Talk:Grassmannian

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This argument that I wrote down for χG_n,k = χG_{n − 1,k − 1} + ( − 1)^kχG_{n − 1,k} it seems to imply that for all n and k, and χG_n,k = 0 if and only if n is even and k is odd. So G_6,3 has a non-vanishing vector field. Does anyone know how to construct such a vector field? Rybu 23:14, 8 April 2007 (UTC)

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