World's Best Scientists 2026 revealed!
Alexandru D. Ionescu

Alexandru D. Ionescu

D-Index & Metrics

Mathematics

D-Index
41
Citations
4953
World Ranking
1963
National Ranking
829

Alexandru D. Ionescu publication distribution in Mathematics in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Mathematics in 2026. The highlighted bar marks where Alexandru D. Ionescu sits on this spectrum.

42–46 publications: 3 scientists 47–51 publications: 5 scientists 52–56 publications: 7 scientists 57–61 publications: 20 scientists 62–66 publications: 14 scientists 67–71 publications: 25 scientists 72–76 publications: 19 scientists 77–81 publications: 35 scientists 82–86 publications: 50 scientists 87–91 publications: 60 scientists 92–96 publications: 86 scientists 97–101 publications: 84 scientists 102–106 publications: 83 scientists 107–111 publications: 90 scientists 112–116 publications: 99 scientists 117–121 publications: 90 scientists 122–126 publications: 91 scientists 127–131 publications: 109 scientists 132–136 publications: 110 scientists 137–141 publications: 98 scientists 142–146 publications: 112 scientists 147–151 publications: 102 scientists 152–156 publications: 88 scientists 157–161 publications: 106 scientists 162–166 publications: 82 scientists 167–171 publications: 102 scientists 172–176 publications: 77 scientists 177–181 publications: 81 scientists 182–186 publications: 78 scientists 187–191 publications: 71 scientists 192–196 publications: 92 scientists 197–201 publications: 64 scientists 202–206 publications: 69 scientists 207–211 publications: 64 scientists 212–216 publications: 62 scientists 217–221 publications: 58 scientists 222–226 publications: 53 scientists 227–231 publications: 50 scientists 232–236 publications: 46 scientists 237–241 publications: 46 scientists 242–246 publications: 46 scientists 247–251 publications: 43 scientists 252–256 publications: 29 scientists 257–261 publications: 45 scientists 262–266 publications: 30 scientists 267–271 publications: 33 scientists 272–276 publications: 34 scientists 277–281 publications: 30 scientists 282–286 publications: 31 scientists 287–291 publications: 21 scientists 292–296 publications: 34 scientists 297–301 publications: 26 scientists 302–306 publications: 10 scientists 307–311 publications: 17 scientists 312–316 publications: 23 scientists 317–321 publications: 13 scientists 322–326 publications: 16 scientists 327–331 publications: 26 scientists 332–336 publications: 13 scientists 337–341 publications: 13 scientists 342–346 publications: 16 scientists 347–351 publications: 17 scientists 352–356 publications: 12 scientists 357–361 publications: 18 scientists 362–366 publications: 18 scientists 367–371 publications: 9 scientists 372–376 publications: 11 scientists 377–381 publications: 8 scientists 382–386 publications: 8 scientists 387–391 publications: 9 scientists 392–396 publications: 9 scientists 397–401 publications: 8 scientists 402–406 publications: 11 scientists 407–411 publications: 6 scientists 412–416 publications: 6 scientists 417–421 publications: 9 scientists 422–426 publications: 8 scientists 427–431 publications: 5 scientists 432–436 publications: 8 scientists 437–441 publications: 8 scientists 442–446 publications: 4 scientists 447–451 publications: 4 scientists 452–456 publications: 4 scientists 457–461 publications: 2 scientists 462–466 publications: 2 scientists 467–471 publications: 4 scientists 472–476 publications: 3 scientists 477–481 publications: 3 scientists 482–486 publications: 6 scientists 487–491 publications: 3 scientists 492–496 publications: 5 scientists 497–501 publications: 5 scientists 502–506 publications: 1 scientists 507–511 publications: 6 scientists 512–516 publications: 4 scientists 517–521 publications: 1 scientists 522–526 publications: 3 scientists 527–531 publications: 1 scientists 532–536 publications: 4 scientists 537+ publications: 100 scientists
42 publications 537+

This scientist: 111 publications — 16th percentile

16% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 537 publications or more.

Alexandru D. Ionescu D-index placement in Mathematics in 2026

The chart shows the D-index (discipline H-index) distribution of Mathematics scientists ranked by Research.com in 2026. The highlighted bar marks where Alexandru D. Ionescu sits on this spectrum.

