activity
20072026
most citedVariational principle for nonhyperbolic ergodic measures: Skew products and elliptic cocycles

4 citations · 7 across the 7 of their papers we have counts for

collaborators

7 papers

math.DS2026

Lyapunov spectrum of homoclinic classes

Lorenzo J. Díaz, Katrin Gelfert, Xiaodong Wang +1

We study the Lyapunov spectrum of the ergodic measures of isolated homoclinic classes of -generic diffeomorphisms. We show that this spectrum has nonempty interior and that an…

math.DS2025

Hausdorff Dimension of Sets of Generic Points for Non-statistical Dynamical Systems

Douglas Coates, Katrin Gelfert

We consider one dimensional maps with several neutral fixed points that do not admit any physical measures. We show that there is simplex of measures so that every measure in this…

math.DS2025

Equilibrium states by synchronization, symbolic extensions, and factors

Katrin Gelfert, Dominik Kwietniak, Yuri Lima

We combine the two classical topological concepts, time-preserving topological factors and synchronizing time-changes of a continuous flow, and explore some of their thermodynamic…

math.DS2023

Synchronization rates and limit laws for random dynamical systems

Katrin Gelfert, Graccyela Salcedo

We study general random dynamical systems of continuous maps on some compact metric space. Assuming a local contraction condition and uniqueness of the stationary measure, we estab…

math.DS2021★ 4 cited

Variational principle for nonhyperbolic ergodic measures: Skew products and elliptic cocycles

Lorenzo J. Díaz, Katrin Gelfert, Michał Rams

For a large class of transitive non-hyperbolic systems, we construct nonhyperbolic ergodic measures with entropy arbitrarily close to its maximal possible value. The systems we con…

math.DS2020★ 1 cited

Geodesic flows modeled by expansive flows: Compact surfaces without conjugate points and continuous Green bundles

Rafael O. Ruggiero, Katrin Gelfert

We study the geodesic flow of a compact surface without conjugate points and genus greater than one and continuous Green bundles. Identifying each strip of bi-asymptotic geodesics…