Kazuto Takao
Abstract
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Lips and swallow-tails are generic local moves of singularities of a smooth map to a 2-manifold. We prove that these moves of singularities of the product map of two functions on a 3-manifold can be realized by isotopies of the functions.
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Lips and swallow-tails are generic local moves of singularities of a smooth map to a 2-manifold. We prove that these moves of singularities of the product map of two functions on a 3-manifold can be realized by isotopies of the functions.
Key concepts: Gravitational singularity, Manifold (fluid mechanics), Product (mathematics), Mathematics, Pure mathematics, Topology (electrical circuits), Mathematical analysis, Geometry