Projective involution symmetry conjecture for sections

Less than 1 year old · traced to

Let K⊂RnK\subset\mathbb R^n, n≥3n\geq 3, be a strictly convex body, and let S\mathcal S be a family of hyperplanes that is the image of an embedding of the tangent bundle of the sphere Sn−1\mathbb S^{n-1}, with every hyperplane in S\mathcal S intersecting the interior of KK. Projective involution conjecture. If for every X∈SX\in\mathcal S there is a different Y∈SY\in\mathcal S such that the sections of KK by XX and YY differ by a non-trivial projective involution, then KK and S\mathcal S are both invariant under the same non-trivial projective involution. This is posed as a projective generalization of the corresponding central-projection result and remains open.

References

Primary source

Bartłomiej Zawalski, “On flat shadow boundaries from point light sources and the characterization of ellipsoids”, arXiv:2603.29130 (2026).

Progress summary

Never refreshed

Nothing recorded yet. Refresh searches the literature and the public web for attempts on this problem, and writes the first summary here.

Solutions 0

No solutions have been posted yet.