An action of the cactus group
classification
🧮 math.AG
math.CO
keywords
groupactioncactusspaceanalogcompactificationconstructcurves
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We construct an action of the big cactus group (the fundamental group of the Deligne-Mumford compactification of the moduli space of real curves of genus zero with n undistinguished marked points) on Fock-Goncharov's SL_m analog of the decorated Teichmuller space of ideal n-gons.
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