Degrees of Maps between Grassmann Manifolds

نویسندگان

  • PARAMESWARAN SANKARAN
  • SWAGATA SARKAR
چکیده

Let f : Gn,k−→Gm,l be any continuous map between two distinct complex (resp. quaternionic) Grassmann manifolds of the same dimension. We show that the degree of f is zero provided n,m are sufficiently large and l ≥ 2. If the degree of f is ±1, we show that (m, l) = (n, k) and f is a homotopy equivalence. Also, we prove that the image under f ∗ of elements of a set of algebra generators of H(Gm,l;Q) is determined upto a sign, ±, if the degree of f is non-zero.

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تاریخ انتشار 2008