The manifold inheritance conjecture for isospectral lens orbifolds

Let LL and LL' be (2n1)(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<pn10<p\leq n-1, say that LL and LL' are pp-isospectral when their spectra on pp-forms agree.

The manifold inheritance conjecture. If LL and LL' are pp-isospectral for some 0<pn10<p\leq n-1 and LL is a lens space, then LL' 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.

Sources & referencesView supporting material

Primary source

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

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