Conjecture on deformation to PL affine compactifications

Let BB be a compact space with a Z{\bf Z}-affine structure with singularities, with actual and potential singular sets equal, Bsing=BpresingB^{sing}=B^{pre-sing}, and assume this set has codimension at least two. Conjecture on deformation to PL affine compactifications. There is a continuous path γ(t)\gamma(t) of Z{\bf Z}-affine structures with singularities connecting the given structure to the one from a PL compactification, such that codim(Btpresing)2codim(B_t^{pre-sing})\ge2 for every t[0,1]t\in[0,1] and every γ(t)\gamma(t) has the Finiteness and Independence properties. This is a proposed deformation principle for affine structures arising in Calabi–Yau collapse; it remains open.

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Primary source

Maxim Kontsevich and Yan Soibelman, “Affine structures and non-archimedean analytic spaces”, arXiv:math/0406564 (2004).

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