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math.GT2004★ 3 cited
Stability of compact actions of the Heisenberg group
Tania M. Begazo, Nicolau C. Saldanha
Let G be the Heisenberg group of real lower triangular 3x3 matrices with unit diagonal. A locally free smooth action of G on a manifold M^4 is given by linearly independent vector…
math.GT2004
Homotopy and cohomology of spaces of locally convex curves in the sphere
Nicolau C. Saldanha
We discuss the homotopy type and the cohomology of spaces of locally convex parametrized curves gamma: [0,1] -> S^2, i.e., curves with positive geodesic curvature. The space of all…