Good real pictures of corank one map germs from the $n$-space to the $(n+1)$-space

R. Giménez Conejero; Ignacio Breva Ribes

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arXiv · 2507.13467

Good real pictures of corank one map germs from the $n$-space to the $(n+1)$-space

R. Giménez Conejero·Ignacio Breva Ribes

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Abstract

We study corank one $A$-finite germs $f:(\mathbb{R}^n,0)\rightarrow (\mathbb{R}^{n+1},0)$ and their complexifications. More precisely, we study when these germs provide good real pictures of the complex germs, i.e., when there is a real deformation that has the same homology in the image (hence, homotopy) than the generic complex deformation. We give a new sufficient condition that can be computed in practice, as well as examples.

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R. Giménez Conejero, Ignacio Breva Ribes. 2025-07-17. Good real pictures of corank one map germs from the $n$-space to the $(n+1)$-space. https://arxiv.org/abs/2507.13467

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