Journal rankings · indicator year 2001
Choose a field to open its ranking, or a journal to find its row in its subfield’s list.
Subfield ranking · 2001
Discrete Mathematics and Combinatorics journal rankings 2001
12 ranked journals · Subfield in Mathematics
Discrete Mathematics and Combinatorics has 12 ranked journals in 2001. The median journal has an OJR of 0.96, below the world average of 1.00, up 0.04 on 2000; Q1 starts at OJR 1.22. The top three are COMBINATORICA, Combinatorics Probability Computing, and Random Structures and Algorithms.
Ranks and citation indicators: 2001. Journal access status and listed APC: source snapshot September 23, 2026.
Journals whose main subfield sits in this category and that published at least 30 citable documents (articles, reviews and conference papers) in 1998–2000, the window the 2001 score is computed on.
The OpenJournalRank Indicator (OJR) is a free, publicly available metric of a journal’s field-normalized citation impact, computed from open OpenAlex citation data. It compares citations to a journal’s papers from the previous three years with the world average for papers of the same subfield, year and type, so 1.00 is the world average and values can be compared across fields. It is computed with the NCI3 method.
The middle OJR among ranked journals in this category: half score higher, half lower. 1.00 is the world average for papers of the same subfield, year and type.
The dot is this category, the solid tick is the median of all ranked journals and the dashed line is the world average.
Share of ranked journals in this category that are fully open access, so every paper is free to read. Hybrid journals, which sell subscriptions and open single papers for a fee, are not counted.
Median list price of the article processing charge, in US dollars, among ranked journals in this category that list a price above zero. Journals with a listed APC of $0 and journals with no known price are left out of this median. The At a glance table below gives a second median that includes the $0 prices.
Subfields of Mathematics (10)
12 ranked journals
Filters
Rank is the position by OJR within the list on screen; 1 is the highest. | OJR is field-normalized 3-year citation impact: 1.00 is the world average for papers of the same subfield, year and type, so values compare across fields. The badge is the journal’s quartile in this list. | Citations per paper over a two-year window, counted from OpenAlex. It is not field-normalized, so compare it only between journals of the same field. ▲ or ▼ is the change from 2000. This is OpenJournalRank’s own count, not Clarivate’s Journal Impact Factor. | Citable documents (articles, reviews and conference papers) published in 1998–2000, the window the 2001 OJR is computed on. A journal needs at least 30 to be ranked. | Share of the journal’s 1998–2000 papers that are free to read in any open-access form. The green OA tag next to a title marks a fully open-access journal. | List price of the article processing charge in US dollars. “$0 listed” means the listed price is zero; a dash means no price is listed. | The line is the journal’s OJR from 2000 to 2001. | Compare |
|---|---|---|---|---|---|---|---|
1COMBINATORICASpringer Science+Business Media · Germany | 1.72Q1 | 1.30 0.20 up from 2000 | 111 | 8% | $3,290 | ||
2Combinatorics Probability ComputingCambridge University Press · United Kingdom | 1.40Q1 | 0.90 0.33 up from 2000 | 133 | 9% | $3,550 | ||
3Random Structures and AlgorithmsWiley · United States | 1.22Q1 | 1.04 0.23 up from 2000 | 208 | 8% | $4,550 | ||
4The Electronic Journal of CombinatoricsOAElectronic Journal of Combinatorics · United States | 1.15Q2 | 0.60 0.11 down from 2000 | 178 | 100% | — | ||
5Journal of Algebraic CombinatoricsSpringer Science+Business Media · United States | 1.15Q2 | 0.67 0.21 down from 2000 | 102 | 92% | $3,090 | ||
6Journal of Combinatorial Theory Series AElsevier BV · United States | 0.97Q2 | 0.60 0.15 up from 2000 | 254 | 100% | $4,210 | ||
7Advances in Applied MathematicsElsevier BV · United States | 0.95Q3 | 0.68 0.15 up from 2000 | 126 | 100% | $3,380 | ||
8Annals of CombinatoricsBirkhäuser · Singapore | 0.89Q3 | 0.67 0.06 down from 2000 | 87 | 9% | $2,990 | ||
9Journal of Combinatorial Theory Series BElsevier BV · United States | 0.85Q3 | 0.68 0.30 up from 2000 | 178 | 97% | $4,150 | ||
10Journal of Group TheoryDe Gruyter · Germany | 0.75Q4 | 0.47 0.03 down from 2000 | 94 | 6% | $2,712 | ||
11European Journal of CombinatoricsElsevier BV · Netherlands | 0.61Q4 | 0.37 0.02 up from 2000 | 332 | 97% | $3,560 | ||
12Pure mathematics and applicationsDe Gruyter · Hungary | 0.16Q4 | 0.05 0.05 up from 2000 | 121 | 0% | — |
Subfields of Mathematics, with Discrete Mathematics and Combinatorics highlighted.
