Baum-Dąbrowski-Hajac topological Borsuk-Ulam conjecture

Let XX be a compact Hausdorff space with a free action of a nontrivial compact group GG. Equip the join XGX * G with the diagonal action. Baum-Dąbrowski-Hajac's topological Borsuk-Ulam conjecture. There is no equivariant map

XGX.X * G \to X.

This generalizes the Borsuk-Ulam theorem from antipodal actions on spheres to free actions of compact groups on compact Hausdorff spaces. The source gives no resolution status for this conjecture.

Sources & referencesView supporting material

Primary source

Alexandru Chirvasitu and Benjamin Passer, “Invariants in Noncommutative Dynamics”, arXiv:1804.01434 (2019).

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