Complements of Manin-Schechtman arrangements have non-vanishing higher homotopy groups and are therefore not K(π,1) spaces in a broad range of cases.
Lattice-isotopic arrangements are topologically isomorphic , url =
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Non-vanishing of homotopy groups of Manin--Schechtman arrangements
Complements of Manin-Schechtman arrangements have non-vanishing higher homotopy groups and are therefore not K(π,1) spaces in a broad range of cases.