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Journal of Operator Theory

Theta Foundation · Romania

ISSN0379-4024eISSN1841-7744

SJR Q2✓ WOS SCIE✓ Scopus / SJR

Impact Factor & Quartile · Web of Science (JCR)

✓ Indexed in the Web of Science Core Collection (SCIE) — Clarivate publishes an official Journal Impact Factor and JCR quartile for this journal.

See the official Impact Factor & quartile on the journal’s page ↗

The Impact Factor & JCR quartile are licensed by Clarivate — we link you to the official source instead of reprinting a number that can go out of date. Open metrics below: SCImago Q2. Source: Clarivate Journal Citation Reports.

📊 Standing in its field

Where this journal ranks among others in the same subject area.

SJR · Scopus

Top 50% in field

Clarivate’s JCR quartile is a separate ranking and may differ

SJR Scorei

0.58

H-Indexi

SNIPi

1.09

Total Worksi

669

Total Citationsi

3,452

2yr Mean Citednessi

2.35

Open Impact Factor alternative

Retractions

Source: Retraction Watch

Aims & Scope

Subject areas: Mathematics; Algebra and Number Theory.

General Information

Country / RegionRomania

Primary LanguageEnglish

1st Year Published—

FrequencyQuarterly

StatusActive

Total Publications669

Visit Journal Website

Submission Info

Publishing ModelSubscription

Peer ReviewSingle-blind peer review

OA LicenseCC BY-NC-ND 4.0

OA Rate—

Ethics & Quality

COPE Member✗ No

OASPA Member✗ No

Not on Predatory Lists✓ Yes

Think.Check.Submit Compliance

thinkchecksubmit.org

7/11 · 64%

✅

Do you know the journal / publisher?

Theta Foundation

✅

Does the journal have a website?

✓ Linked

✅

Is the ISSN verified?

0379-4024 / 1841-7744

✅

Indexed in a trusted database?

WoS, Scopus

✅

Peer review process documented?

Single-blind peer review

❌

Follows ethical publishing standards (COPE)?

N/A

✅

Not on predatory/blacklists?

✓ Clean

❌

Long-term digital preservation?

N/A

❌

Plagiarism detection in place?

N/A

❌

Listed in DOAJ (verified OA)?

N/A

✅

Primary language documented?

English

A twelfth criterion — whether APC fees are clearly disclosed — is not scored here; it is left out of the total rather than counted as a failure. Publication charges appear in the metrics card above.

Based on the Think.Check.Submit framework by DOAJ, COPE & OASPA. All data from verified open sources.

Publication & Citation Trend

Articles published

Citations received

200

2019

178

2020

202

2021

2022

2023

2024

2025

220

2026

Source: OpenAlex · Each year’s green bar = citations earned by that year’s papers, counted to date — so recent years look lower simply because their papers haven’t had time to be cited yet.

SJR Quartile by Discipline

Scimago ranks this journal separately in each subject category — its quartile can differ by discipline.

Algebra and Number TheoryQ2

Subject Classification

Web of Science Categories

Mathematics

Scopus Categories

Algebra and Number Theory

Research Topics (OpenAlex)

Advanced Operator Algebra ResearchAdvanced Topics in AlgebraHolomorphic and Operator TheorySpectral Theory in Mathematical PhysicsAdvanced Banach Space Theory

Frequently asked questions about Journal of Operator Theory

Is Journal of Operator Theory a predatory journal?

PubScope has no integrity flags on record for Journal of Operator Theory: it is indexed in Web of Science, Scopus, and is not on DOAJ's withdrawn list. Indexing is a transparency signal, not a guarantee — always confirm fit and policies before submitting.

What is the impact factor of Journal of Operator Theory?

Journal of Operator Theory is indexed in the Web of Science Core Collection, so Clarivate publishes an official Journal Impact Factor for it (since the 2023 Journal Citation Reports, every Core Collection journal — including Arts & Humanities and Emerging Sources titles — receives one). PubScope links to Clarivate's official source rather than reprinting the number, which can be out of date. Its open 2-year mean citedness is 2.35.

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

Journal of Operator Theory is indexed in Web of Science, Scopus.

What is the aims and scope of Journal of Operator Theory?