- Applied Mathematics94
- Geometry and Topology82
- Statistics and Probability64
- Mathematical Physics45
- Modeling and Simulation13
- Algebra and Number Theory12
- Discrete Mathematics and Combinatorics12
- Numerical Analysis4
- Computational Mathematics0
- Theoretical Computer Science0
Journals
Citations made in 2001. Corpus-wide, 67.0% of core-journal articles and reviews published that year have at least one matched reference; the share varies by journal and field.
1 additional Discrete Mathematics and Combinatorics journal with metrics is unranked under this release’s eligibility rules: a journal needs at least 30 citable documents in 1998–2000, at least 80% of them with a subfield, and a positive world-average expectation. Ranks are within the whole category; filters hide rows without re-ranking. OJR excludes self-citations.
At a glance
Indicator year: 2001. Publication window: 1998–2000. How these summaries are calculated
- Ranked journals
- 12
- Window papers (baseline)
- 3,179 Change unavailable from indicator year 1998
- Median OJR
- 0.96 Change unavailable from indicator year 1998
- Rising journals (2025)
- 3
Window papers are the baseline paper population: citable papers (articles, reviews and conference papers) from 1998–2000 in all journals of the world-average baseline, including non-core journals, counted by each paper’s own subfield. They are not the papers of the ranked journals alone.
| Measure | Year series | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Ranked journals | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 13 | 13 | 13 | 13 | 13 | 14 | 13 | 13 | 13 | 13 | 13 | 13 | 14 | 15 | 15 | 15 | 17 | 18 | 18 | |
| Window papers (baseline) | 2,954 | 3,179 | 3,372 | 3,631 | 3,855 | 4,032 | 4,235 | 4,483 | 4,813 | 5,200 | 5,530 | 5,653 | 5,903 | 6,060 | 6,428 | 6,503 | 6,778 | 6,837 | 6,830 | 6,805 | 6,953 | 7,242 | 7,388 | 7,362 | 7,239 | 7,022 | |
| Median OJR | 0.92 | 0.96 | 1.005 | 0.98 | 1.04380 | 1.1488 | 1.1494 | 1.22 | 1.23 | 1.20 | 1.02 | 1.12 | 1.08 | 1.04378 | 1.1489 | 1.10 | 1.003 | 0.89 | 0.73 | 0.64 | 0.58 | 0.52 | 0.510 | 0.512 | 0.55 | 0.54 |
How to read these rankings
- OJR, the OpenJournalRank Indicator
- A field-normalized 3-year citation impact, computed from OpenAlex with the NCI3 method. It divides the citations a journal’s papers received by the world average for papers of the same subfield, year and type, so 1.00 is the world average and 2.00 means twice as many citations as expected. Because it is normalized, it can be compared across fields. Read the methodology
- Quartiles
- Q1 to Q4 split the ranked journals of the list you are viewing into four equal groups by OJR. A journal’s quartile depends on the list: the same journal can be Q1 in its subfield and Q2 among all journals.
- Impact factor (2-year)
- Citations per paper over a two-year window, counted from OpenAlex. It is easy to compare with familiar impact factors but is not field-normalized, so compare it only within a field. It is not Clarivate’s Journal Impact Factor. Why it differs from the Journal Impact Factor
- Rank ranges
- Each rank in the latest year carries a likely range from 1,000 resamples of the journal’s papers. Where two journals’ ranges overlap, the data cannot tell them apart, so treat neighbouring ranks as ties.