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Forum of Mathematics, Sigma
Forum of Mathematics, Sigma is Scopus-indexed (Q1, CiteScore 1.9), WoS SCIE, DOAJ. It is covered by India's One Nation One Subscription scheme for reading access. Published by Cambridge University Press.
ONOS · SubscriptionOne Nation One Subscription — full-text access
This journal is part of the ONOS national subscription — readers at an ONOS-subscribed Indian institution get full-text access to its articles at no cost.
Access depends on your institution’s ONOS participation; the subscribed title list is subject to revision.
Not listed in:ABDC, ABS / AJG, FT50, UT Dallas, ONOS (APC covered)
Quick answers
Is Forum of Mathematics, Sigma indexed in Scopus?
Yes — actively indexed in Scopus, coverage 2013–present, best quartile Q1, CiteScore 1.9.
What quartile is Forum of Mathematics, Sigma in Scopus?
Forum of Mathematics, Sigma is Q1 in Algebra and Number Theory (rank 32 of 137), Q2 in Geometry and Topology (rank 32 of 111) and Q2 in Discrete Mathematics and Combinatorics (rank 34 of 99), by CiteScore 2025. It is ranked in 8 subject areas in all.
What is the impact factor of Forum of Mathematics, Sigma?
Forum of Mathematics, Sigma 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 1.9, which places it in quartile Q1 at the 77th percentile of its subject. Its SCImago Journal Rank (SJR, a free Scopus-based metric) is 1.635, quartile Q1, with an H-index of 29.
How much does it cost to publish in Forum of Mathematics, Sigma?
The publisher lists an article processing charge of about US$2,650 for open access (source: OpenAlex). Many journals also publish by the subscription route at no cost to the author, so confirm on the journal's own website.
Who publishes Forum of Mathematics, Sigma and what is its ISSN?
Forum of Mathematics, Sigma is published by Cambridge University Press. Its ISSN is 2050-5094.
Is Forum of Mathematics, Sigma covered under ONOS in India?
Yes. It is part of the One Nation One Subscription (ONOS) national subscription, so readers at participating Indian institutions get its full text. ONOS does not cover its article processing charge.
Is Forum of Mathematics, Sigma in Web of Science?
Yes — indexed in the Science Citation Index Expanded.
Is Forum of Mathematics, Sigma open access?
Yes — it is an open-access journal, listed in DOAJ.
How well cited is Forum of Mathematics, Sigma? — open metrics via OpenAlex
Forum of Mathematics, Sigma has an h-index of 31 and a 2-year mean of 1.09 citations per paper (OpenAlex). Its Scopus CiteScore is 1.9, quartile Q1. On 2-year citations it ranks #24 of 129 Scopus journals in Algebra and Number Theory.
31
h-index
1.09
2-yr mean citations
156
i10-index
1,032
works indexed
5,833
total citations
Publication fee · open access list price, US$
US$2,650
05001,0002,0003,000+
2-yr mean citations, among Scopus journals in the same subject
#24 of 129Top 19%Algebra and Number Theory
#26 of 105Top 25%Geometry and Topology
#18 of 92Top 20%Discrete Mathematics and Combinatorics
Papers published per year
Forum of Mathematics, Sigma published 198 papers in 2025. 2026* is the year so far.
Main topics
Algebraic Geometry and Number TheoryAdvanced Algebra and GeometryAlgebraic structures and combinatorial modelsHomotopy and Cohomology in Algebraic Topology
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.
Who publishes in Forum of Mathematics, Sigma? — latest 100 articles, 2026
In its latest 100 research articles (2026), authors are most often from United States (22.1%), United Kingdom (16%) and Germany (11.7%).
Countries are counted fractionally, so a paper by authors from two countries counts half to each.
Are there integrity warnings for Forum of Mathematics, Sigma? — indicators, not proof of misconduct
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.
Scopus statusActive
Retracted papersNone recorded
Problematic Paper Screener flagsNone flagged
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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