Journal profile · Mathematics, Applied
Numerical Functional Analysis and Optimization
ISSN 0163-0563 · eISSN 1532-2467 · Taylor and Francis Ltd. · UNITED STATES · Bimonthly
Numerical Functional Analysis and Optimization: CAS Zone 3 · Mathematics (2025 upgraded edition); impact factor 1.46; JCR Q2 (journal website); hybrid open access; APC charged, amount not published; median 305 days to acceptance (50 articles, last 24 months); community-reported acceptance: easy; 26 articles in 2025; indexed in SCIE and Scopus.
Scope
Aims, scope and focus
Numerical Functional Analysis and Optimization is published by Taylor and Francis Ltd. 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 Optimization and Variational Analysis, Advanced Optimization Algorithms Research and Advanced Mathematical Modeling in Engineering, together about 29.5% of its articles. Its main subfields are Computational Theory and Mathematics. (generated from OpenAlex topic counts and CAS ranking data)
Numerical Functional Analysis and Optimization is a journal aimed at development and applications of functional analysis and operator-theoretic methods in numerical analysis, optimization and approximation theory, control theory, signal and image processing, inverse and ill-posed problems, applied and computational harmonic analysis, operator equations, and nonlinear functional analysis. Not all high-quality papers within the union of these fields are within the scope of NFAO. Generalizations and abstractions that significantly advance their fields and reinforce the concrete by providing new insight and important results for problems arising from applications are welcome. On the other hand, technical generalizations for their own sake with window dressing about applications, or variants of known results and algorithms, are not suitable for this journal.
From the journal's Aims & Scope
Research area (LetPub): Mathematics, Applied
Editor-in-chief Panos ParpasPublisher website
Main research topics OpenAlex counts of recent articles; shares are approximate
- Optimization and Variational AnalysisComputer Science13.1%
- Advanced Optimization Algorithms ResearchMathematics9.7%
- Advanced Mathematical Modeling in EngineeringComputer Science6.8%
- Numerical methods in inverse problemsMathematics6.5%
- Fixed Point Theorems AnalysisMathematics6%
- Advanced Numerical Methods in Computational MathematicsEngineering5.8%
- Matrix Theory and AlgorithmsComputer Science5%
- Iterative Methods for Nonlinear EquationsMathematics3.8%
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, Applied | 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, Applied | 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, Applied | Zone 4 |
Top journal: noReview journal: no
JCR / CiteScore quartiles on the journal's website
- JCR Q2 · best quartile · 2025
- CiteScore Q1 · 2025
Publisher-reported: JCR figures are Clarivate's and CiteScore figures Scopus's to confirm; both are a different system from the CAS zones.Publisher website
Database indexing
SCIEScopusLetPub
International journal early-warning lists: not listed in any editionLetPub
Indexing the journal's website claims
EI CompendexWeb of ScienceMathSciNetzbMATHCurrent ContentsPublisher website
Other: ProQuest, OCLC, EBSCOhost (various), Genamics JournalSeek, OCLC ArticleFirst, Electronic Collections Online, Personal Alert (Email), ProQuest (various), VINITI RAN Referativnyi Zhurnal, World Ceramics Abstracts (Online)
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
- 1.46LetPub ·
- Impact factor (publisher) 2025
- 1.5Publisher website ·
- 5-year impact factor (publisher) 2025
- 1.3Publisher website ·
- CiteScore 2026-06
- 3LetPub ·
- CiteScore (publisher) 2025
- 3Publisher website ·
- SJR 2026-06
- 0.66LetPub ·
- SJR (publisher) 2025
- 0.66Publisher website ·
- SNIP 2026-06
- 1.09LetPub ·
- SNIP (publisher) 2025
- 1.09Publisher website ·
- h-index
- 39LetPub ·
- h-index
- 69OpenAlex ·
- i10-index
- 897OpenAlex ·
- 2-year mean citedness
- 1.88OpenAlex ·
- Self-citation rate
- 0%LetPub ·
- Share of gold OA articles
- 5.76%LetPub ·
Volume
- Articles per year
- 23LetPub ·
- Downloads per year (publisher)
