A note on Markov type constants
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- Ohta, SI. & Pichot, M. Arch. Math. (2009) 92: 80. doi:10.1007/s00013-008-2672-2
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We prove that, if a geodesic metric space has Markov type 2 with constant 1, then it is an Alexandrov space of nonnegative curvature. The same technique provides a lower bound of the Markov type 2 constant of a space containing a tripod or a branching point.