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arXiv · 2602.21759

Density of fibers for the filtered Fukaya category of $T^*N$

Stéphane Guillermou·Claude Viterbo·Bingyu Zhang
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Abstract

We answer a question of Biran and Cornea about the density of iterated cones of fibers in the Fukaya category of a cotangent bundle. We prove that indeed if we take a dense set of basepoints, the iterated cones of the cotangent fibres are dense in the Filtered Fukaya category. In an appendix we prove that the space of exact Lagrangians in a symplectic manifold is never totally bounded for the spectral distance (unless it is empty). This was implicit in \cite{MCA-VH-CV} for $n=1$ and proved for cotangent bundles of negatively curved manifolds in \cite{A-B-C}.

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Stéphane Guillermou, Claude Viterbo, Bingyu Zhang. 2026-02-25. Density of fibers for the filtered Fukaya category of $T^*N$. https://arxiv.org/abs/2602.21759

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