Journal profile · MATHEMATICS, INTERDISCIPLINARY APPLICATIONS
Complex Systems
ISSN 0891-2513 · Complex Systems Publications, inc.
Complex Systems: CAS Zone 4 · Mathematics (2025 upgraded edition); impact factor 1.2 (journal website); subscription journal; no APC; 20 articles in 2025; indexed in ESCI and Scopus.
Scope
Aims, scope and focus
Complex Systems is published by Complex Systems Publications, inc. 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 Cellular Automata and Applications, Computability, Logic, AI Algorithms and DNA and Biological Computing, together about 41.2% of its articles. Its main subfields are Artificial Intelligence. (generated from OpenAlex topic counts and CAS ranking data)
The original journal devoted to the science, mathematics and engineering of systems with simple components but complex overall behavior.
From the journal's Aims & Scope
Research area (LetPub): MATHEMATICS, INTERDISCIPLINARY APPLICATIONS
Main research topics OpenAlex counts of recent articles; shares are approximate
- Cellular Automata and ApplicationsComputer Science25.1%
- Computability, Logic, AI AlgorithmsComputer Science8.1%
- DNA and Biological ComputingBiochemistry, Genetics and Molecular Biology8%
- Neural Networks and ApplicationsComputer Science7%
- Evolutionary Algorithms and ApplicationsComputer Science6%
- Mathematical Dynamics and FractalsMathematics4.2%
- Metaheuristic Optimization Algorithms ResearchComputer Science3.5%
- Opinion Dynamics and Social InfluencePhysics and Astronomy3.5%
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, Interdisciplinary Applications | 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, Interdisciplinary Applications | 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
ESCIScopusLetPub
International journal early-warning lists: not listed in any editionLetPub
Indexing the journal's website claims
Web of SciencePublisher website
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)
- 1.2Publisher website ·
- CiteScore 2026-06
- 0.7LetPub ·
- SJR 2026-06
- 0.13LetPub ·
- SNIP 2026-06
- 0.36LetPub ·
- h-index
- 48OpenAlex ·
- i10-index
- 192OpenAlex ·
- 2-year mean citedness
- 8.64OpenAlex ·
- Self-citation rate
- 0%LetPub ·
- Share of gold OA articles
- 4%LetPub ·
Volume
- Articles per year
- 19LetPub ·
Articles by year OpenAlex count · 851 in total · the current year is incomplete
| Year | Articles | Open access | Citations |
|---|---|---|---|
| 2026 | 19 | 10 | 2 |
| 2025 | 20 | 8 | 4 |
| 2024 | 37 | 27 | 651 |
| 2023 | 19 | 10 | 27 |
| 2022 | 24 | 9 | 39 |
| 2021 | 28 | 7 | 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.
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.
| Source | APC | Fee waiver | License | Observed |
|---|---|---|---|---|
| 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.
Profile
Publication details and official links
- Publisher
- Complex Systems Publications, inc.
- ISSN
- 0891-2513
- Official links
- Journal homepage ↗OpenAlex
FAQ
Frequently asked questions about Complex Systems
What CAS zone is Complex Systems in?
In the 2025 upgraded edition of the CAS Journal Ranking, Complex Systems is in Zone 4 of Mathematics, and in Zone 4 of the minor category Mathematics, Interdisciplinary Applications. 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 Complex Systems?
The journal's website gives an impact factor of 1.2; this is the journal's own figure, as LetPub lists none for it; CiteScore 0.7, h-index 48.
Which databases index Complex Systems?
According to LetPub and DOAJ records, Complex Systems is indexed in ESCI and Scopus. The journal's website also lists Web of Science; that list has not been checked against each database.
Is Complex Systems open access, and what is the APC?
Complex Systems is a subscription journal. It charges no article processing charge.
Sources and updates
The facts on this page come from LetPub, OpenAlex, 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: .