World's Best Scientists 2026 revealed!

D-Index & Metrics

Mathematics

D-Index
51
Citations
9020
World Ranking
1036
National Ranking
482

Engineering and Technology

D-Index
51
Citations
9001
World Ranking
3904
National Ranking
1135

Raytcho Lazarov 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 Raytcho Lazarov 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: 158 publications — 42nd percentile

42% of scientists in this discipline score the same or lower.

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

Raytcho Lazarov 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 Raytcho Lazarov 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: 51 D-Index — 73rd percentile

73% of scientists in this discipline score the same or lower.

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

Overview

Raytcho Lazarov was affiliated with Texas A&M University in the United States. Their research spanned multiple disciplines, primarily focusing on mathematics, engineering, and computer science. Within these fields, their work concentrated on computational theory and mathematics, numerical analysis, applied mathematics, mechanics of materials, and computational mechanics.

Their main topics of research included advanced mathematical modeling in engineering, differential equations and numerical methods, differential equations and boundary problems, composite material mechanics, advanced numerical methods in computational mathematics, fractional differential equations solutions, and numerical methods in inverse problems.

The scientist contributed to several publication venues, with notable activity in the following:

  • Publication Server of Kaiserslautern University of Technology (Kaiserslautern University of Technology)
  • Journal of Computational Physics
  • Fractional Calculus and Applied Analysis
  • Computational Methods in Applied Mathematics
  • arXiv (Cornell University)

Their recent papers included:

  • "Analysis of numerical methods for spectral fractional elliptic equations based on the best uniform rational approximation," 2020, Journal of Computational Physics
  • "An efficient approach for upscaling properties of composite materials with high contrast of coefficients," 2022, Publication Server of Kaiserslautern University of Technology (Kaiserslautern University of Technology)
  • "A Survey on Numerical Methods for Spectral Space-Fractional Diffusion Problems," 2020, Fractional Calculus and Applied Analysis
  • "A Graph-Laplacian approach for calculating the effective thermal conductivity of complicated fiber geometries," 2022, Publication Server of Kaiserslautern University of Technology (Kaiserslautern University of Technology)
  • "On two-level preconditioners for flow in porous media," 2022, Publication Server of Kaiserslautern University of Technology (Kaiserslautern University of Technology)

The scientist frequently collaborated with other researchers including:

  • Stanislav Harizanov
  • Svetozar Margenov
  • Oleg Iliev
  • Iryna Rybak
  • J. Willems

Best Publications

  • Unified Hybridization of Discontinuous Galerkin, Mixed, and Continuous Galerkin Methods for Second Order Elliptic Problems

    Bernardo Cockburn;Jayadeep Gopalakrishnan;Raytcho Lazarov

  • First-order system least squares for second-order partial differential equations: part I

    Z. Cai;R. Lazarov;T. A. Manteuffel;S. F. McCormick

  • An analysis of the L1 scheme for the subdiffusion equation with nonsmooth data

    Bangti Jin;Raytcho Lazarov;Zhi Zhou

  • Error Estimates for a Semidiscrete Finite Element Method for Fractional Order Parabolic Equations

    Bangti Jin;Raytcho D. Lazarov;Zhi Zhou

  • Finite volume methods for convection-diffusion problems

    R. D. Lazarov;Ilya D. Mishev;P. S. Vassilevski

  • Two Fully Discrete Schemes for Fractional Diffusion and Diffusion-Wave Equations with Nonsmooth Data

    Bangti Jin;Raytcho D. Lazarov;Zhi Zhou

  • The Galerkin finite element method for a multi-term time-fractional diffusion equation

    Bangti Jin;Raytcho Lazarov;Yikan Liu;Zhi Zhou

  • Least-squares mixed finite elements for second-order elliptic problems

    A. I. Pehlivanov;G. F. Carey;R. D. Lazarov

  • A least-squares approach based on a discrete minus one inner product for first order systems

    James H. Bramble;Raytcho D. Lazarov;Joseph E. Pasciak

  • Superconvergence of the velocity along the Gauss lines in mixed finite element methods

    R. E. Ewing;R. D. Lazarov;J. Wang

  • Numerical methods for time-fractional evolution equations with nonsmooth data: A concise overview

    Bangti Jin;Raytcho Lazarov;Zhi Zhou

  • Finite volume element approximations of nonlocal reactive flows in porous media

    Richard Ewing;Raytcho Lazarov;Yanping Lin

  • Variational formulation of problems involving fractional order differential operators

    Bangti Jin;Bangti Jin;Raytcho D. Lazarov;Joseph E. Pasciak;William Rundell

  • Local refinement techniques for elliptic problems on cell-centered grids. I. Error analysis

    R. E. Ewing;R. D. Lazarov;P. S. Vassilevski

  • Robust domain decomposition preconditioners for abstract symmetric positive definite bilinear forms

    Yalchin Efendiev;Juan Galvis;Raytcho Lazarov;Joerg Willems

  • An analysis of the Rayleigh---Stokes problem for a generalized second-grade fluid

    Emilia Bazhlekova;Bangti Jin;Raytcho Lazarov;Zhi Zhou

  • Multiplier Spaces for the Mortar Finite Element Method in Three Dimensions

    Chisup Kim;Raytcho D. Lazarov;Joseph E. Pasciak

  • Error analysis of semidiscrete finite element methods for inhomogeneous time-fractional diffusion

    Bangti Jin;Raytcho Lazarov;Joseph Pasciak;Zhi Zhou

  • Error estimates for a finite volume element method for parabolic equations in convex polygonal domains

    P Chatzipantelidis;R. D. Lazarov;Vidar Thomee

  • Error Analysis of a Finite Element Method for the Space-Fractional Parabolic Equation

    Bangti Jin;Raytcho D. Lazarov;Joseph E. Pasciak;Zhi Zhou

  • NUMERICAL STUDY OF TWO-GRID PRECONDITIONERS FOR 1-D ELLIPTIC PROBLEMS WITH HIGHLY OSCILLATING DISCONTINUOUS COEFFICIENTS

    O. Iliev;R. Lazarov;J. Willems

  • Higher-order finite element methods.

    Raytcho D. Lazarov

Frequent Co-Authors

Richard E. Ewing
Richard E. Ewing Texas A&M University
Bangti Jin
Bangti Jin Chinese University of Hong Kong
Joseph E. Pasciak
Joseph E. Pasciak Texas A&M University
Zhi Zhou
Zhi Zhou Hong Kong Polytechnic University
Yalchin Efendiev
Yalchin Efendiev Texas A&M University
Panayot S. Vassilevski
Panayot S. Vassilevski Lawrence Livermore National Laboratory
Chris R. Johnson
Chris R. Johnson University of Utah
Vidar Thomée
Vidar Thomée Chalmers University of Technology
Stanimire Tomov
Stanimire Tomov University of Tennessee at Knoxville
Graham F. Carey
Graham F. Carey The University of Texas at Austin

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