Lens rigidity conjecture for manifolds of Anosov type

Let (M1,g1)(M_1,g_1) and (M2,g2)(M_2,g_2) be smooth Riemannian manifolds of Anosov type whose boundary metrics agree:

(M1,g1M1)=(M2,g2M2).(\partial M_1,g_1|_{\partial M_1})=(\partial M_2,g_2|_{\partial M_2}).

Let (g,Sg)(\ell_g,S_g) denote the lens data. Lens rigidity conjecture. If

(g1,Sg1)=(g2,Sg2),(\ell_{g_1},S_{g_1})=(\ell_{g_2},S_{g_2}),

then there exists a smooth diffeomorphism ψ\psi, equal to the identity on the boundary, such that

ψg2=g1.\psi^*g_2=g_1.

This extends boundary and lens rigidity from negatively curved or simple manifolds to the broader class of manifolds of Anosov type. The source states that there are no counterexamples to this conjecture and identifies lens rigidity in this class as open.

Sources & referencesView supporting material

Primary source

Mihajlo Cekić, Colin Guillarmou and Thibault Lefeuvre, “Local lens rigidity for manifolds of Anosov type”, arXiv:2204.02476 (2023).

Additional references

3 papers in this index state this conjecture (2008–2022). The statement above is taken from the most recent of them; the others are arXiv:1401.1019, arXiv:0812.0827.

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