The group-ring resolution conjecture for symmetric spaces
The group-ring resolution conjecture for symmetric spaces
Let be a symmetric space with curvature and real rank . Let act on , and suppose there is a minimum displacement greater than , meaning
for every and every .
Group-ring resolution conjecture. There is a function such that every -generated ideal in has a free resolution of length .
Such a resolution property would imply, via the methods of the paper, -cellular waist inequalities for maps from uniform locally symmetric spaces of real rank whenever . The conjecture extends the hyperbolic-space case, where the corresponding group-ring ideals are free.
Sources & referencesView supporting material
Primary source
Grigori Avramidi and Thomas Delzant, “Cellular waists of hyperbolic spaces”, arXiv:2606.13585 (2026).
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