The manifold inheritance conjecture for isospectral lens orbifolds

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Let LL and L′L' be (2n−1)(2n-1)-dimensional lens orbifolds. A lens orbifold has a manifold structure when its defining parameters are coprime to its group order; in that case it is a lens space. For 0<p≤n−10<p\leq n-1, say that LL and L′L' are pp-isospectral when their spectra on pp-forms agree.

The manifold inheritance conjecture. If LL and L′L' are pp-isospectral for some 0<p≤n−10<p\leq n-1 and LL is a lens space, then L′L' is also a lens space.

The corresponding statement for p=0p=0 is given as a theorem in the paper, while the general orbifold setting admits counterexamples for positive degrees. Computational evidence suggests that this stronger inheritance property holds for lens orbifolds.

References

Primary source

Emilio A. Lauret, “A computational study on lens spaces isospectral on forms”, arXiv:1703.03077 (2017).

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