ImpaQ Ecosystem•Clarivate, Scopus & CORE Data
Clarivate WoS 2024 / 2025 Data
IMPAQ
WoS SCIE Q2Scopus Q1SCImago #5,353Diamond OAHybrid

Journal of Spectral Theory

Abbreviation (ISO):J. SPECTRAL THEORY
•
Identifier (ISSN):1664-039X(Print)/1664-0403(Online)
•
Publisher:European Mathematical Society Publishing House
Clarivate IF (2026)
0.9↑ +0.1
Journal Impact Factor
IF Trend↓
WoS Quartile
Q2
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 Spectral Theory

WoS Q2
01120.8420181.2120191.1320201.3220211.11202212023120240.820250.92026
Annual Impact Factor Metric
Current (2026):0.9
Scopus SJR & RankScopus Q1
0.946
#5,353

SCImago Journal Rank citation prestige weighting

Scopus Year: 2025
H-Index (2025)
23

23 papers with at least that number of citations each

WoS: SCIE / JCRQ2
Self-Citation Rate0%
Safe Level (< 15%)Warning Level (> 20%)
Self-citation below 15% indicates strong scholarly independence.
Volume & Open AccessHybrid
55articles/year
99.28% Gold OA•100% Original Research

Aims & Scope

The Journal of Spectral Theory is devoted to the publication of research articles that focus on spectral theory and its many areas of application. Articles of all lengths including surveys of parts of the subject are very welcome. The following list includes several aspects of spectral theory and also fields which feature substantial applications of (or to) spectral theory. Schrödinger operators, scattering theory and resonances; eigenvalues: perturbation theory, asymptotics and inequalities; quantum graphs, graph Laplacians; pseudo-differential operators and semi-classical analysis; random matrix theory; the Anderson model and other random media; non-self-adjoint matrices and operators, including Toeplitz operators; spectral geometry, including manifolds and automorphic forms; linear and nonlinear differential operators, especially those arising in geometry and physics; orthogonal polynomials; inverse problems.

Topics Covered (Recognized by AI)
Mathematics91.1%Physics87.8%Quantum mechanics84%Mathematical analysis80%Pure mathematics63.8%Biology40.2%Eigenvalues and eigenvectors40%Chemistry39.8%Combinatorics39.6%Computer science37.6%Geometry36.4%Mathematical physics35.6%Genetics34.9%Biochemistry31.6%Gene30.4%Gene expression30.2%Repressor30.2%Transcription factor30.2%Operator (biology)30.2%Philosophy28.9%Discrete mathematics25.8%
Primary Research Areas

WoS Categories & Quartiles

Detailed JCR / JCI category rankings and quartile breakdown from Clarivate

Clarivate JCR & JCI
JCRSCIE2026

MATHEMATICS

Q2
Rank179/492
IndexSCIE
JCRSCIE2026

MATHEMATICS, APPLIED

Q3
Rank225/345
IndexSCIE
JCISCIE2026

MATHEMATICS

Q2
Rank197/492
IndexSCIE
JCISCIE2026

MATHEMATICS, APPLIED

Q2
Rank170/345
IndexSCIE

Annual Historical Statistics & Publications

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

12 year
2026Latest
IF0.9
Articles / Year34
Total Citations26
2025
IF0.8
Articles / Year49
Total Citations30
2024
IF1
Articles / Year60
Total Citations152
2023
IF1
Articles / Year58
Total Citations169
2022
IF1.106
Articles / Year29
Total Citations136

SCImago & Scopus Journal Intelligence

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

Rank #5,353Scopus Q1Diamond OASCImago Profile
Scopus Coverage:2011-2025
Scopus Broad Areas:MathematicsPhysics and Astronomy
Scopus Citation Rank (SJR)Q1
0.946

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

Quartile: Scopus Q1
Citations / Doc (2 years)
0.88

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

2-Year Citation Window
Estimated Publication Fee (APC)
100% Free

Diamond Open Access: Authors publish completely free of charge with zero author-facing fees.

Diamond Open Access

Scopus 3-Year Publication & Citation Window

3-Year Citations140
3-Year Documents136
Citable Documents136

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 Rate17.3%

Percentage of female authors published in the journal

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

Scopus Subject Categories

Geometry and TopologyQ1
Mathematical PhysicsQ1
Statistical and Nonlinear PhysicsQ1
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):
4区 (Zone 4)Mathematics
Minor Category (Specific Field):
4区MATHEMATICS, APPLIED
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 Spectral Theory (abbr: J. SPECTRAL THEORY, ISSN: 1664-039X) is a peer-reviewed international scholarly journal in the field of MATHEMATICS, published by European Mathematical Society Publishing House in Switzerland. The periodical holds a Journal Impact Factor (JIF) of 0.90, ranking in quartile Q2 of Web of Science (SCIE), a Scopus SJR indicator of 0.946 (Q1), an H-index of 23.

The journal enforces rigorous peer evaluation with an annual output of approximately 55 scientific articles. In terms of accessibility and author fees, it operates under the Hybrid model with Diamond Open Access (100% free of author APC charges). It serves as a benchmark publication platform for academics, researchers, and doctoral candidates seeking global research visibility.

Publishing & Editorial Information

Detailed publisher, peer-review turnaround, and publication cycle specifications

Open Access Model
Hybrid
Publisher
European Mathematical Society Publishing House
Publication Language
English
Frequency
Periodic
Indexing & Databases
SCIEScopusPubMed
Editorial Address
PUBLISHING HOUSE GMBH INST MATHEMATIK TECHNISCHE UNIV BERLIN STRASSE 17, JUNI 136, BERLIN, Germany, 10623

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Record UUID: adad812e-5c0c-4ab0-8fec-3b956d0617d6
Database Updated: 2026-10-01