The finite-cover topological overlap conjecture

Let XX be a connected 22-dimensional simplicial complex whose fundamental group has property T. The finite-cover topological overlap conjecture. There exists c>0c>0 such that every finite cover of XX has the cc-topological overlap property. This is proposed as a consequence of higher-property-T methods together with integral and mod-pp expansion; the source gives no resolution status.

Sources & referencesView supporting material

Primary source

Uri Bader and Roman Sauer, “Higher property T and below-rank phenomena of lattices”, arXiv:2511.20192 (2026).

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