Scimago Journal & Country Rank

Forum of Mathematics, Sigmaopen access


United Kingdom

Universities and research institutions in United Kingdom

Subject Area and Category


Cambridge University Press



Publication type








How to publish in this journal


Forum of Mathematics, Sigma is the open access alternative to the leading specialist mathematics journals. Editorial decisions are made by dedicated clusters of editors concentrated in the following areas: foundations of mathematics, discrete mathematics, algebra, number theory, algebraic and complex geometry, differential geometry and geometric analysis, topology, analysis, probability, differential equations, computational mathematics, applied analysis, mathematical physics, and theoretical computer science. This classification exists to aid the peer review process. Contributions which do not neatly fit within these categories are still welcome. Forum of Mathematics, Pi and Forum of Mathematics, Sigma are an exciting new development in journal publishing. Together they offer fully open access publication combined with peer-review standards set by an international editorial board of the highest calibre, and all backed by Cambridge University Press and our commitment to quality. Strong research papers from all parts of pure mathematics and related areas will be welcomed. Join the conversation about this journal

The set of journals have been ranked according to their SJR and divided into four equal groups, four quartiles. Q1 (green) comprises the quarter of the journals with the highest values, Q2 (yellow) the second highest values, Q3 (orange) the third highest values and Q4 (red) the lowest values.

Algebra and Number Theory2019Q1
Algebra and Number Theory2020Q1
Computational Mathematics2019Q1
Computational Mathematics2020Q1
Discrete Mathematics and Combinatorics2019Q1
Discrete Mathematics and Combinatorics2020Q1
Geometry and Topology2019Q1
Geometry and Topology2020Q1
Mathematical Physics2019Q1
Mathematical Physics2020Q1
Statistics and Probability2019Q1
Statistics and Probability2020Q1
Theoretical Computer Science2019Q1
Theoretical Computer Science2020Q1

The SJR is a size-independent prestige indicator that ranks journals by their 'average prestige per article'. It is based on the idea that 'all citations are not created equal'. SJR is a measure of scientific influence of journals that accounts for both the number of citations received by a journal and the importance or prestige of the journals where such citations come from It measures the scientific influence of the average article in a journal, it expresses how central to the global scientific discussion an average article of the journal is.

Total Documents

Evolution of the number of published documents. All types of documents are considered, including citable and non citable documents.

Citations per document

This indicator counts the number of citations received by documents from a journal and divides them by the total number of documents published in that journal. The chart shows the evolution of the average number of times documents published in a journal in the past two, three and four years have been cited in the current year. The two years line is equivalent to journal impact factor ™ (Thomson Reuters) metric.

Cites per documentYearValue
Cites / Doc. (4 years)20130.000
Cites / Doc. (4 years)20140.400
Cites / Doc. (4 years)20151.030
Cites / Doc. (4 years)20161.131
Cites / Doc. (4 years)20173.301
Cites / Doc. (4 years)20183.625
Cites / Doc. (4 years)20193.546
Cites / Doc. (4 years)20203.275
Cites / Doc. (3 years)20130.000
Cites / Doc. (3 years)20140.400
Cites / Doc. (3 years)20151.030
Cites / Doc. (3 years)20161.131
Cites / Doc. (3 years)20173.341
Cites / Doc. (3 years)20183.315
Cites / Doc. (3 years)20193.551
Cites / Doc. (3 years)20203.455
Cites / Doc. (2 years)20130.000
Cites / Doc. (2 years)20140.400
Cites / Doc. (2 years)20151.030
Cites / Doc. (2 years)20161.125
Cites / Doc. (2 years)20173.083
Cites / Doc. (2 years)20183.203
Cites / Doc. (2 years)20193.676
Cites / Doc. (2 years)20202.556
Total Cites 

Evolution of the total number of citations and journal's self-citations received by a journal's published documents during the three previous years.
Journal Self-citation is defined as the number of citation from a journal citing article to articles published by the same journal.

Self Cites20130
Self Cites20140
Self Cites20150
Self Cites20160
Self Cites20170
Self Cites20180
Self Cites20192
Self Cites20201
Total Cites20130
Total Cites20142
Total Cites201534
Total Cites201669
Total Cites2017294
Total Cites2018305
Total Cites2019245
Total Cites2020266
External Cites per Doc 
Cites per Doc

Evolution of the number of total citation per document and external citation per document (i.e. journal self-citations removed) received by a journal's published documents during the three previous years. External citations are calculated by subtracting the number of self-citations from the total number of citations received by the journal’s documents.

External Cites per document20130
External Cites per document20140.400
External Cites per document20151.030
External Cites per document20161.131
External Cites per document20173.341
External Cites per document20183.315
External Cites per document20193.522
External Cites per document20203.442
Cites per document20130.000
Cites per document20140.400
Cites per document20151.030
Cites per document20161.131
Cites per document20173.341
Cites per document20183.315
Cites per document20193.551
Cites per document20203.455
% International Collaboration

International Collaboration accounts for the articles that have been produced by researchers from several countries. The chart shows the ratio of a journal's documents signed by researchers from more than one country; that is including more than one country address.

YearInternational Collaboration
Citable documents 
Non-citable documents

Not every article in a journal is considered primary research and therefore "citable", this chart shows the ratio of a journal's articles including substantial research (research articles, conference papers and reviews) in three year windows vs. those documents other than research articles, reviews and conference papers.

Non-citable documents20130
Non-citable documents20140
Non-citable documents20150
Non-citable documents20160
Non-citable documents20170
Non-citable documents20180
Non-citable documents20190
Non-citable documents20200
Citable documents20130
Citable documents20145
Citable documents201533
Citable documents201661
Citable documents201788
Citable documents201892
Citable documents201969
Citable documents202077
Cited documents 
Uncited documents

Ratio of a journal's items, grouped in three years windows, that have been cited at least once vs. those not cited during the following year.

Uncited documents20130
Uncited documents20143
Uncited documents201516
Uncited documents201632
Uncited documents201715
Uncited documents201814
Uncited documents20199
Uncited documents202010
Cited documents20130
Cited documents20142
Cited documents201517
Cited documents201629
Cited documents201773
Cited documents201878
Cited documents201960
Cited documents202067
Scimago Journal & Country Rank
Show this widget in your own website

Just copy the code below and paste within your html code:
Metrics based on Scopus® data as of April 2021
Loading comments…

Leave a comment

* Required

* Required

* Required

* Required

The users of Scimago Journal & Country Rank have the possibility to dialogue through comments linked to a specific journal. The purpose is to have a forum in which general doubts about the processes of publication in the journal, experiences and other issues derived from the publication of papers are resolved. For topics on particular articles, maintain the dialogue through the usual channels with your editor.

Developed by:
Scimago Lab
Powered by:
Powered by scopus

Follow us on @ScimagoJR

Scimago Lab, Copyright 2007-2020. Data Source: Scopus®