# A Ruelle-Perron-Frobenius theorem for expanding circle maps with an indifferent fixed point

@inproceedings{Garibaldi2021ART, title={A Ruelle-Perron-Frobenius theorem for expanding circle maps with an indifferent fixed point}, author={Eduardo Garibaldi and Irene Inoquio-Renteria}, year={2021} }

In this note, we establish an original result for the thermodynamic formalism in the context of expanding circle transformations with an indifferent fixed point. For an observable whose continuity modulus is linked to the dynamics near such a fixed point, by identifying an appropriate linear space to evaluate the action of the transfer operator, we show that there is a strictly positive eigenfunction associated with the maximal eigenvalue given as the exponential of the topological pressure…

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