Restrictions of aspherical arrangements
classification
🧮 math.AT
math.GT
keywords
arrangementsadmitasphericalasphericityexamplesfailshereditaryhyperplane
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In this note we present examples of $K(\pi,1)$-arrangements which admit a restriction which fails to be $K(\pi,1)$. This shows that asphericity is not hereditary among hyperplane arrangements.
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