Journal profile · MATHEMATICS
Transactions on Combinatorics
ISSN 2251-8657 · eISSN 2251-8665 · University of Isfahan · Iran, Islamic Republic of
Transactions on Combinatorics: CAS Zone 4 · Mathematics (2025 upgraded edition); impact factor 0.5 (journal website); diamond open access (no APC); no APC; review about 30 weeks (community reports); 21 articles a year; indexed in ESCI and Scopus.
Scope
Aims, scope and focus
Transactions on Combinatorics is published by University of Isfahan and is in Zone 4 of Mathematics in the CAS Journal Ranking (2025 upgraded edition). By OpenAlex counts of its recent articles, its largest topics are Advanced Graph Theory Research, Graph theory and applications and Graph Labeling and Dimension Problems, together about 50% of its articles. Its main subfields are Computational Theory and Mathematics. (generated from OpenAlex topic counts and CAS ranking data)
TOC is an international mathematical journal founded in 2011. It carries original research articles in the field of combinatorics. TOC aims to reflect the latest developments in combinatorics and promote international academic exchanges.
From the journal's Aims & Scope
Research area (LetPub): MATHEMATICS
Editor-in-chief Alireza Abdollahi CayleyPublisher website
Editorial board by country: 1 in mainland China (about 4%); most named Iran 12, United States 5, Serbia 2, Mainland China 1, South Korea 1 (25 members with a country) Editorial board ↗Publisher website ·
Main research topics OpenAlex counts of recent articles; shares are approximate
- Advanced Graph Theory ResearchComputer Science16.7%
- Graph theory and applicationsMathematics16.7%
- Graph Labeling and Dimension ProblemsComputer Science16.7%
- Multi-Criteria Decision MakingDecision Sciences4.2%
- Advanced Wireless Communication TechniquesEngineering4.2%
- Computational Drug Discovery MethodsComputer Science4.2%
- Cooperative Communication and Network CodingComputer Science4.2%
- Interconnection Networks and SystemsComputer Science4.2%
Rankings & indexing
CAS ranking and database indexing
CAS Journal Ranking
CAS Journal Ranking, upgraded edition (March 2025)Mathematics Zone 4
| Level | Category | Zone |
|---|---|---|
| Major | Mathematics | Zone 4 |
| Minor | Mathematics | Zone 4 |
Top journal: noReview journal: no
CAS Xinrui Journal Ranking (March 2026)Mathematics Zone 4
| Level | Category | Zone |
|---|---|---|
| Major | Mathematics | Zone 4 |
| Minor | Mathematics | Zone 4 |
Top journal: noReview journal: not marked
CAS Journal Ranking, previous upgraded edition (December 2023)Not covered
Not covered by this edition.
Database indexing
ESCIScopusDOAJLetPub
International journal early-warning lists: not listed in any editionLetPub
Indexing the journal's website claims
Web of SciencePublisher website
Other: ELMI-PAJOHESHI
As the journal's website lists them, not checked against each database; for Web of Science editions the records above apply.
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
- Impact factor (publisher)
- 0.5Publisher website ·
- CiteScore 2026-06
- 1.1LetPub ·
- SJR 2026-06
- 0.26LetPub ·
- SNIP 2026-06
- 0.74LetPub ·
- h-index
- 3OpenAlex ·
- i10-index
- 1OpenAlex ·
- 2-year mean citedness
- 0OpenAlex ·
- Self-citation rate
- 20%LetPub ·
- Share of gold OA articles
- 0%LetPub ·
Volume
- Articles per year
- 21LetPub ·
- Articles per year (publisher)
- 15Publisher website ·
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
Review time from article dates manuscript dates registered with PubMed · to
Too few articlesOnly 1 articles from the last 24 months carry both submission and acceptance dates, too few for a median
Only articles that were accepted and published are counted, not the time spent on rejected manuscripts, so this usually runs longer than a publisher's "time to first decision".
Other sources
- Average review time (community reports)
- about 30 weeksLetPub ·
- Submission to publication (journal-reported)
- about 30 weeksDOAJ ·
- Peer review
- Unspecified 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 websiteOpen access
- Open access
Open access Model summary
TOC is an international open access journal.
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
- University of Isfahan
- Country or region
- Iran, Islamic Republic of
- Language
- English
- ISSN
- 2251-8657
- Electronic ISSN
- 2251-8665
- Latest issue on the website
- Volume 15, Issue 4 (2026)
- 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 Transactions on Combinatorics
What CAS zone is Transactions on Combinatorics in?
In the 2025 upgraded edition of the CAS Journal Ranking, Transactions on Combinatorics is in Zone 4 of Mathematics, and in Zone 4 of the minor category Mathematics. In the 2026 Xinrui edition it is in Zone 4 of Mathematics. Zones from different editions, and from major and minor categories, are not interchangeable.
What is the impact factor of Transactions on Combinatorics?
The journal's website gives an impact factor of 0.5; this is the journal's own figure, as LetPub lists none for it; CiteScore 1.1, h-index 3.
How long does peer review take at Transactions on Combinatorics?
Authors report an average review time of about 30 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 Transactions on Combinatorics based?
Of the 25 board members whose country the journal's board page names, 1 (about 4%) are in mainland China; the countries named most often are Iran (12), United States (5) and Serbia (2). Counted from the institutions listed on the board page; for reference only.
Which databases index Transactions on Combinatorics?
According to LetPub and DOAJ records, Transactions on Combinatorics is indexed in ESCI, Scopus and DOAJ. The journal's website also lists Web of Science; that list has not been checked against each database.
Is Transactions on Combinatorics open access, and what is the APC?
Transactions on Combinatorics 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, Publisher website, OpenAlex, DOAJ; 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 2026-08-25). Last updated: .