Publications and Preprints

• Y. Deng, A. D. Ionescu, and F. Pusateri, Local well-posedness of wave kinetic equations associated to water waves. Preprint (2026).
• A. D. Ionescu and Q.-H. Nguyen, Nonlinear Landau damping for the unconfined Vlasov-Poisson system in 2D. Preprint (2026), arXiv:2609.28251.
• A. D. Ionescu, H. Jia, and S. Palasek, On the non-uniqueness of solutions of the axi-symmetric swirl-free Navier-Stokes equations, I. Preprint (2026), arXiv:2606.07501.
• A. Constantin and A. D. Ionescu, Energy-enstrophy balance and the evolving shape of Jupiter’s Great Red Spot. Preprint (2025).
• Y. Deng, A. D. Ionescu, and F. Pusateri, On the wave turbulence theory of 2D gravity waves, II: propagation of randomness. Preprint (2025), arXiv:2504.14304.
• A. D. Ionescu, B. Pausader, X. Wang, and K. Widmayer, Nonlinear Landau damping and wave operators in sharp Gevrey spaces. Preprint (2024), arXiv:2405.04473.
• J. Gómez-Serrano, A. D. Ionescu, and J. Park, Quasiperiodic solutions of the generalized SQG equation. Annals of Mathematics Studies 222. Princeton University Press, Princeton, NJ, 2026, xi + 358 pp.
• Y. Deng, A. D. Ionescu, and F. Pusateri, On the wave turbulence theory of 2D gravity waves, I: deterministic energy estimates. Communications on Pure and Applied Mathematics 78, 211–322 (2025).
• A. D. Ionescu, S. Iyer, and H. Jia, On the stability of shear flows in bounded channels, II: non-monotonic shear flows. Vietnam Journal of Mathematics 52 (Special Issue in honor of Carlos Kenig), 851–882 (2024).
• A. D. Ionescu and H. Jia, On the stability of shear flows in bounded channels, I: monotonic shear flows. Vietnam Journal of Mathematics 52 (Special Issue in honor of Carlos Kenig), 829–849 (2024).
• A. D. Ionescu, B. Pausader, X. Wang, and K. Widmayer, Nonlinear Landau damping for the Vlasov-Poisson system in ℝ³: the Poisson equilibrium. Annals of PDE 10, Paper No. 2, 78 pp. (2024).
• A. D. Ionescu and H. Jia, On the nonlinear stability of shear flows and vortices. Proceedings of the International Congress of Mathematicians 2022, Volume 5, 3776–3799, EMS Press, Berlin (2023).
• A. D. Ionescu, A. Magyar, M. Mirek, and T. Z. Szarek, Polynomial sequences in discrete nilpotent groups of step 2. Advanced Nonlinear Studies 23 (Special Issue in honor of D. Jerison), Paper No. 20230085, 24 pp. (2023).
• A. D. Ionescu, B. Pausader, X. Wang, and K. Widmayer, On the stability of homogeneous equilibria in the Vlasov-Poisson system on ℝ³. Classical and Quantum Gravity 40 (Focus Issue on the Mathematics of Gravitation in the Non-Vacuum Regime), 185007 (2023).
• A. D. Ionescu, A. Magyar, M. Mirek, and T. Z. Szarek, Polynomial averages and pointwise ergodic theorems on nilpotent groups. Inventiones Mathematicae 231, 1023–1140 (2023).
• A. D. Ionescu and H. Jia, Nonlinear inviscid damping near monotonic shear flows. Acta Mathematica 230, 321–399 (2023).
• A. D. Ionescu and H. Jia, Linear vortex symmetrization: the spectral density function. Archive for Rational Mechanics and Analysis 246, 61–137 (2022).
• A. D. Ionescu, B. Pausader, X. Wang, and K. Widmayer, On the asymptotic behavior of solutions to the Vlasov-Poisson system. International Mathematics Research Notices 2022, 8865–8889 (2022).
• A. D. Ionescu and H. Jia, Axi-symmetrization near point vortex solutions for the 2D Euler equation. Communications on Pure and Applied Mathematics 75, 818–891 (2022).
• A. D. Ionescu and B. Pausader, The Einstein-Klein-Gordon Coupled System: Global Stability of the Minkowski Solution. Annals of Mathematics Studies 213. Princeton University Press, Princeton, NJ (2022), ix + 296 pp.
• C. Fefferman, A. D. Ionescu, T. Tao, and S. Wainger, Analysis and applications: the mathematical work of Elias Stein. Bulletin of the American Mathematical Society (New Series) 57, 523–594 (2020).
