activity
20092026
most citedRobust Transitivity in Hamiltonian Dynamics

38 citations · 108 across the 9 of their papers we have counts for

collaborators

9 papers

math.DS2026

Cocycles with Quasi-Conformality II: Ergodic measures with positive entropy

Meysam Nassiri, Hesam Rajabzadeh, Zahra Reshadat

As the second part of a series on linear cocycles over chaotic systems, this paper establishes a "multiple covering principle" that robustly yields positive-entropy ergodic measure…

math.DS2026

Cantor sets in higher dimensions II: Optimal dimension constraint for stable intersections

Meysam Nassiri, Mojtaba Zareh Bidaki

It is well known that a pair of compact sets in () can be separated by small deformations if the sum of their upper box dimensions is less than …

math.DS2025

Cantor sets in higher dimension I: Criterion for stable intersections

Meysam Nassiri, Mojtaba Zareh Bidaki

We study the geometry of dynamically defined Cantor sets in arbitrary dimensions, introducing a criterion for stable intersections of such Cantor sets, under a…

math.DS2024

Cocycles with Quasi-Conformality I: Stability and abundance

Meysam Nassiri, Hesam Rajabzadeh, Zahra Reshadat

This is the first part of a series of papers devoted to the study of linear cocycles over chaotic systems. In the present paper, we establish the existence of such cocycles that $\…

math.DS2021★ 2 cited

Stable local dynamics: expansion, quasi-conformality and ergodicity

Abbas Fakhari, Meysam Nassiri, Hesam Rajabzadeh

In this paper, we study stable ergodicity of the action of groups of diffeomorphisms on smooth manifolds. Such actions are known to exist only on one-dimensional manifolds. The aim…

math.DS2013★ 15 cited

Robust minimality of iterated function systems with two generators

Ale Jan Homburg, Meysam Nassiri

We prove that any compact manifold without boundary admits a pair of diffeomorphisms that generates robustly minimal dynamics. We apply the results to the construction of ble…

math.DS2012★ 34 cited

Prime ends rotation numbers and periodic points

Andres Koropecki, Patrice Le Calvez, Meysam Nassiri

We study the problem of existence of a periodic point in the boundary of an invariant domain for a surface homeomorphism. In the area-preserving setting, a complete classification…

math.DS2011★ 38 cited

Robust Transitivity in Hamiltonian Dynamics

Meysam Nassiri, Enrique R. Pujals

A goal of this work is to study the dynamics in the complement of KAM tori with focus on non-local robust transitivity. We introduce open sets () of symp…

math.DS2009★ 19 cited

Transitivity of generic semigroups of area-preserving surface diffeomorphisms

Andres Koropecki, Meysam Nassiri

We prove that the action of the semigroup generated by a generic pair of area-preserving diffeomorphisms of a compact orientable surface is transitive.