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Algebra/Topology Seminar
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Algebra/Topology Seminar – Patricia Cahn (Smith College)
Algebra/Topology Seminar – Patricia Cahn (Smith College)
Title: Colored Tri-Plane Diagrams and the Slice-Ribbon Problem Abstract: We study dihedral branched covers of the four-dimensional sphere, where the branching set is a surface with one singularity modeled on the cone on a knot K.  We construct examples of these covers using colored tri-plane diagrams, which are triples of tangles that can be used