,4));
<iterator>
gap> perp := PolarityOfProjectiveSpace(w5);
<polarity of PG(5, GF(3)), < immutable compressed matrix 6x6 over GF(
3) >, F^0 >
gap> solid := NextIterator(iter);
<a solid in PG(5, 3)>
gap> em := NaturalEmbeddingBySubspace(w3,w5,solid);
<geometry morphism from <Elements of W(3, 3)> to <Elements of W(5, 3)>>
gap> points := Points(w3);
<points of W(3, 3)>
gap> points2 := ImagesSet(em,AsSet(points));;
#I Computing nice monomorphism...
gap> ForAll(points2,x -> x in solid);
true
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