Journal profile · MATHEMATICS, APPLIED-MATHEMATICS
Theory and Applications of Categories
ISSN 1201-561X · Mount Allison University · CANADA
Theory and Applications of Categories: CAS Zone 4 · Mathematics (2025 upgraded edition); impact factor 0.44; subscription journal; community-reported acceptance: easy; 30 articles in 2025; indexed in SCIE and Scopus.
Scope
Aims, scope and focus
Theory and Applications of Categories is published by Mount Allison University 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 Homotopy and Cohomology in Algebraic Topology, Algebraic structures and combinatorial models and Advanced Topics in Algebra, together about 48.7% of its articles. Its main subfields are Artificial Intelligence. (generated from OpenAlex topic counts and CAS ranking data)
The journal Theory and Applications of Categories will disseminate articles that significantly advance the study of categorical algebra or methods, or that make significant new contributions to mathematical science using categorical methods. The scope of the journal includes: all areas of pure category theory, including higher dimensional categories; applications of category theory to algebra, geometry and topology and other areas of mathematics; applications of category theory to computer science, physics and other mathematical sciences; contributions to scientific knowledge that make use of categorical methods.
Source: LetPub
Research area (LetPub): MATHEMATICS, APPLIED-MATHEMATICS
Main research topics OpenAlex counts of recent articles; shares are approximate
- Homotopy and Cohomology in Algebraic TopologyMathematics20.8%
- Algebraic structures and combinatorial modelsMathematics15.5%
- Advanced Topics in AlgebraMathematics12.4%
- Topic ModelingComputer Science6.5%
- Natural Language Processing TechniquesComputer Science5.6%
- Advanced Algebra and LogicComputer Science5.2%
- Logic, programming, and type systemsComputer Science3.7%
- Advanced Topology and Set TheoryMathematics2.8%
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 |
| Minor | Mathematics, Applied | Zone 4 |
Top journal: noReview journal: no
CAS Xinrui Journal Ranking (March 2026)Mathematics Zone 3
| Level | Category | Zone |
|---|---|---|
| Major | Mathematics | Zone 3 |
| Minor | Mathematics, Applied | Zone 3 |
| Minor | Mathematics | Zone 3 |
Top journal: noReview journal: not marked
CAS Journal Ranking, previous upgraded edition (December 2023)Mathematics Zone 4
| Level | Category | Zone |
|---|---|---|
| Major | Mathematics | Zone 4 |
| Minor | Mathematics | Zone 4 |
| Minor | Mathematics, Applied | Zone 4 |
Top journal: noReview journal: no
Database indexing
SCIEScopusLetPub
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
- Impact factor
- 0.44LetPub ·
- CiteScore 2026-06
- 0.9LetPub ·
- SJR 2026-06
- 0.63LetPub ·
- SNIP 2026-06
- 0.9LetPub ·
- h-index
- 27LetPub ·
- h-index
- 40OpenAlex ·
- i10-index
- 230OpenAlex ·
- 2-year mean citedness
- 0.37OpenAlex ·
- Self-citation rate
- 33.3%LetPub ·
- Share of gold OA articles
- 0%LetPub ·
Volume
- Articles per year
- 53LetPub ·
Articles by year OpenAlex count · 1,410 in total · the current year is incomplete
| Year | Articles | Open access | Citations |
|---|---|---|---|
| 2025 | 30 | 30 | 9 |
| 2024 | 87 | 86 | 34 |
| 2023 | 37 | 37 | 17 |
| 2022 | 41 | 41 | 26 |
| 2021 | 57 | 55 | 48 |
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 acceptance (community reports)
- EasyLetPub ·
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
Subscription journalLetPub
A subscription journal: articles are read by subscription or purchase, and authors usually pay no publication charge.
No source has fee information yet; check the journal's website.
The journal's website is authoritative for fees; sources were observed at different times and each keeps its own value, without averaging.
Profile
Publication details and official links
- Publisher
- Mount Allison University
- Country or region
- CANADA
- Language
- English
- ISSN
- 1201-561X
- Official links
- Journal homepage ↗OpenAlex
FAQ
Frequently asked questions about Theory and Applications of Categories
What CAS zone is Theory and Applications of Categories in?
In the 2025 upgraded edition of the CAS Journal Ranking, Theory and Applications of Categories is in Zone 4 of Mathematics, and in Zone 4 of the minor category Mathematics / Mathematics, Applied. In the 2026 Xinrui edition it is in Zone 3 of Mathematics. Zones from different editions, and from major and minor categories, are not interchangeable.
What is the impact factor of Theory and Applications of Categories?
The latest impact factor listed by LetPub is 0.44; CiteScore 0.9, h-index 40.
Which databases index Theory and Applications of Categories?
According to LetPub and DOAJ records, Theory and Applications of Categories is indexed in SCIE and Scopus.
Is Theory and Applications of Categories open access, and what is the APC?
Theory and Applications of Categories is a subscription journal. Fee information is not available yet; check the journal's website.
Sources and updates
The facts on this page come from LetPub, OpenAlex; 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: .