The circular orderability version of the L-space conjecture

Let MM be an irreducible, rational homology 33-sphere that is not a lens space. Circular orderability version of the L-space conjecture. The following are equivalent:

  1. The fundamental group of MM is circularly orderable.
  2. There exists a finite cyclic cover M~\widetilde{M} of MM that supports a coorientable taut foliation.
  3. There exists a finite cyclic cover M~\widetilde{M} of MM that is not an L-space.

This reformulation seeks to approach the L-space conjecture through finite cyclic covers. It is presented as a conjectural strengthening adapted to circular orderability, and remains open in the stated generality.

Sources & referencesView supporting material

Primary source

Idrissa Ba and Adam Clay, “Circular orderability of 3-manifold groups”, arXiv:2106.10736 (2024).

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