30 D-Index: 174 scientists 31 D-Index: 151 scientists 32 D-Index: 174 scientists 33 D-Index: 117 scientists 34 D-Index: 136 scientists 35 D-Index: 127 scientists 36 D-Index: 145 scientists 37 D-Index: 153 scientists 38 D-Index: 150 scientists 39 D-Index: 150 scientists 40 D-Index: 137 scientists 41 D-Index: 136 scientists 42 D-Index: 93 scientists 43 D-Index: 108 scientists 44 D-Index: 115 scientists 45 D-Index: 112 scientists 46 D-Index: 103 scientists 47 D-Index: 75 scientists 48 D-Index: 59 scientists 49 D-Index: 67 scientists 50 D-Index: 60 scientists 51 D-Index: 57 scientists 52 D-Index: 59 scientists 53 D-Index: 62 scientists 54 D-Index: 60 scientists 55 D-Index: 50 scientists 56 D-Index: 42 scientists 57 D-Index: 54 scientists 58 D-Index: 50 scientists 59 D-Index: 42 scientists 60 D-Index: 41 scientists 61 D-Index: 35 scientists 62 D-Index: 40 scientists 63 D-Index: 21 scientists 64 D-Index: 31 scientists 65 D-Index: 27 scientists 66 D-Index: 29 scientists 67 D-Index: 19 scientists 68 D-Index: 25 scientists 69 D-Index: 17 scientists 70 D-Index: 18 scientists 71 D-Index: 12 scientists 72 D-Index: 14 scientists 73 D-Index: 13 scientists 74 D-Index: 18 scientists 75 D-Index: 9 scientists 76 D-Index: 11 scientists 77 D-Index: 10 scientists 78 D-Index: 9 scientists 79 D-Index: 16 scientists 80 D-Index: 12 scientists 81 D-Index: 10 scientists 82 D-Index: 5 scientists 83 D-Index: 5 scientists 84 D-Index: 13 scientists 85 D-Index: 6 scientists 86+ D-Index: 99 scientists
30 D-Index 86+

This scientist: 41 D-Index — 49th percentile

49% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 86 D-Index or more.

Research.com Recognitions

  • 2018 - Fellow of the American Mathematical Society For contributions to harmonic analysis on symmetric spaces, discrete analogs of singular Radon transforms, and the mathematics of general relativity.
  • 2003 - Fellow of Alfred P. Sloan Foundation

Overview

Alexandru D. Ionescu is affiliated with Princeton University in the United States and has an extensive research portfolio in mathematics, engineering, and physics and astronomy. Their research spans several subfields, including applied mathematics, computational mechanics, mathematical physics, astronomy and astrophysics, and statistical and nonlinear physics.

Their work addresses a variety of topics such as Navier-Stokes equation solutions, fluid dynamics and turbulent flows, gas dynamics and kinetic theory, advanced mathematical physics problems, computational fluid dynamics and aerodynamics, cosmology and gravitation theories, and black holes and theoretical physics.

Among their recent publications are:

  • Nonlinear inviscid damping near monotonic shear flows, 2023, Acta Mathematica
  • Axi-symmetrization near Point Vortex Solutions for the 2D Euler Equation, 2021, Communications on Pure and Applied Mathematics
  • Nonlinear inviscid damping near monotonic shear flows, 2020, arXiv (Cornell University)
  • Linear Vortex Symmetrization: The Spectral Density Function, 2022, Archive for Rational Mechanics and Analysis
  • Nonlinear Landau Damping for the Vlasov-Poisson System in ℝ³: The Poisson Equilibrium, 2023, Annals of PDE

Frequently publishing venues include arXiv (Cornell University), Communications on Pure and Applied Mathematics, Vietnam Journal of Mathematics, Acta Mathematica, and Annals of PDE.

The scientist has collaborated often with several co-authors, notably Benoît Pausader, Hao Jia, Klaus Widmayer, Xuecheng Wang, and Ákos Magyar.

In addition to articles, Alexandru D. Ionescu has contributed to book publications through Princeton University Press, authoring works titled "The Einstein-Klein-Gordon Coupled System" published in 2022.

Awards received by the scientist include:

  • Fellow of the American Mathematical Society, 2018, for contributions to harmonic analysis on symmetric spaces, discrete analogs of singular Radon transforms, and the mathematics of general relativity
  • Fellow of Alfred P. Sloan Foundation, 2003

Best Publications

  • Global well-posedness of the Benjamin–Ono equation in low-regularity spaces

    Alexandru D. Ionescu;Carlos E. Kenig

  • Global solutions for the gravity water waves system in 2d

    Alexandru D. Ionescu;Fabio Pusateri

  • Global Schrödinger maps in dimensions $d≥ 2$: Small data in the critical Sobolev spaces

