What is the Impact Factor of Journal of Operator Theory?

According to the latest Clarivate Journal Citation Reports (JCR), the Journal Impact Factor of Journal of Operator Theory is 0.70, ranking in quartile Q3 of Web of Science (SCIE).

Is Journal of Operator Theory indexed in Web of Science or Scopus?

Yes, Journal of Operator Theory is indexed in Web of Science (SCIE, Q3 quartile). Furthermore, in Scopus (SCImago), it holds an SJR rating of 0.580 (Q2) and an H-index of 44.

Who publishes Journal of Operator Theory and what is the Article Processing Charge (APC)?

Journal of Operator Theory is published by Theta Foundation. The estimated Article Processing Charge (APC) is approximately $3,104 USD, subject to institutional waivers and corresponding author affiliations.

What is the ISO-4 abbreviation and acronym of Journal of Operator Theory?

The official ISO-4 abbreviation of Journal of Operator Theory is "J OPERAT THEOR". This standardized title abbreviation is used in citation lists conforming to IEEE, APA, Harvard, or Vancouver styles.

WoS SCIE Q3Scopus Q2SCImago #10,217Hybrid

Journal of Operator Theory

Abbreviation (ISO):J OPERAT THEOR

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Identifier (ISSN):0379-4024(Print)

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Publisher:Theta Foundation

Official Website Submission Portal Compare

Clarivate IF (2026)

0.7↓ -0.3

Journal Impact Factor

IF Trend↓

WoS Quartile

WoS SCIEJCR Quartile

Clarivate WoS JCR

WoS Categories↓

JCR Release Date: 2026-06-17

Impact Factor Trend (2018–2026)

Clarivate IF trend for Journal of Operator Theory

WoS Q3

Annual Impact Factor Metric

Current (2026):0.7

Scopus SJR & RankScopus Q2

0.58

#10,217

SCImago Journal Rank citation prestige weighting

Scopus Year: 2025

H-Index (2025)

44 papers with at least that number of citations each

WoS: SCIE / JCRQ3

Self-Citation Rate0%

Safe Level (< 15%)Warning Level (> 20%)

Self-citation below 15% indicates strong scholarly independence.

Volume & Open AccessHybrid

37articles/year

0.78% Gold OA•100% Original Research

Aims & Scope

The Journal of Operator Theory is rigorously peer reviewed and endevours to publish significant articles in all areas of operator theory, operator algebras and closely related domains.

Topics Covered (Recognized by AI)

Mathematics98.2%Pure mathematics88.4%Physics58.3%Mathematical analysis55.3%Discrete mathematics54.3%Quantum mechanics51.2%Algebra over a field49.8%Combinatorics46%Computer science43.4%Philosophy36.5%Chemistry34.7%Biology31.6%Geometry29.6%Genetics22.3%Linguistics22.3%Biochemistry21.3%Programming language20.6%Epistemology20.3%Gene20.3%

Primary Research Areas

Mathematics

Official Website NLM PubMed Catalog Submission Portal SCImago Profile

0 calls

Special Issues

Calls for Papers

No active Calls for Papers found for this journal.

Expand

WoS Categories & Quartiles

Detailed JCR / JCI category rankings and quartile breakdown from Clarivate

Clarivate JCR & JCI

JCRSCIE2026

MATHEMATICS

Rank259/492

IndexSCIE

JCISCIE2026

MATHEMATICS

Rank222/492

IndexSCIE

Category	Index	Rank	Quartile
MATHEMATICS	JCRSCIE	259/492	Q3
MATHEMATICS	JCISCIE	222/492	Q2

Annual Historical Statistics & Publications

Track annual publication volume, total citations, and Impact Factor evolution

12 year

2026Latest

IF0.7

Articles / Year36

Total Citations220

2025

IF1

Articles / Year48

Total Citations25

2024

IF0.7

Articles / Year48

Total Citations40

2023

IF0.8

Articles / Year35

Total Citations44

2022

IF0.905

Articles / Year31

Total Citations72

Year	Impact Factor	Articles / Year	Total Citations
2026	0.7	36	220
2025	1	48	25
2024	0.7	48	40
2023	0.8	35	44
2022	0.905	31	72
2021	1.013	61	202
2020	0.69	33	179
2019	0.667	39	200
2018	0.543	46	149
2017	—	49	174
2016	—	48	192
2015	—	53	336

SCImago & Scopus Journal Intelligence

Global SCImago ranking, SJR prestige index, Scopus coverage, and societal policy impact

Rank #10,217Scopus Q2SCImago Profile

Scopus Coverage:1996-1998, 2000-2025

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Scopus Broad Areas:Mathematics

Scopus Citation Rank (SJR)Q2

0.58

Weighted prestige citation metric per document indexed in the Scopus database.

Quartile: Scopus Q2

Citations / Doc (2 years)

0.61

Average citations received per document published in the 2-year window.

2-Year Citation Window

Estimated Publication Fee (APC)

$3,104 USD

Estimated Article Processing Charge for Open Access publication.

Estimated cost / article

Scopus 3-Year Publication & Citation Window

3-Year Citations89

3-Year Documents126

Citable Documents126

Aggregated from Scopus database across the 3-year SJR evaluation window.

Societal Impact & Inclusivity (SCImago)

Policy Citations (Overton)0

Citations in government and international policy documents

Female Author Rate23.4%

Percentage of female authors published in the journal

Real-world societal policy reach and author gender diversity tracked by SCImago.

Scopus Subject Categories

Algebra and Number TheoryQ2

Academic Metric Intelligence

Journal Metrics & Citation Visualizations

Total Cites vs Self-Cites

Evaluation of scholarly independence and citation reach

Total citations steady growth

Self-citation: 0%

Citations per Document

Citation metric windows across 2, 3, and 4 years

Cites / Doc (4 years)Cites / Doc (3 years)Cites / Doc (2 years)

Chinese Academy of Sciences (CAS) Classification

Major / minor zone classification and CAS Early Warning List history

Major Category (Broad Field):

2区 (Zone 2)Mathematics

Minor Category (Specific Field):

2区MATHEMATICS

CAS Early Warning List History:

Updated annually: 2020 – 2024

2020

Not warned

2021

Not warned

2022

Not warned

2023

Not warned

2024

Not warned

Academic Intelligence Overview & Context

ImpaQ Analysis

Journal of Operator Theory (abbr: J OPERAT THEOR, ISSN: 0379-4024) is a peer-reviewed international scholarly journal in the field of Mathematics, published by Theta Foundation in Romania. The periodical holds a Journal Impact Factor (JIF) of 0.70, ranking in quartile Q3 of Web of Science (SCIE), a Scopus SJR indicator of 0.580 (Q2), an H-index of 44.

The journal enforces rigorous peer evaluation with a publication frequency of Quarterly, an annual output of approximately 37 scientific articles. In terms of accessibility and author fees, it operates under the Hybrid model with an estimated APC of $3,104 USD. It serves as a benchmark publication platform for academics, researchers, and doctoral candidates seeking global research visibility.