Homology-dimension conjecture for images of stable perturbations on ICIS

Let f ⁣:(X,S)(Cp,0)f\colon (X,S)\to(\mathbb{C}^{p},0) be a map germ of finite Ae\mathscr{A}_e-codimension, where XX is an ICIS of dimension n<pn<p. Let d(f)d(f) and s(f)s(f) denote the quantities used in the source. Homology-dimension conjecture. The reduced integer homology of the image of a stable perturbation of (X,f)(X,f) is zero except possibly in dimensions

pk(pn)k+k1p-k(p-n)k+k-1

for all 2kd(f)2\leq k\leq d(f), in dimension d(f)1d(f)-1 if s(f)>d(f)s(f)>d(f), and in dimension nn if XX is non-smooth. The source presents this as an expected statement following a remark that the preceding theorem may not be sharp; no resolution status is supplied.

Sources & referencesView supporting material

Primary source

R. Giménez Conejero and J. J. Nuño-Ballesteros, “Singularities of mappings on ICIS and applications to Whitney equisingularity”, arXiv:2108.00743 (2024).

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