    Ioan Bejenaru;Alexandru D. Ionescu;Carlos E. Kenig;Daniel Tataru

  • Nonlinear fractional Schrödinger equations in one dimension

    Alexandru D. Ionescu;Fabio Giuseppe Pusateri

  • Global well-posedness of the KP-I initial-value problem in the energy space

    A.D. Ionescu;C.E. Kenig;D. Tataru

  • Global Well-Posedness of the Energy-Critical Defocusing NLS on \({\mathbb{R} imes \mathbb{T}^3}\)

    Alexandru D. Ionescu;Benoit Pausader

  • L^p boundedness of discrete singular Radon transforms

    Alexandru D. Ionescu;Stephen Wainger

  • On the absence of positive eigenvalues of Schrödinger operators with rough potentials

    Alexandru D. Ionescu;David Jerison

  • Global Regularity for 2d Water Waves with Surface Tension

    Alexandru D. Ionescu;Fabio Pusateri

  • The Euler–Poisson System in 2D: Global Stability of the Constant Equilibrium Solution

    Alexandru D. Ionescu;Benoit Pausader

  • Global solutions of the gravity-capillary water-wave system in three dimensions

    Yu Deng;Alexandru D. Ionescu;Benoît Pausader;Fabio Pusateri

  • Global solutions of the Euler–Maxwell two-fluid system in 3D

    Yan Guo;Alexandru D. Ionescu;Benoit Pausader

  • On the uniqueness of smooth, stationary black holes in vacuum

    Alexandru D. Ionescu;Sergiu Klainerman

  • The energy-critical defocusing NLS on ${\mathbb{T}}^{3}$

    Alexandru D. Ionescu;Benoit Pausader

  • Inviscid Damping Near the Couette Flow in a Channel

    Alexandru D. Ionescu;Hao Jia

  • Uniqueness of Smooth Stationary Black Holes in Vacuum: Small Perturbations of the Kerr Spaces

    S. Alexakis;A. D. Ionescu;S. Klainerman

  • Low-regularity Schrödinger maps, II: global well-posedness in dimensions d ≥ 3

    Alexandru D. Ionescu;Carlos E. Kenig

  • Sobolev spaces on lie manifolds and regularity for polyhedral domains

    Bernd Ammann;Alexandru D. Ionescu;Victor Nistor

  • Semilinear Schrödinger flows on hyperbolic spaces: scattering in H 1

    Alexandru D. Ionescu;Gigliola Staffilani

  • The energy-critical defocusing NLS on T^3

    A. D. Ionescu;B. Pausader

  • On the global well-posedness of energy-critical Schrodinger equations in curved spaces

    Alexandru D. Ionescu;Benoit Pausader;Gigliola Staffilani

  • Global solutions of quasilinear systems of Klein–Gordon equations in 3D

    Alexandru D. Ionescu;Benoît Pausader

  • Fourier Integral Operators on Noncompact Symmetric Spaces of Real Rank One

    Alexandru D. Ionescu

Frequent Co-Authors

Carlos E. Kenig
Carlos E. Kenig University of Chicago
Sergiu Klainerman
Sergiu Klainerman Princeton University
Daniel Tataru
Daniel Tataru University of California, Berkeley
Yan Guo
Yan Guo Brown University
Stephen Wainger
Stephen Wainger University of Wisconsin–Madison
Wilhelm Schlag
Wilhelm Schlag Yale University
James Colliander
James Colliander University of British Columbia
Charles Fefferman
Charles Fefferman Princeton University
Diego Córdoba
Diego Córdoba Institute of Mathematical Sciences

If you think any of the details on this page are incorrect, let us know.

Report an issue

We appreciate your kind effort to assist us to improve this page, it would be helpful providing us with as much detail as possible in the text box below:

Related Online Degrees & Career Pathways

For students studying Mathematics in the USA, exploring related online degrees can open diverse career pathways. One popular option is pursuing a master's degree in analytics, with many top-tier programs available. Resources like data analytics masters programs provide comprehensive information on choosing the best fit for leveraging quantitative skills in fields like business intelligence and data science.

For those interested in combining mathematical expertise with leadership abilities, online business degrees offer flexibility and accessibility. Programs listed under easiest mba programs help students find options that balance quality with manageable admissions requirements. Similarly, easiest online mba options emphasize convenience for working professionals seeking to enhance their management skills without compromising their current careers.

For advanced career advancement, especially in research or academia, pursuing a Doctor of Business Administration can be beneficial. Checking out cheapest dba online programs helps in identifying affordable pathways toward gaining expertise in leadership, strategy, and innovation.

Overall, these related degrees provide strategic opportunities for mathematics graduates to expand their skill sets and increase their employability in a competitive job market.

Best Scientists Citing Alexandru D. Ionescu

Trending Scientists

Recently Published Articles