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Category Archives: Convex geometry
scl, sails and surgery
I have just uploaded a paper to the arXiv, entitled “Scl, sails and surgery”. The paper discusses a connection between stable commutator length in free groups and the geometry of sails. This is an interesting example of what sometimes happens … Continue reading
Round slices of pointy objects
A regular tetrahedron (in ) can be thought of as the convex hull of four pairwise non-adjacent vertices of a regular cube. A bisecting plane parallel to a face of the cube intersects the tetrahedron in a square (one can … Continue reading
Posted in Convex geometry
Tagged Banach space, Convex geometry, Dvoretzky's theorem, L_2
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Geometry and the imagination 