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D-Index & Metrics

Mathematics

D-Index
37
Citations
8606
World Ranking
2438
National Ranking
11

Ole Christensen 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 Ole Christensen 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: 83 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: 195 publications — 60th percentile

60% of scientists in this discipline score the same or lower.

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

Ole Christensen 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 Ole Christensen 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: 138 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: 37 D-Index — 33rd percentile

33% of scientists in this discipline score the same or lower.

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

Overview

Ole Christensen is affiliated with the Technical University of Denmark in Denmark. Their research primarily spans the field of Mathematics, with significant contributions to Applied Mathematics and Mathematical Physics.

The scientist's work extensively covers topics including:

  • Mathematical Analysis and Transform Methods
  • Algebraic and Geometric Analysis
  • Holomorphic and Operator Theory
  • Image and Signal Denoising Methods
  • Advanced Harmonic Analysis Research
  • Advanced Algebra and Geometry
  • Spectral Theory in Mathematical Physics

Ole Christensen frequently publishes in various mathematical journals and venues. Notable publication venues include:

  • Canadian Mathematical Bulletin
  • arXiv (Cornell University)
  • Sampling Theory Signal Processing and Data Analysis
  • Applied and Computational Harmonic Analysis
  • Studia Mathematica

Some of the recent papers authored by Ole Christensen are:

  • Explicit construction of frames and pairs of dual frames on locally compact abelian groups, 2021, Sampling Theory Signal Processing and Data Analysis
  • The mystery of Carleson frames, 2024, Applied and Computational Harmonic Analysis
  • Approximate frame representations via iterated operator systems, 2021, Studia Mathematica
  • Frames and generalized operator orbits, 2023, Sampling Theory Signal Processing and Data Analysis
  • The unitary extension principle for locally compact abelian groups with co-compact subgroups, 2020, Proceedings of the American Mathematical Society

Ole Christensen collaborates with other researchers in their field. Frequent coauthors include:

  • Marzieh Hasannasab
  • Rae Young Kim
  • Hong Oh Kim
  • Say Song Goh
  • Friedrich Philipp

Best Publications

  • An introduction to frames and Riesz bases

    Ole Christensen

  • Frames and Bases: An Introductory Course

    Ole Christensen

  • Perturbation of Operators and Applications to Frame Theory

    Peter G. Cazassa;Ole Christensen

  • Density of Gabor Frames

    Ole Christensen;Baiqiao Deng;Christopher Heil

  • Oblique dual frames and shift-invariant spaces

    O Christensen;Y.C Eldar

  • Frames, Riesz bases, and discrete Gabor/wavelet expansions

    Ole Christensen

  • P-FRAMES IN SEPARABLE BANACH SPACES

    Ole W. Christensen;Diana T. Stoeva

  • Perturbation of Banach Frames and Atomic Decomposition

    Ole Christensen;C. Heil

  • FRAME EXPANSIONS IN SEPARABLE BANACH SPACES

    Pete Casazza;Ole Christensen;Diana T. Stoeva

  • A Paley-Wiener theorem for frames

    Ole Christensen

  • Frames and pseudo-inverses

    O. Christensen

  • Weyl-Heisenberg frames for subspaces of L^2(R)

    Peter G. Casazza;Ole Christensen

  • Frames and the Feichtinger conjecture

    Peter G. Casazza;Ole Christensen;Alexander M. Lindner;Roman Vershynin

  • Frames and Bases

    Ole Christensen

  • Pairs of Dual Gabor Frame Generators with Compact Support and Desired Frequency Localization

    Ole Christensen

  • Extensions of Bessel sequences to dual pairs of frames

    Ole Christensen;Hong Oh Kim;Rae Young Kim

  • Frames containing a Riesz basis and preservation of this property under perturbations

    Peter G. Casazza;Ole Christensen

  • Approximately dual frames in Hilbert spaces and applications to Gabor frames

    Ole Christensen;Richard S. Laugesen

  • Approximation of the Inverse Frame Operator and Applications to Gabor Frames

    Peter G. Casazza;Ole Christensen

  • The finite section method and problems in frame theory

    Ole Christensen;Thomas Strohmer

  • Weyl-Heisenberg frames, translation invariant systems and the Walnut representation

    Peter G. Casazza;Ole Christensen;A.J.E.M. Janssen

Frequent Co-Authors

Peter G. Casazza
Peter G. Casazza University of Missouri
Yonina C. Eldar
Yonina C. Eldar Weizmann Institute of Science
Thomas Strohmer
Thomas Strohmer University of California, Davis
Hans G. Feichtinger
Hans G. Feichtinger University of Vienna
Ulrik Birk Henriksen
Ulrik Birk Henriksen Technical University of Denmark
Christopher Heil
Christopher Heil Georgia Institute of Technology
Nigel J. Kalton
Nigel J. Kalton University of Missouri
Roman Vershynin
Roman Vershynin University of California, Irvine

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