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Use for questions regarding duality of mathematical object, i.e. dual spaces, objects with two possible interpretations etc.
2
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2
answers
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singularities of the dual variety of a surface
I am looking for a proof/reference of the following simple fact, which I think it holds true.
Let $S\subset \mathbb{P}^n$ be a surface embedded by a very ample linear system. Then I know that the dua …
3
votes
singularities of the dual variety of a surface
The answer is yes, the claim is true. Moreover, as long as the dual variety is an irreducible hypersurface (i.e. most cases), then the claim on the singularity of the plane section holds true for any …