Weak Gibbs measures for the natural extension of $(\hat{I}º/{\hat{I}}^2,{\hat{I}}^2)$-shifts

Miki Yamashita

In this paper we consider the weak Gibbs measures for $(\hat{I}\pm ,{\hat{I}}^2)$-shifts. In the case of $\hat{I}\pm =0$, Pfister and Sullivan have given a necessary and sufficient condition on ${\hat{I}}^2$ such th…