Thompson's group F is not SCY
classification
🧮 math.GT
math.GRmath.SG
keywords
groupthompsoncannotcanonicalclassfundamentalhausmann-weinbergerinvariant
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In this note we prove that Thompson's group F cannot be the fundamental group of a symplectic 4-manifold with trivial canonical class by showing that its Hausmann-Weinberger invariant q(F) is strictly positive.
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