Journal profile · MATHEMATICS, APPLIED-MATHEMATICS
Journal of Inverse and Ill-Posed Problems
ISSN 0928-0219 · eISSN 1569-3945 · Walter de Gruyter GmbH · GERMANY · Monthly
Journal of Inverse and Ill-Posed Problems: CAS Zone 4 · Mathematics (2025 upgraded edition); impact factor 1.14; subscription journal; APC about USD 2,712; review over 12 weeks (community reports); community-reported acceptance: easy; 60 articles in 2025; indexed in SCIE and Scopus.
Scope
Aims, scope and focus
Journal of Inverse and Ill-Posed Problems is published by Walter de Gruyter GmbH 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 Numerical methods in inverse problems, Advanced Mathematical Modeling in Engineering and Differential Equations and Boundary Problems, together about 54.3% of its articles. (generated from OpenAlex topic counts and CAS ranking data)
About this journal The current volume of Journal of Inverse and Ill-Posed Problems is open access via Subscribe to Open (S2O). All accepted articles will be published under a Creative Commons license at no cost to authors. Learn more about De Gruyter Brill’s Subscribe to Open program.This journal aims to present original articles on the theory, numerics and applications of inverse and ill-posed problems. Th ese inverse and ill-posed problems arise in mathematical physics and mathematical analysis, geophysics, acoustics, electrodynamics, tomography, medicine, ecology, financial mathematics etc. Articles on the construction and justification of new numerical algorithms of inverse problem solutions are also published.Issues of the Journal of Inverse and Ill-Posed Problems contain high quality papers which have an innovative approach and topical interest.The following topics are covered:Inverse problemsexistence and uniqueness theoremsstability estimatesoptimization and identification problemsnumerical methodsmachine learningArtificial IntellegenceBig DataIll-posed problemsregularization theoryoperator equationsintegr al geometryApplicationsinverse problems in geophysics, electrodynamics and acousticsinverse problems in ecologyinverse and ill-pos ed problems in medicinemathematical problems of tomographyComplete Archive AccessAs of 2026, all De Gruyter journal subscriptions include access to every issue, from Volume 1, Issue 1 through to today, meaning subscribers can access even more research at no additional cost.
From the journal's Aims & Scope
Research area (LetPub): MATHEMATICS, APPLIED-MATHEMATICS
Editor-in-chief Sergey I. KabanikhinPublisher website
Main research topics OpenAlex counts of recent articles; shares are approximate
- Numerical methods in inverse problemsMathematics34.3%
- Advanced Mathematical Modeling in EngineeringComputer Science11.9%
- Differential Equations and Boundary ProblemsMathematics8%
- Microwave Imaging and Scattering AnalysisEngineering5.4%
- Stability and Controllability of Differential EquationsEngineering4%
- Spectral Theory in Mathematical PhysicsMathematics3.3%
- Statistical and numerical algorithmsMathematics2.8%
- Sparse and Compressive Sensing TechniquesEngineering2.6%
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 4
| Level | Category | Zone |
|---|---|---|
| Major | Mathematics | Zone 4 |
| Minor | Mathematics, Applied | Zone 4 |
| Minor | Mathematics | Zone 4 |
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
Indexing the journal's website claims
MathSciNetCurrent ContentsPublisher website
Other: EBSCO, ProQuest, Baidu, Naver, OCLC
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
- 1.14LetPub ·
- Impact factor (publisher)
- 1.2Publisher website ·
- 5-year impact factor (publisher)
- 1.1Publisher website ·
- CiteScore 2026-06
- 2.3LetPub ·
- CiteScore (publisher)
- 2.3Publisher website ·
- SJR 2026-06
- 0.42LetPub ·
- SNIP 2026-06
- 0.9LetPub ·
- h-index
- 28LetPub ·
- h-index
- 45OpenAlex ·
- i10-index
- 471OpenAlex ·
- 2-year mean citedness
- 0.91OpenAlex ·
- Self-citation rate
- 16.7%LetPub ·
- Share of gold OA articles
- 4.05%LetPub ·
Volume
- Articles per year
- 55LetPub ·
Articles by year OpenAlex count · 1,945 in total · the current year is incomplete
| Year | Articles | Open access | Citations |
|---|---|---|---|
| 2026 | 55 | 46 | 6 |
| 2025 | 60 | 6 | 43 |
| 2024 | 47 | 5 | 98 |
| 2023 | 74 | 19 | 233 |
| 2022 | 50 | 10 | 130 |
| 2021 | 45 | 15 | 257 |
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.
| Source | APC | Fee waiver | License | Observed |
|---|---|---|---|---|
| OpenAlex | EUR 2,400 | — | — |
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
- Walter de Gruyter GmbH
- Country or region
- GERMANY
- Language
- English
- Frequency
- Monthly
- ISSN
- 0928-0219
- Electronic ISSN
- 1569-3945
- Official links
- Journal homepage ↗OpenAlex
- Submission system ↗Publisher website
- Special issues ↗Publisher website
FAQ
Frequently asked questions about Journal of Inverse and Ill-Posed Problems
What CAS zone is Journal of Inverse and Ill-Posed Problems in?
In the 2025 upgraded edition of the CAS Journal Ranking, Journal of Inverse and Ill-Posed Problems 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 4 of Mathematics. Zones from different editions, and from major and minor categories, are not interchangeable.
What is the impact factor of Journal of Inverse and Ill-Posed Problems?
The latest impact factor listed by LetPub is 1.14; CiteScore 2.3, h-index 45.
How long does peer review take at Journal of Inverse and Ill-Posed Problems?
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 Journal of Inverse and Ill-Posed Problems?
According to LetPub and DOAJ records, Journal of Inverse and Ill-Posed Problems is indexed in SCIE and Scopus. The journal's website also lists MathSciNet and Current Contents; that list has not been checked against each database.
Is Journal of Inverse and Ill-Posed Problems open access, and what is the APC?
Journal of Inverse and Ill-Posed Problems is a subscription journal. APC about USD 2,712.
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 2026-08-25). Last updated: .