Highly transitive actions of free products
Résumé
We characterize free products admitting a faithful and highly transitive action. In particular, we show that the group PS_2(Z) (isomorphic to the free product (Z/2Z) *(Z/3Z)) admits a faithful and highly transitive action on a countable set.
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12_AGT_highly-transitive-free-products_deMSPpourHAL.pdf (294.21 Ko)
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