Nullhomotopic equivariant shifts and Borsuk-Ulam-compatible compact abelian groups

Alexandru Chirvasitu, Alexander Dąbrowski

We disprove the classical version of the Borsuk-Ulam-flavored conjecture, due to Baum-D{ą}browski-Hajac, that free actions $X\times \mathbb{G}\to X$ on non-empty compact Hausdorff…