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gf-core/examples/mathtext/Geometry.gf
2009-12-18 11:08:39 +00:00

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abstract Geometry = Logic ** {
fun
Line, Point, Circle : Dom ;
Intersect, Parallel : Ind -> Ind -> Atom ;
Vertical : Ind -> Atom ;
Centre : Ind -> Ind ;
Horizontal : Pred1 ;
Diverge : Pred1 ;
Contain : Pred2 ;
}