An exotic group with the Haagerup property.
An exotic group with the Haagerup property.
We prove the Haagerup property for an infinite discrete group constructed using surgery on a Euclidean Tits building of type A ˜ 2 .
2-complexes, CAT(0) geometry, [MATH.MATH-MG] Mathematics [math]/Metric Geometry [math.MG], Tits buildings, Haagerup property
2-complexes, CAT(0) geometry, [MATH.MATH-MG] Mathematics [math]/Metric Geometry [math.MG], Tits buildings, Haagerup property
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