Research articles:
Preprints/ Selected Publications
 Renormalization conjecture and rigidity theory for circle diffeomorphisms with a break
with K. Khanin, GAFA 24 (2014), 20022028. [preprint (pdf)]
 C1rigidity of circle diffeomorphisms with breaks for almost all irrational rotation numbers
with K. Khanin, submitted. [preprint (pdf)]
 Absence of robust rigidity for circle homeomorphisms with breaks
with K. Khanin, Ann. Inst. H. Poincaré Anal. Non Linéaire, 30(3) (2013), 385399. [preprint (pdf)]
 Reducibility of skewproduct systems with multidimensional Brjuno base flows
Discrete and Continuous and Dynamical Systems A 29 (2011), 261283. [preprint (pdf)]
 A renormalization approach to lowerdimensional tori with Brjuno frequency vectors
with H. Koch, Journal of Differential Equations 249 (2010), 19862004. [preprint (pdf)]
 A renormalization group approach to quasiperiodic motion with Brjuno frequencies
with H. Koch, Ergodic Theory and Dynamical Systems 30 (2010), 11311146. [preprint (pdf)]
 Renormalization of vector fields and Diophantine invariant tori
with H. Koch, Ergodic Theory and Dynamical Systems 28 (2008), 15591585. [preprint (pdf)]
 Renormalization of Hamiltonians for Diophantine frequency vectors and KAM tori
Nonlinearity 18 (2005), 25132544. [preprintI preprintII (pdf)]
