The tangent-cone Milnor-fiber conjecture for embedded topologically equivalent hypersurface germs

Let f,g:(Cd,0)(C,0)f,g:(\mathbb{C}^d,0)\rightarrow(\mathbb{C},0) be two germs of holomorphic functions. Their initial forms are their lowest-degree nonzero homogeneous parts, and their Milnor fibers are the corresponding Milnor fibers at the origin. Tangent-cone Milnor-fiber conjecture. If ff and gg are embedded topologically equivalent, then the Milnor fibers of their initial forms are homotopy equivalent. This conjecture concerns Zariski's Problem B and proposes that, despite the tangent cones themselves having different topology in known examples, their Milnor fibers retain the same homotopy type; its general status is not resolved in the source.

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Primary source

Nero Budur, Javier Fernández de Bobadilla, Quy Thuong Lê and Hong Duc Nguyen, “Cohomology of contact loci”, arXiv:1911.08213 (2023).

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