Journal profile · Mathematics
Kodai Mathematical Journal
ISSN 0386-5991 · eISSN 1881-5472 · Tokyo Institute of Technology · JAPAN · Tri-annual
Kodai Mathematical Journal: CAS Zone 4 · Mathematics (2025 upgraded edition); impact factor 0.23; subscription journal; review over 12 weeks (community reports); community-reported acceptance: easy; 17 articles in 2025; indexed in SCIE and Scopus.
Scope
Aims, scope and focus
Kodai Mathematical Journal is published by Tokyo Institute of Technology 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 Geometric Analysis and Curvature Flows, Geometry and complex manifolds and Meromorphic and Entire Functions, together about 29% of its articles. Its main subfields are Geometry and Topology and Applied Mathematics. (generated from OpenAlex topic counts and CAS ranking data)
Kodai Mathematical Journal is edited by the Department of Mathematics, Tokyo Institute of Technology. The journal was issued from 1949 until 1977 as Kodai Mathematical Seminar Reports, and was renewed in 1978 under the present name. The journal is published three times yearly and includes original papers in mathematics.
Source: LetPub
Research area (LetPub): Mathematics
Main research topics OpenAlex counts of recent articles; shares are approximate
- Geometric Analysis and Curvature FlowsMathematics13%
- Geometry and complex manifoldsMathematics8.3%
- Meromorphic and Entire FunctionsMathematics7.7%
- Algebraic Geometry and Number TheoryMathematics6.3%
- Holomorphic and Operator TheoryMathematics6.2%
- Geometric and Algebraic TopologyMathematics5.3%
- Advanced Differential Geometry ResearchPhysics and Astronomy5.2%
- Analytic and geometric function theoryMathematics5.1%
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 3
| Level | Category | Zone |
|---|---|---|
| Major | Mathematics | 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 |
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
- 0.23LetPub ·
- CiteScore 2026-06
- 0.7LetPub ·
- SJR 2026-06
- 0.33LetPub ·
- SNIP 2026-06
- 0.5LetPub ·
- h-index
- 21LetPub ·
- h-index
- 49OpenAlex ·
- i10-index
- 532OpenAlex ·
- 2-year mean citedness
- 0.17OpenAlex ·
- Self-citation rate
- 0%LetPub ·
- Share of gold OA articles
- 0%LetPub ·
Volume
- Articles per year
- 17LetPub ·
Articles by year OpenAlex count · 2,538 in total · the current year is incomplete
| Year | Articles | Open access | Citations |
|---|---|---|---|
| 2026 | 13 | 3 | 0 |
| 2025 | 17 | 1 | 3 |
| 2024 | 22 | 5 | 6 |
| 2023 | 18 | 1 | 33 |
| 2022 | 22 | 5 | 46 |
| 2021 | 27 | 19 | 66 |
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)
- over 12 weeksLetPub ·
- 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
- Tokyo Institute of Technology
- Country or region
- JAPAN
- Language
- English
- Frequency
- Tri-annual
- ISSN
- 0386-5991
- Electronic ISSN
- 1881-5472
- Official links
- Journal homepage ↗LetPub
- Submission system ↗LetPub
FAQ
Frequently asked questions about Kodai Mathematical Journal
What CAS zone is Kodai Mathematical Journal in?
In the 2025 upgraded edition of the CAS Journal Ranking, Kodai Mathematical Journal is in Zone 4 of Mathematics, and in Zone 4 of the minor category Mathematics. 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 Kodai Mathematical Journal?
The latest impact factor listed by LetPub is 0.23; CiteScore 0.7, h-index 49.
How long does peer review take at Kodai Mathematical Journal?
Authors report an average review time of over 12 weeks; 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 Kodai Mathematical Journal?
According to LetPub and DOAJ records, Kodai Mathematical Journal is indexed in SCIE and Scopus.
Is Kodai Mathematical Journal open access, and what is the APC?
Kodai Mathematical Journal 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: .