bn:00401829n
Noun Concept
EL
projective διαφορική γεωμετρία  προβολική διαφορική γεωμετρία
EN
In mathematics, projective differential geometry is the study of differential geometry, from the point of view of properties of mathematical objects such as functions, diffeomorphisms, and submanifolds, that are invariant under transformations of the projective group. Wikipedia
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