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Integral Equations and Operator Theory is Scopus-indexed (Q2, CiteScore 1.6), WoS SCIE. It is covered by India's One Nation One Subscription scheme for reading access. Published by Springer International Publishing.
Checked against the index lists dated .
ISSN 0378-620XVerify ISSN ↗1420-8989Verify ISSN ↗
Publisher: Springer International Publishing
Cost to publish: About US$3,290 to publish open access (publisher list price, via OpenAlex) — subscription publishing may be free
| Subject area | Rank | Pctile | Q |
|---|---|---|---|
| Algebra and Number Theory | 42 / 137 | 69th | Q2 |
| Analysis | 107 / 210 | 49th | Q3 |
Not listed in: DOAJ, ABDC, ABS / AJG, FT50, UT Dallas, ONOS (APC covered)
Yes — actively indexed in Scopus, coverage 1978–present, best quartile Q2, CiteScore 1.6.
Integral Equations and Operator Theory is Q2 in Algebra and Number Theory (rank 42 of 137) and Q3 in Analysis (rank 107 of 210), by CiteScore 2025.
Integral Equations and Operator Theory is indexed in the Science Citation Index Expanded, so it may have a Journal Impact Factor in Clarivate's Journal Citation Reports. JCR is paid, so check it for the current value. The closest free measure is its Scopus CiteScore 1.6, which places it in quartile Q2 at the 69th percentile of its subject. Its SCImago Journal Rank (SJR, a free Scopus-based metric) is 0.578, quartile Q2, with an H-index of 55.
The publisher lists an article processing charge of about US$3,290 for open access (source: OpenAlex). Many journals also publish by the subscription route at no cost to the author, so confirm on the journal's own website.
Integral Equations and Operator Theory is published by Springer International Publishing. Its print ISSN is 0378-620X and its online ISSN is 1420-8989.
Yes. It is part of the One Nation One Subscription (ONOS) national subscription, so readers at participating Indian institutions get its full text. ONOS does not cover its article processing charge.
Yes — indexed in the Science Citation Index Expanded.
No — it is not registered as an open-access journal in DOAJ or Scopus.
Integral Equations and Operator Theory has an h-index of 78 and a 2-year mean of 0.78 citations per paper (OpenAlex). Its Scopus CiteScore is 1.6, quartile Q2. On 2-year citations it ranks #46 of 129 Scopus journals in Algebra and Number Theory.
Integral Equations and Operator Theory published 29 papers in 2025; its busiest recent year was 2017 with 75. 2026* is the year so far.
h-index, i10-index and 2-year mean citedness are open, licence-clear metrics from OpenAlex — not a proprietary impact factor. The subject rank counts only journals that OpenAlex has a figure for; it is not a Scopus or Clarivate ranking. Updated 2026-10-14.
In its latest 97 research articles (2024–2026), authors are most often from Germany (15.3%), United States (14.7%) and Canada (6.2%).
Countries are counted fractionally, so a paper by authors from two countries counts half to each.
Scopus status: Active. No retracted papers are recorded. The Problematic Paper Screener flags none of its papers. These are indicators to check, not findings against the journal.
Retractions from OpenAlex; flags from the Problematic Paper Screener (Cabanac, Labbé & Magazinov, CC BY), 2026-09-21 export. A flag marks a paper for a closer look; it is not a finding against the journal.
Index data is curated from public sources (Scopus, Web of Science, ABDC, FT50, UT Dallas, DOAJ). CiteScore and quartiles reflect the latest available Scopus release. Always verify a journal's current status on its official source before submitting.
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