• A. D. Ionescu and B. Pausader, Global regularity of solutions of the Einstein-Klein-Gordon system: a review. Quarterly of Applied Mathematics 78, 277–303 (2020).
• P. Germain, A. D. Ionescu, and M. B. Tran, Optimal local well-posedness theory for the kinetic wave equation. Journal of Functional Analysis 279, 108570 (2020).
• A. D. Ionescu and H. Jia, Inviscid damping near the Couette flow in a channel. Communications in Mathematical Physics 374, 2015–2096 (2020).
• A. D. Ionescu and F. Pusateri, Long-time existence for multi-dimensional periodic water waves. Geometric and Functional Analysis 29, 811–870 (2019).
• D. Córdoba, J. Gómez-Serrano, and A. D. Ionescu, Global solutions for the generalized SQG patch equation. Archive for Rational Mechanics and Analysis 233, 1211–1251 (2019).
• A. D. Ionescu and B. Pausader, On the global regularity for a Wave-Klein-Gordon coupled system. Acta Mathematica Sinica (English Series) 35 (Special Issue in honor of Carlos Kenig), 933–986 (2019).
• A. D. Ionescu and V. Lie, Long term regularity of the one-fluid Euler-Maxwell system in 3D with vorticity. Advances in Mathematics 325, 719–769 (2018).
• A. D. Ionescu and F. Pusateri, Recent advances on the global regularity for irrotational water waves. Philosophical Transactions of the Royal Society A 376, 20170089, 28 pp. (2018).
• A. D. Ionescu and F. Pusateri, Global regularity for 2D water waves with surface tension. Memoirs of the American Mathematical Society 256, Memo 1227 (2018), v + 124 pp.
• Y. Deng, A. D. Ionescu, B. Pausader, and F. Pusateri, Global solutions of the gravity-capillary water-wave system in three dimensions. Acta Mathematica 219, 213–402 (2017).
• Y. Deng, A. D. Ionescu, and B. Pausader, The Euler–Maxwell system for electrons: global solutions in 2D. Archive for Rational Mechanics and Analysis 225, 771–871 (2017).
• Y. Guo, A. D. Ionescu, and B. Pausader, Global solutions of the Euler-Maxwell two-fluid system in 3D. Proceedings of the Sixth International Congress of Chinese Mathematicians. Vol. I, 79–93, Advanced Lectures in Mathematics (ALM) 36, Int. Press, 2017.
• A. D. Ionescu and F. Pusateri, Global analysis of a model for capillary water waves in 2D. Communications on Pure and Applied Mathematics 69, 2015–2071 (2016).
• C. Fefferman, A. D. Ionescu, and V. Lie, On the absence of “splash” singularities in the case of two-fluid interfaces. Duke Mathematical Journal 165, 417–462 (2016).
• I. Bejenaru, A. D. Ionescu, C. E. Kenig, and D. Tataru, Equivariant Schrödinger maps in two spatial dimensions: the H² target. Kyoto Journal of Mathematics 56, 283–323 (2016).
• Y. Guo, A. D. Ionescu, and B. Pausader, Global solutions of the Euler–Maxwell two-fluid system in 3D. Annals of Mathematics (2) 183, 377–498 (2016).
• A. D. Ionescu and S. Klainerman, Rigidity results in General Relativity: a review. Surveys in Differential Geometry 20, 123–156 (2015).
• A. D. Ionescu and S. Klainerman, On the global stability of the wave-map equation in Kerr spaces with small angular momentum. Annals of PDE 1, Article 1 (2015).
• A. D. Ionescu and F. Pusateri, Global solutions for the gravity water waves system in 2D. Inventiones Mathematicae 199, 653–804 (2015).
• Y. Guo, A. D. Ionescu, and B. Pausader, Global solutions of certain fluid models in 3D. Journal of Mathematical Physics 55, 123102 (2014).
• S. Alexakis, A. D. Ionescu, and S. Klainerman, Rigidity of stationary black holes with small angular momentum on the horizon. Duke Mathematical Journal 163, 2603–2615 (2014).
• A. D. Ionescu and F. Pusateri, Nonlinear fractional Schrödinger equations in one dimension. Journal of Functional Analysis 266, 139–176 (2014).
• A. D. Ionescu and B. Pausader, Global solutions of quasilinear systems of Klein–Gordon equations in 3D. Journal of the European Mathematical Society 16, 2355–2431 (2014).
