Publications and preprints:

• I. Bejenaru, A. D. Ionescu, C. E. Kenig, and D. Tataru, Global Schr\"{o}dinger maps in dimensions $d\geq 2$: small data in the critical Sobolev spaces, Preprint 2008. pdf-file
  
• A. D. Ionescu and G. Staffilani, Semilinear Schr\"{o}dinger flows on hyperbolic spaces: scattering  in $H^1$, Preprint  2008.  pdf-file
  
• A. D. Ionescu and S. Klainerman, Uniqueness results for ill posed characteristic problems in curved space-times, Preprint 2007. pdf-file
• A. D. Ionescu and S. Klainerman, On the uniqueness of smooth, stationary black holes in vacuum, Preprint 2007. pdf-file
  
• A. D. Ionescu, C. E. Kenig, and D. Tataru, Global well-posedness of the KP-I initial-value problem in the energy space, Inventiones Mathematicae 173, 265-304 (2008).
  
• J. Colliander, A. D. Ionescu, C. E. Kenig, and G. Staffilani, Weighted low-regularity solutions of the KP-I initial-value problem, Discrete and Continuous Dynamical Systems - Series A 20, 219-258 (2008).
  
• I. Bejenaru, A. D. Ionescu, and C. E. Kenig, Global existence and uniqueness of Schr\"{o}dinger maps in dimensions $d\geq 4$, Advances in Mathematics 215, 263-291 (2007).
  
• A. D. Ionescu and C. E. Kenig, Low-regularity Schr\"{o}dinger maps, II: global well-posedness in dimensions $d\geq 3$, Communications in Mathematical Physics 271, 523-559 (2007).
  
• A. D. Ionescu and C. E. Kenig, Complex-valued solutions of the Benjamin-Ono equation, Contemporary Mathematics 428, 61-74 (2007).
  
• A. D. Ionescu, A. Magyar, E. M. Stein, and S. Wainger, Discrete Radon transforms and applications to ergodic theory, Acta Mathematica  198, 231-298, (2007).
  
• A. D. Ionescu and C. E. Kenig, Global well-posedness of the Benjamin-Ono equation in low regularity spaces, Journal of the American Mathematical Society 20, 753-798 (2007).
• A. D. Ionescu and C. E. Kenig, Local and global well-posedness of periodic KP-I equations, in Mathematical Aspects of Nonlinear Dispersive Equations, Princeton University Press (2007), 181--212.
  
• B. Ammann, A. D. Ionescu and V. Nistor, Sobolev spaces and regularity for polyhedral domains, Documenta Mathematica 11, 161-206 (2006).
  
• A. D. Ionescu and C. E. Kenig, Low-regularity Schr\"{o}dinger maps, Differential and  Integral Equations 19, 1271-1300 (2006).
• A. D. Ionescu and C. E. Kenig, Uniqueness properties of solutions of Schr\"odinger equations, Journal of Functional Analysis 232, 90-136 (2006)
  
• A. D. Ionescu and W. Schlag, Agmon-Kato-Kuroda theorems for a large class of perturbations, Duke Mathematical Journal 131, 397-440 (2006).
  
• A. D. Ionescu and S. Wainger, L^p boundedness of discrete singular Radon transforms, Journal of the American Mathematical Society 19, 357-383 (2006).
  
• A. D. Ionescu, Rearrangement inequalities on semisimple Lie groups, Mathematische Annalen 322, 739-758 (2005).
• A. D. Ionescu and C. E. Kenig, Well-posedness and local smoothing of solutions of Schr\"odinger equations, Mathematical Research Letters 12, 193-205 (2005).
  
• A. D. Ionescu and C. E. Kenig, $L^p$ Carleman inequalities and uniqueness of solutions of nonlinear Schr\"odinger equations, Acta Mathematica 193, 193--239 (2004).
• A. D. Ionescu, An endpoint estimate for the discrete spherical maximal function, Proceedings of the American Mathematical Society 132, 1411-1417 (2004).
• A. D. Ionescu and D. Jerison, On the absence of positive eigenvalues of Schrodinger operators with rough potentials, Geometric and Functional Analysis 13, 1029-1081 (2003).
• A. D. Ionescu, Singular integrals on symmetric spaces, II, Transactions of the American Mathematical Society 355, 3359-3378 (2003).
• A. D. Ionescu, Singular integrals on symmetric spaces of real rank one, Duke Mathematical Journal 114, 101-122 (2002).
• A. D. Ionescu, On the Poisson transform on symmetric spaces of real rank one, Journal of Functional Analysis 174, 513--523 (2000).
• A. D. Ionescu, A maximal operator and a covering lemma on non-compact symmetric spaces, Mathematical Research Letters 7, 83--93 (2000).
• A. D. Ionescu, An endpoint estimate for the Kunze-Stein phenomenon and related maximal operators, Annals of Mathematics 152, 259--275 (2000).
• A. D. Ionescu, Fourier integral operators on noncompact symmetric spaces of real rank one, Journal of Functional Analysis 174, 274--300 (2000).
• A. D. Ionescu, Real-variable theory and Fourier integral operators on semisimple Lie groups and symmetric spaces of real rank one, Ph. D. Thesis, Princeton University (1999). ps-file
  

This research was supported in part by NSF grants, an Alfred P. Sloan research fellowship, and a David and Lucile Packard Fellowship.