Morphisms preserving the set of words coding three interval exchange
Abstract
Any amicable pair φ, of Sturmian morphisms enables a construction of a ternary morphism η which preserves the set of infinite words coding 3-interval exchange. We determine the number of amicable pairs with the same incidence matrix in SL(2,N) and we study incidence matrices associated with the corresponding ternary morphisms η.
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