• A. D. Ionescu, A. Magyar, and S. Wainger, Averages along polynomial sequences in discrete nilpotent groups: singular Radon transforms. In Advances in analysis: the legacy of Elias M. Stein, Princeton Mathematical Series 50, 146–188 (2014).
• I. Bejenaru, A. D. Ionescu, C. E. Kenig, and D. Tataru, Equivariant Schrödinger maps in two spatial dimensions. Duke Mathematical Journal 162, 1967–2025 (2013).
• A. D. Ionescu and B. Pausader, The Euler-Poisson system in 2D: global stability of the constant equilibrium solution. International Mathematics Research Notices 2013, 761–826 (2013).
• A. D. Ionescu and S. Klainerman, On the local extension of Killing vector-fields in Ricci flat manifolds. Journal of the American Mathematical Society 26, 563–593 (2013).
• A. D. Ionescu and B. Pausader, The energy-critical defocusing NLS on 𝕋³. Duke Mathematical Journal 161, 1581–1612 (2012).
• A. D. Ionescu and B. Pausader, Global well-posedness of the energy-critical defocusing NLS on ℝ × 𝕋³. Communications in Mathematical Physics 312, 781–831 (2012).
• A. D. Ionescu, B. Pausader, and G. Staffilani, On the global well-posedness of energy-critical Schrödinger equations in curved spaces. Analysis & PDE 5, 705–746 (2012).
• I. Bejenaru, A. D. Ionescu, C. E. Kenig, and D. Tataru, Global Schrödinger maps in dimensions d ≥ 2: small data in the critical Sobolev spaces. Annals of Mathematics 173, 1443–1506 (2011).
• I. Bejenaru, A. D. Ionescu, and C. E. Kenig, On the stability of certain spin models in 2+1 dimensions. The Journal of Geometric Analysis 21, 1–39 (2011).
• S. Herr, A. D. Ionescu, C. E. Kenig, and H. Koch, A para-differential renormalization technique for nonlinear dispersive equations. Communications in Partial Differential Equations 35, 1827–1875 (2010).
• S. Alexakis, A. D. Ionescu, and S. Klainerman, Uniqueness of smooth stationary black holes in vacuum: small perturbations of the Kerr spaces. Communications in Mathematical Physics 299, 89–127 (2010).
• S. Alexakis, A. D. Ionescu, and S. Klainerman, Hawking’s local rigidity theorem without analyticity. Geometric and Functional Analysis 20, 845–869 (2010).
• A. D. Ionescu and G. Staffilani, Semilinear Schrödinger flows on hyperbolic spaces: scattering in H¹. Mathematische Annalen 345, 133–158 (2009).
• A. D. Ionescu and S. Klainerman, On the uniqueness of smooth, stationary black holes in vacuum. Inventiones Mathematicae 175, 25–102 (2009).
• A. D. Ionescu and S. Klainerman, Uniqueness results for ill posed characteristic problems in curved space-times. Communications in Mathematical Physics 285, 873–900 (2009).
• 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 Schrödinger maps in dimensions d ≥ 4. Advances in Mathematics 215, 263–291 (2007).
• A. D. Ionescu and C. E. Kenig, Low-regularity Schrödinger maps, II: global well-posedness in dimensions d ≥ 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 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, 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, Local and global well-posedness of periodic KP-I equations. In Mathematical Aspects of Nonlinear Dispersive Equations, Princeton University Press, 181–212 (2007).
• A. D. Ionescu and C. E. Kenig, Low-regularity Schrödinger maps. Differential and Integral Equations 19, 1271–1300 (2006).
• 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, Uniqueness properties of solutions of Schrödinger 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 and C. E. Kenig, Well-posedness and local smoothing of solutions of Schrödinger equations. Mathematical Research Letters 12, 193–205 (2005).
• A. D. Ionescu, Rearrangement inequalities on semisimple Lie groups. Mathematische Annalen 332, 739–758 (2005).
• A. D. Ionescu and C. E. Kenig, L^p Carleman inequalities and uniqueness of solutions of nonlinear Schrödinger 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 Schrödinger 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, Fourier integral operators on noncompact symmetric spaces of real rank one. Journal of Functional Analysis 174, 274–300 (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, A maximal operator and a covering lemma on non-compact symmetric spaces. Mathematical Research Letters 7, 83–93 (2000).
• 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, Real-variable theory and Fourier integral operators on semisimple Lie groups and symmetric spaces of real rank one. Ph.D. thesis, Princeton University (1999).

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