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{\\alpha}}(1-x)$ for $ {\\alpha}<x\\leq 1$.\n  We denote by $ {\\underline {M}}=K( {\\alpha}, {\\beta})$ the kneading sequence of\n  $T {_ { {\\alpha}, {\\beta}}}$, by $h( {\\alpha}, {\\beta})$ its topological entropy and\n  $\\Lambda=\\Lambda_{\\alpha,\\beta}$ denotes its Lyapunov exponent.\n  For a given kneading squence $ 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