We study the singularities of secant maps associated to pairs of plane curves providing their geometrical interpretation up to codimension 2. We show that for most pairs of closed plane curves the secant map is a stable map from the torus to the plane. We determine the isotopy type of the singular set of the secant map associated to pairs of convex closed curves in terms of their Whitney indices.
机构:
Department of Electrical and Computer Engineering, University of Illinois, Urbana, ILDepartment of Electrical and Computer Engineering, University of Illinois, Urbana, IL
机构:
Steklov Institute of Mathematics, Russian Academy of Sciences, Moscow 119991
Laboratoire J.-V. Poncelet, Independent University of Moscow, Moscow 119002Steklov Institute of Mathematics, Russian Academy of Sciences, Moscow 119991
Kazarian M.E.
Lando S.K.
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机构:
Laboratoire J.-V. Poncelet, Independent University of Moscow, Moscow 119002
Institute for System Research, Russian Academy of Sciences, Moscow 117218, Nakhimovskii pr. 36Steklov Institute of Mathematics, Russian Academy of Sciences, Moscow 119991