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Does assumption* imply strong orderability?

Determine whether, for a closed contact manifold (M,\xi), the condition assumption*—namely, the existence of a strong symplectic filling by a weakly^+-monotone symplectic manifold whose symplectic homology unit is not eternal—implies that (M,\xi) is strongly orderable. Establishing this implication would show that the contact big fiber theorem proved under assumption* also follows from the framework requiring strong orderability.

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Background

Assumption* is used in prior work to derive contact big fiber theorems via symplectic homology, and it is known to imply orderability. The current paper’s approach yields a big fiber theorem under the stronger hypothesis of strong orderability, achieved through spectral selectors on strongly orderable manifolds.

Clarifying whether assumption* implies strong orderability would bridge the two approaches and potentially unify the respective big fiber results.

References

Conversely, while assumption* implies orderabability (Theorem 1.6), at the time of writing, we do not know if assumption* also implies strong orderability, and hence if our contact big fiber Theorem \ref{thm:bft} implies the contact big fiber proved in Theorem 1.4.

Spectral selectors on strongly orderable contact manifolds and applications (2509.12856 - Arlove, 16 Sep 2025) in Introduction, Subsection 'Contact big fiber Theorem' (discussion comparing assumption* and strong orderability)