Journal profile · Mathematics-Discrete Mathematics and Combinatorics
Combinatorial Theory
ISSN 2766-1334 · eScholarship Publishing, University of California · United States
Combinatorial Theory: diamond open access (no APC); no APC; review about 60 weeks (community reports); 54 articles in 2025; indexed in ESCI and Scopus.
Scope
Aims, scope and focus
Combinatorial Theory is published by eScholarship Publishing, University of California. By OpenAlex counts of its recent articles, its largest topics are Advanced Combinatorial Mathematics, Advanced Graph Theory Research and Finite Group Theory Research, together about 50.1% of its articles. Its main subfields are Discrete Mathematics and Combinatorics and Algebra and Number Theory. (generated from OpenAlex topic counts and CAS ranking data)
Combinatorial Theory publishes original contributions that advance understanding of discrete structures exhibiting a high degree of combinatorial complexity.The journal welcomes submissions that represent substantial advances in the fields of Additive, Algebraic, Analytic, Enumerative, Extremal, Geometric, Probabilistic and Topological Combinatorics, as well as theoretical aspects of their applications to other areas of mathematics and the sciences. The journal also welcomes high-quality submissions in these areas that organize, clarify, and simplify existing body of work.In addition to Research Article submissions, the journal also accepts Expository Article submissions, to encourage inclusion of valuable well-written expositions.
From the journal's Aims & Scope
Research area (LetPub): Mathematics-Discrete Mathematics and Combinatorics
Editorial board by country: 1 in mainland China (about 2%); most named United States 31, Germany 6, France 5, United Kingdom 4, Canada 4 (66 members with a country) Editorial board ↗Publisher website ·
Main research topics OpenAlex counts of recent articles; shares are approximate
- Advanced Combinatorial MathematicsMathematics32%
- Advanced Graph Theory ResearchComputer Science9.9%
- Finite Group Theory ResearchMathematics8.2%
- Limits and Structures in Graph TheoryMathematics7.2%
- Advanced Mathematical IdentitiesMathematics5.9%
- Commutative Algebra and Its ApplicationsMathematics4.4%
- Complexity and Algorithms in GraphsComputer Science3.8%
- Algebraic structures and combinatorial modelsMathematics3%
Rankings & indexing
CAS ranking and database indexing
CAS Journal Ranking
CAS Journal Ranking, upgraded edition (March 2025)Not covered
Not covered by this edition.
CAS Xinrui Journal Ranking (March 2026)Not covered
Not covered by this edition.
CAS Journal Ranking, previous upgraded edition (December 2023)Not covered
Not covered by this edition.
CiteScore quartiles (Scopus, June 2026 release)
| Subject | Quartile | Rank | Percentile |
|---|---|---|---|
| Discrete Mathematics and Combinatorics | Q2 | 42/99 | 58th |
Scopus ranks journals by CiteScore within each subject: the 75th percentile and above is Q1, then a quartile every 25 points. A different system from the CAS zones.LetPub
Database indexing
ESCIScopusDOAJLetPub
International journal early-warning lists: not listed in any editionLetPub
Editions, and major and minor categories, are shown separately and never merged into one zone; check which edition your institution uses before you submit or report.
Metrics
Impact metrics and publication volume
Impact
- CiteScore 2026-06
- 1.7LetPub ·
- SJR 2026-06
- 0.99LetPub ·
- SNIP 2026-06
- 1.5LetPub ·
- h-index
- 11OpenAlex ·
- i10-index
- 15OpenAlex ·
- 2-year mean citedness
- 1.35OpenAlex ·
- Self-citation rate
- 7.1%LetPub ·
- Share of gold OA articles
- 99.37%LetPub ·
Volume
- Articles per year
- 70LetPub ·
Articles by year OpenAlex count · 303 in total · the current year is incomplete
| Year | Articles | Open access | Citations |
|---|---|---|---|
| 2026 | 66 | 66 | 59 |
| 2025 | 54 | 54 | 148 |
| 2024 | 36 | 36 | 186 |
| 2023 | 54 | 54 | 136 |
| 2022 | 51 | 51 | 65 |
| 2021 | 20 | 20 | 47 |
Sources count differently and were observed at different times, so each source's own value is kept; "publisher" marks figures from the journal's website.
Review & acceptance
Review time and acceptance
- Average review time (community reports)
- about 60 weeksLetPub ·
- Submission to publication (journal-reported)
- about 60 weeksDOAJ ·
- Peer review
- Double anonymous peer reviewDOAJ
Community reports come from authors' own submissions (confidence 0.5) and are not a promise from the journal; for publisher figures, the journal's own definitions apply.
Fees & open access
APC and open-access policy
Diamond open access (no APC)DOAJ
Every article is open access and authors pay no article processing charge.
| Source | APC | Fee waiver | License | Observed |
|---|---|---|---|---|
| DOAJ | No APC | No | CC BY | |
| LetPub | No APC | No | — | |
| Publisher website | No APC | — | — |
The journal's website is authoritative for fees; sources were observed at different times and each keeps its own value, without averaging.
Submission
Article types and submission policies (journal website)
Policy excerpts from the journal's websitePeer review
- Peer review
Doubly anonymous peer review Model summary
Combinatorial Theory uses a doubly anonymous reviewing process. This means that referees will not be told the names of the authors of the papers they review, and authors will not be told the names of the referees who review their papers.
Source ↗Publisher website ·
Excerpts are quoted from the journal's website; "model summary" lines are written by Workers AI and checked against the text. The journal's website is authoritative.
Profile
Publication details and official links
- Publisher
- eScholarship Publishing, University of California
- Country or region
- United States
- Language
- English
- ISSN
- 2766-1334
- Official links
- Journal homepage ↗LetPub
- Author guidelines ↗LetPub
- Aims & Scope ↗LetPub
- APC information ↗DOAJ
- Open access statement ↗DOAJ
- License & copyright ↗DOAJ
- Peer review process ↗LetPub
- Editorial board ↗LetPub
FAQ
Frequently asked questions about Combinatorial Theory
How long does peer review take at Combinatorial Theory?
Authors report an average review time of about 60 weeks. Article statistics cover accepted papers only, publisher figures follow the journal's own definitions, and community reports come from authors' own submissions; none is a promise from the journal.
Where are the editorial board members of Combinatorial Theory based?
Of the 66 board members whose country the journal's board page names, 1 (about 2%) are in mainland China; the countries named most often are United States (31), Germany (6) and France (5). Counted from the institutions listed on the board page; for reference only.
Which databases index Combinatorial Theory?
According to LetPub and DOAJ records, Combinatorial Theory is indexed in ESCI, Scopus and DOAJ.
Is Combinatorial Theory open access, and what is the APC?
Combinatorial Theory is a diamond open-access journal (no APC). It charges no article processing charge.
Sources and updates
The facts on this page come from LetPub, OpenAlex, DOAJ, Publisher website; every figure is tagged with its source and the date it was observed, and conflicting values are kept per source. LetPub source page: view ↗ (archived 2026-08-26). Last updated: .