- 27,000Publisher website ·
Articles by year OpenAlex count · 2,788 in total · the current year is incomplete
| Year | Articles | Open access | Citations |
|---|---|---|---|
| 2026 | 16 | 4 | 3 |
| 2025 | 26 | 9 | 57 |
| 2024 | 47 | 11 | 107 |
| 2023 | 71 | 5 | 273 |
| 2022 | 80 | 10 | 437 |
| 2021 | 106 | 18 | 719 |
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
305 daysMedian, submission to acceptance · P25–P75 239 days – 470 days
- Acceptance to online
- median 26 days (50 articles)
- Submission to online
- median 352 days
- Sample
- 50 articles with submission and acceptance dates (62 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)
- 6–12 weeksLetPub ·
- Average acceptance (community reports)
- EasyLetPub ·
- Acceptance rate (publisher)
- 5%Publisher website ·
- Submission to first decision
- 102 daysPublisher website ·
- First decision after review
- 471 daysPublisher website ·
- Acceptance to publication
- 35 daysPublisher 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 |
|---|---|---|---|---|
| Publisher website | Yes, amount not published | — | — |
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 websiteOpen access, Peer review
- Open access Open access
Numerical Functional Analysis and Optimization is a hybrid open access journal that is part of the Taylor & Francis Open Select publishing program, giving you the option to publish open access. Publishing open access means that your article will be free to access online immediately on publication, increasing the visibility, readership, and impact of your research. Why choose open access? Increase …
Source ↗Publisher website ·- Peer review
Rigorous peer review for every open access article Model summary
Rigorous peer review for every open access article
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
- Taylor and Francis Ltd.
- Country or region
- UNITED STATES
- Language
- English
- Frequency
- Bimonthly
- ISSN
- 0163-0563
- Electronic ISSN
- 1532-2467
- Latest issue on the website
- Volume 47, Issue 7-10 (2026)
- Official links
- Journal homepage ↗OpenAlex
- Submission system ↗Publisher website
- Special issues ↗Publisher website
FAQ
Frequently asked questions about Numerical Functional Analysis and Optimization
What CAS zone is Numerical Functional Analysis and Optimization in?
In the 2025 upgraded edition of the CAS Journal Ranking, Numerical Functional Analysis and Optimization is in Zone 3 of Mathematics, and in Zone 3 of the minor category Mathematics, Applied. 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 Numerical Functional Analysis and Optimization?
The latest impact factor listed by LetPub is 1.46; CiteScore 3, h-index 69.
How long does peer review take at Numerical Functional Analysis and Optimization?
Based on the dates recorded on 50 articles published between October 2024 and October 2026 (the last 24 months), the median time from submission to acceptance is 305 days (interquartile range 239–470 days); authors report an average review time of 6–12 weeks; the community-reported acceptance is “Easy”; the journal's website gives an acceptance rate of 5%. 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.
What JCR quartile is Numerical Functional Analysis and Optimization in?
The journal's website gives JCR Q2 (best quartile). JCR quartiles are Clarivate's to confirm and a different system from the CAS zones; in the CAS ranking the journal is in Zone 3 of Mathematics.
Which databases index Numerical Functional Analysis and Optimization?
According to LetPub and DOAJ records, Numerical Functional Analysis and Optimization is indexed in SCIE and Scopus. The journal's website also lists EI Compendex, Web of Science, MathSciNet, zbMATH and Current Contents; that list has not been checked against each database.
Is Numerical Functional Analysis and Optimization open access, and what is the APC?
Numerical Functional Analysis and Optimization is a hybrid journal. For open-access publication: APC charged, amount not published.
Sources and updates
The facts on this page come from LetPub, Publisher website, 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: .