World's Best Scientists 2026 revealed!
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Mathematics
Taiwan
2026

D-Index & Metrics

Mathematics

D-Index
37
Citations
5964
World Ranking
2494
National Ranking
11

Computer Science

D-Index
37
Citations
5936
World Ranking
10746
National Ranking
96

Gerard J. Chang 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 Gerard J. Chang 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: 228 publications — 72nd percentile

72% of scientists in this discipline score the same or lower.

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

Gerard J. Chang 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 Gerard J. Chang 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.

Research.com Recognitions

  • 2026 - Research.com Mathematics in Taiwan Leader Award
  • 2025 - Research.com Mathematics in Taiwan Leader Award

Overview

What is he best known for?

The fields of study he is best known for:

  • Combinatorics
  • Discrete mathematics
  • Graph theory

His scientific interests lie mostly in Combinatorics, Discrete mathematics, Graph, Chordal graph and Domination analysis. Gerard J. Chang performs multidisciplinary study on Combinatorics and Cube in his works. Discrete mathematics and Upper and lower bounds are frequently intertwined in his study.

His research in Chordal graph intersects with topics in Strongly chordal graph, Graph theory and Bipartite graph. His work in Vertex tackles topics such as Bound graph which are related to areas like Integer. His Interval graph research incorporates elements of Indifference graph and Steiner tree problem.

His most cited work include:

  • The $L(2,1)$-Labeling Problem on Graphs (309 citations)
  • The k-Domination and k-Stability Problems on Sun-Free Chordal Graphs (133 citations)
  • On L(d, 1) -labelings of graphs (113 citations)

What are the main themes of his work throughout his whole career to date?

The scientist’s investigation covers issues in Combinatorics, Discrete mathematics, Graph, Chordal graph and Bipartite graph. His Combinatorics research focuses on Upper and lower bounds and how it relates to Integer. Maximal independent set, Pathwidth, Split graph, Conjecture and Bound graph are among the areas of Discrete mathematics where Gerard J. Chang concentrates his study.

His work in Maximal independent set covers topics such as Independent set which are related to areas like Dominating set. His work carried out in the field of Graph brings together such families of science as Disjoint sets, Chromatic scale and Graph theory. His research ties Strongly chordal graph and Chordal graph together.

He most often published in these fields:

  • Combinatorics (92.38%)
  • Discrete mathematics (78.03%)
  • Graph (35.43%)

What were the highlights of his more recent work (between 2010-2018)?

  • Combinatorics (92.38%)
  • Discrete mathematics (78.03%)
  • Graph (35.43%)

In recent papers he was focusing on the following fields of study:

Gerard J. Chang focuses on Combinatorics, Discrete mathematics, Graph, Upper and lower bounds and Bipartite graph. His study in Combinatorics focuses on Vertex, Domination analysis, Vertex, Planar graph and Conjecture. His study in Edge coloring, Bound graph, Graph power, Dominating set and Connectivity is done as part of Discrete mathematics.

His research investigates the connection between Graph power and topics such as Neighbourhood that intersect with problems in Null graph, Complement graph and Symmetric graph. His Graph research integrates issues from Tuple, Partition, Labeling Problem and Real number. His Upper and lower bounds study combines topics from a wide range of disciplines, such as Sequence, Subsequence, Element, Abelian group and Integer.

Between 2010 and 2018, his most popular works were:

  • Reliabilities of Consecutive-k Systems (91 citations)
  • Roman domination on strongly chordal graphs (58 citations)
  • A characterization of graphs with rank 4 (52 citations)

In his most recent research, the most cited papers focused on:

  • Combinatorics
  • Discrete mathematics
  • Graph theory

His primary scientific interests are in Combinatorics, Discrete mathematics, Graph, Vertex and Bipartite graph. All of his Combinatorics and Domination analysis, Chordal graph, Vertex, Planar graph and Connectivity investigations are sub-components of the entire Combinatorics study. His Vertex research is multidisciplinary, incorporating elements of Arithmetic and Real number.

Gerard J. Chang is studying Conjecture, which is a component of Discrete mathematics. The study incorporates disciplines such as Cartesian product, Equitable coloring, Chromatic threshold, Minimum weight and Upper and lower bounds in addition to Vertex. He has included themes like Perfect graph, Maximal independent set, Indifference graph, Independent set and Block graph in his Split graph study.

Best Publications

  • The $L(2,1)$-Labeling Problem on Graphs

    Gerard J. Chang;David Kuo

  • The k-Domination and k-Stability Problems on Sun-Free Chordal Graphs

    Gerard J. Chang;George L. Nemhauser

  • Reliabilities of Consecutive-k Systems

    Gerard J. Chang;Frank Hwang;Lirong Cui

  • On L(d, 1) -labelings of graphs

    Gerard J. Chang;Wen-Tsai Ke;David Kuo;Daphne D.-F. Liu

  • Note: Power domination in graphs

    Min Zhao;Liying Kang;Gerard J. Chang

  • k -tuple domination in graphs

    Chung-Shou Liao;Gerard J. Chang

  • Diagnosabilities of regular networks

    Guey-Yun Chang;G.J. Chang;Gen-Huey Chen

  • Algorithmic Aspects of Domination in Graphs

    Gerard Jennhwa Chang

  • Circular chromatic numbers of Mycielski's graphs

    Gerard J. Chang;Lingling Huang;Xuding Zhu

  • Quasi-threshold graphs

    Jing-Ho Yan;Jer-Jeong Chen;Gerard J. Chang

  • Roman domination on strongly chordal graphs

    Chun-Hung Liu;Gerard J. Chang

  • Rainbow domination on trees

    Gerard J. Chang;Jiaojiao Wu;Xuding Zhu

  • Node-disjoint paths in hierarchical hypercube networks

    Ruei-Yu Wu;Gen-Huey Chen;Yu-Liang Kuo;Gerard J. Chang

  • On minimum rank and zero forcing sets of a graph

    Liang Hao Huang;Gerard J. Chang;Hong Gwa Yeh

  • A characterization of graphs with rank 4

    Gerard J. Chang;Liang Hao Huang;Hong Gwa Yeh

  • Distance-two labelings of graphs

    Gerard J. Chang;Changhong Lu

  • Reliabilities for (n,f,k) systems

    Gerard J. Chang;Lirong Cui;Frank K. Hwang

  • A characterization of graphs with rank 5

    Gerard J. Chang;Liang Hao Huang;Hong Gwa Yeh

  • Algorithmic aspects of neighborhood numbers

    Gerard J. Chang;Martin Farber;Zsolt Tuza

  • Labeling algorithms for domination problems in sun-free chordal graphs

    G. J. Chang

Frequent Co-Authors

Frank K. Hwang
Frank K. Hwang National Yang Ming Chiao Tung University
Lirong Cui
Lirong Cui Beijing Institute of Technology
Xuding Zhu
Xuding Zhu Zhejiang Normal University
C. Pandu Rangan
C. Pandu Rangan Indian Institute of Technology Madras
André Raspaud
André Raspaud University of Bordeaux
Venkatesan Guruswami
Venkatesan Guruswami University of California, Berkeley
George L. Nemhauser
George L. Nemhauser Georgia Institute of Technology
Zsolt Tuza
Zsolt Tuza University of Pannonia
Stephen T. Hedetniemi
Stephen T. Hedetniemi Clemson University
Bhaskar DasGupta
Bhaskar DasGupta University of Illinois at Chicago

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