Delta-Cell Decomposition and Curve Selection

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Chinese explanation / 中文解读

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Original abstract

We develop a cell decomposition framework for o-minimal structures equipped with a generic derivation. To a $δ$-cell we associate source cells and finite configurations in ordinary o-minimal sorts, allowing differential-topological questions to be studied through finite jet spaces. We then introduce a metric space of definable curve germs and identify its local half-space pieces with Cartesian powers of the maximal ideal of the Hardy field of definable germs. Using this germ-space description, we prove an abstract curve selection theorem for the $δ$-topology. In the case of closed ordered differential fields, we further describe concrete asymptotic representatives for the abstract curve germs.

Links and sources

• Official / arXiv page
• PDF from original source

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