Journal profile · Mathematics
Journal of Operator Theory
ISSN 0379-4024 · eISSN 1841-7744 · Theta Foundation · ROMANIA · Quarterly
Journal of Operator Theory: CAS Zone 3 · Mathematics (2025 upgraded edition); impact factor 0.64; subscription journal; review about 12 months (community reports); community-reported acceptance: easy; 48 articles in 2025; indexed in SCIE and Scopus.
Scope
Aims, scope and focus
Journal of Operator Theory is published by Theta Foundation and is in Zone 3 of Mathematics in the CAS Journal Ranking (2025 upgraded edition). By OpenAlex counts of its recent articles, its largest topics are Advanced Operator Algebra Research, Advanced Topics in Algebra and Holomorphic and Operator Theory, together about 49.9% of its articles. Its main subfields are Mathematical Physics and Applied Mathematics. (generated from OpenAlex topic counts and CAS ranking data)
The Journal of Operator Theory is rigorously peer reviewed and endevours to publish significant articles in all areas of operator theory, operator algebras and closely related domains.
Source: LetPub
Research area (LetPub): Mathematics
Main research topics OpenAlex counts of recent articles; shares are approximate
- Advanced Operator Algebra ResearchMathematics18.1%
- Advanced Topics in AlgebraMathematics16.3%
- Holomorphic and Operator TheoryMathematics15.6%
- Spectral Theory in Mathematical PhysicsMathematics8.3%
- Advanced Banach Space TheoryMathematics5.8%
- Algebraic structures and combinatorial modelsMathematics4.6%
- Matrix Theory and AlgorithmsComputer Science4.6%
- Algebraic and Geometric AnalysisMathematics3.9%
Rankings & indexing
CAS ranking and database indexing
CAS Journal Ranking
CAS Journal Ranking, upgraded edition (March 2025)Mathematics Zone 3
| Level | Category | Zone |
|---|---|---|
| Major | Mathematics | Zone 3 |
| Minor | Mathematics | Zone 3 |
Top journal: noReview journal: no
CAS Xinrui Journal Ranking (March 2026)Mathematics Zone 2
| Level | Category | Zone |
|---|---|---|
| Major | Mathematics | Zone 2 |
| Minor | Mathematics | Zone 2 |
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 |
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
- 0.64LetPub ·
- CiteScore 2026-06
- 1.2LetPub ·
- SJR 2026-06
- 0.58LetPub ·
- SNIP 2026-06
- 1.16LetPub ·
- h-index
- 30LetPub ·
- h-index
- 24OpenAlex ·
- i10-index
- 107OpenAlex ·
- 2-year mean citedness
- 2.14OpenAlex ·
- Self-citation rate
- 0%LetPub ·
- Share of gold OA articles
- 0.78%LetPub ·
Volume
- Articles per year
- 42LetPub ·
Articles by year OpenAlex count · 683 in total · the current year is incomplete
| Year | Articles | Open access | Citations |
|---|---|---|---|
| 2026 | 36 | 11 | 216 |
| 2025 | 48 | 4 | 25 |
| 2024 | 48 | 8 | 41 |
| 2023 | 35 | 15 | 49 |
| 2022 | 31 | 16 | 72 |
| 2021 | 61 | 24 | 205 |
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 12 monthsLetPub ·
- 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
- Theta Foundation
- Country or region
- ROMANIA
- Language
- Multi-Language
- Frequency
- Quarterly
- ISSN
- 0379-4024
- Electronic ISSN
- 1841-7744
- Official links
- Journal homepage ↗OpenAlex
- Submission system ↗LetPub
FAQ
Frequently asked questions about Journal of Operator Theory
What CAS zone is Journal of Operator Theory in?
In the 2025 upgraded edition of the CAS Journal Ranking, Journal of Operator Theory is in Zone 3 of Mathematics, and in Zone 3 of the minor category Mathematics. In the 2026 Xinrui edition it is in Zone 2 of Mathematics. Zones from different editions, and from major and minor categories, are not interchangeable.
What is the impact factor of Journal of Operator Theory?
The latest impact factor listed by LetPub is 0.64; CiteScore 1.2, h-index 24.
How long does peer review take at Journal of Operator Theory?
Authors report an average review time of about 12 months; the community-reported acceptance is “Easy”. 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.
Which databases index Journal of Operator Theory?
According to LetPub and DOAJ records, Journal of Operator Theory is indexed in SCIE and Scopus.
Is Journal of Operator Theory open access, and what is the APC?
Journal of Operator Theory 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 2026-08-26). Last updated: .