Lefschetz singularities

E2205242 UNEXPLORED

Lefschetz singularities are a class of isolated critical points of complex algebraic or symplectic maps whose local behavior governs the topology of nearby fibers and underlies the structure of Lefschetz fibrations.

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Lefschetz singularities canonical 1

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Picard–Lefschetz theory focusesOn Lefschetz singularities