Journal profile · Mathematics
Constructive Approximation
ISSN 0176-4276 · eISSN 1432-0940 · Springer US · UNITED STATES · Bimonthly · Founded 1985
Constructive Approximation: CAS Zone 3 · Mathematics (2025 upgraded edition); impact factor 1.32; hybrid open access; APC about USD 3,090; median 447 days to acceptance (85 articles, last 24 months); community-reported acceptance: about 50%; 26 articles in 2025; indexed in SCIE and Scopus.
Scope
Aims, scope and focus
Constructive Approximation is published by Springer US 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 Mathematical functions and polynomials, Advanced Numerical Analysis Techniques and Mathematical Approximation and Integration, together about 35.2% of its articles. Its main subfields are Applied Mathematics. (generated from OpenAlex topic counts and CAS ranking data)
Constructive Approximation is an international mathematics journal dedicated to Approximations and Expansions and related research in computation, potential theory, function theory, functional analysis, interpolation spaces and interpolation of operators, numerical analysis, space of functions, special functions, and applications.
From the journal's Aims & Scope
Research area (LetPub): Mathematics
Editor-in-chief Philipp GrohsPublisher website
Editorial board by country: none in mainland China; most named United States 21, Germany 6, France 4, Belgium 3, Austria 3 (48 members with a country) Editorial board ↗Publisher website ·
Main research topics OpenAlex counts of recent articles; shares are approximate
- Mathematical functions and polynomialsMathematics17%
- Advanced Numerical Analysis TechniquesEngineering9.2%
- Mathematical Approximation and IntegrationMathematics9%
- Mathematical Analysis and Transform MethodsMathematics6.6%
- Approximation Theory and Sequence SpacesMathematics4.8%
- Matrix Theory and AlgorithmsComputer Science4.4%
- Advanced Harmonic Analysis ResearchMathematics4.2%
- Holomorphic and Operator TheoryMathematics4.1%
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 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 2
| Level | Category | Zone |
|---|---|---|
| Major | Mathematics | Zone 2 |
| Minor | Mathematics | Zone 2 |
Top journal: noReview journal: no
Database indexing
SCIEScopusLetPub
International journal early-warning lists: not listed in any editionLetPub
Indexing the journal's website claims
zbMATHCurrent ContentsPublisher website
Other: Google Scholar, EBSCO, ProQuest, Dimensions, CNKI, Baidu, Naver, OCLC, Portico, CLOCKSS
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
- 1.32LetPub ·
- Impact factor (publisher) 2025
- 1.4Publisher website ·
- 5-year impact factor (publisher) 2025
- 2.3Publisher website ·
- CiteScore 2026-06
- 6.3LetPub ·
- SJR 2026-06
- 1.29LetPub ·
- SNIP 2026-06
- 1.94LetPub ·
- h-index
- 42LetPub ·
- h-index
- 82OpenAlex ·
- i10-index
- 769OpenAlex ·
- 2-year mean citedness
- 1.16OpenAlex ·
- Self-citation rate
- 7.1%LetPub ·
- Share of gold OA articles
- 41.82%LetPub ·
Volume
- Articles per year
- 25LetPub ·
- Downloads per year (publisher) 2025
- 109,600Publisher website ·
Articles by year OpenAlex count · 1,527 in total · the current year is incomplete
| Year | Articles | Open access | Citations |
|---|---|---|---|
| 2026 | 55 | 43 | 13 |
| 2025 | 26 | 16 | 42 |
| 2024 | 29 | 15 | 73 |
| 2023 | 61 | 36 | 275 |
| 2022 | 45 | 21 | 253 |
| 2021 | 38 | 26 | 1,157 |
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
Review time from article dates manuscript dates registered with Crossref · to
447 daysMedian, submission to acceptance · P25–P75 262 days – 686 days
- Acceptance to online
- median 31 days (86 articles)
- Submission to online
- median 490 days
- Sample
- 85 articles with submission and acceptance dates (86 in the window); the latest was accepted on
Only articles that were accepted and published are counted, not the time spent on rejected manuscripts, so this usually runs longer than a publisher's "time to first decision".
Other sources
- Average review time (community reports)
- about 1 monthLetPub ·
- Average acceptance (community reports)
- 50%LetPub ·
- Peer review
- Double anonymous peer reviewPublisher website
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
Hybrid open accessLetPub
A subscription journal in which authors can pay to publish their article open access.
| Source | APC | Fee waiver | License | Observed |
|---|---|---|---|---|
| OpenAlex | USD 3,090 / EUR 2,490 / GBP 2,190 | — | — |
A hybrid journal charges the APC only when the author chooses open access; publishing under the subscription model is usually free.
The journal's website is authoritative for fees; sources were observed at different times and each keeps its own value, without averaging.
Submission
Article types and submission policies (journal website)
Policy excerpts from the journal's websiteData availability, Open access
- Data availability Data availability statements
All original research must include a data availability statement. This statement should explain how to access data supporting the results and analysis in the article, including links/citations to publicly archived datasets analysed or generated during the study. Please see our full policy here. If it is not possible to share research data publicly, for instance when individual privacy could be com…
Source ↗Publisher website ·- Open access Open access publishing
To find out more about publishing your work Open Access in Constructive Approximation, including information on fees, funding and licences, visit our Open access publishing page. Back to top
Source ↗Publisher website ·
Excerpts are quoted from the journal's website; "model summary" lines are written by Workers AI and checked against the text. The journal's website is authoritative.
Profile
Publication details and official links
- Publisher
- Springer US
- Country or region
- UNITED STATES
- Language
- English
- Frequency
- Bimonthly
- Founded
- 1985
- ISSN
- 0176-4276
- Electronic ISSN
- 1432-0940
- Latest issue on the website
- Volume 64, Issue 1 (August 2026)
- Official links
- Journal homepage ↗OpenAlex
- Submission system ↗Publisher website
- Author guidelines ↗LetPub
- Special issues ↗Publisher website
FAQ
Frequently asked questions about Constructive Approximation
What CAS zone is Constructive Approximation in?
In the 2025 upgraded edition of the CAS Journal Ranking, Constructive Approximation is in Zone 3 of Mathematics, and in Zone 3 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 Constructive Approximation?
The latest impact factor listed by LetPub is 1.32; CiteScore 6.3, h-index 82.
How long does peer review take at Constructive Approximation?
Based on the dates recorded on 85 articles published between October 2024 and October 2026 (the last 24 months), the median time from submission to acceptance is 447 days (interquartile range 262–686 days); authors report an average review time of about 1 month; the community-reported acceptance is “about 50%”. 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.
Where are the editorial board members of Constructive Approximation based?
Of the 48 board members whose country the journal's board page names, none are in mainland China; the countries named most often are United States (21), Germany (6) and France (4). Counted from the institutions listed on the board page; for reference only.
Which databases index Constructive Approximation?
According to LetPub and DOAJ records, Constructive Approximation is indexed in SCIE and Scopus. The journal's website also lists zbMATH and Current Contents; that list has not been checked against each database.
Is Constructive Approximation open access, and what is the APC?
Constructive Approximation is a hybrid journal. For open-access publication: APC about USD 3,090.
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: .