OP-00780 Solution claimed The centre-rank formula for aspherical motion planning AT · AIM Open Applied Problems · aspherical manifolds · centre of the fundamental group · topological complexity
OP-00792 Solution claimed A finite three-ample complex with nontrivial fundamental group AT · AIM Open Applied Problems · ample simplicial complexes · fundamental group
OP-00832 Solution claimed Injectivity of the Rips shadow map on fundamental groups AT · AIM Open Applied Problems · fundamental group · Vietoris–Rips complexes
OP-00970 Open Trivial fundamental group for Bernoulli crossed products OA · Bernoulli actions · fundamental group of II₁ factors · ℓ²-Betti numbers · Peterson's operator algebra problems