Scimago Journal & Country Rank

Journal of Combinatorial Theory - Series A

Country United States  - SIR icon SIR Ranking of United States
H Index
Subject Area and CategoryComputer Science
Computational Theory and Mathematics

Discrete Mathematics and Combinatorics
Theoretical Computer Science
PublisherElsevier Inc.
Publication typeJournals
Scope The Journal of Combinatorial Theory publishes original mathematical research concerned with theoretical and physical aspects of the study of finite and discrete structures in all branches of science. Series A is concerned primarily with structures, designs, and applications of combinatorics and is a valuable tool for mathematicians and computer scientists.


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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.

Computational Theory and Mathematics1999Q1
Computational Theory and Mathematics2000Q1
Computational Theory and Mathematics2001Q1
Computational Theory and Mathematics2002Q2
Computational Theory and Mathematics2003Q1
Computational Theory and Mathematics2004Q2
Computational Theory and Mathematics2005Q1
Computational Theory and Mathematics2006Q1
Computational Theory and Mathematics2007Q1
Computational Theory and Mathematics2008Q1
Computational Theory and Mathematics2009Q1
Computational Theory and Mathematics2010Q1
Computational Theory and Mathematics2011Q1
Computational Theory and Mathematics2012Q2
Computational Theory and Mathematics2013Q1
Computational Theory and Mathematics2014Q1
Computational Theory and Mathematics2015Q1
Computational Theory and Mathematics2016Q1
Computational Theory and Mathematics2017Q1
Computational Theory and Mathematics2018Q1
Discrete Mathematics and Combinatorics1999Q2
Discrete Mathematics and Combinatorics2000Q2
Discrete Mathematics and Combinatorics2001Q1
Discrete Mathematics and Combinatorics2002Q2
Discrete Mathematics and Combinatorics2003Q2
Discrete Mathematics and Combinatorics2004Q1
Discrete Mathematics and Combinatorics2005Q1
Discrete Mathematics and Combinatorics2006Q1
Discrete Mathematics and Combinatorics2007Q1
Discrete Mathematics and Combinatorics2008Q1
Discrete Mathematics and Combinatorics2009Q1
Discrete Mathematics and Combinatorics2010Q1
Discrete Mathematics and Combinatorics2011Q1
Discrete Mathematics and Combinatorics2012Q1
Discrete Mathematics and Combinatorics2013Q1
Discrete Mathematics and Combinatorics2014Q1
Discrete Mathematics and Combinatorics2015Q1
Discrete Mathematics and Combinatorics2016Q1
Discrete Mathematics and Combinatorics2017Q1
Discrete Mathematics and Combinatorics2018Q1
Theoretical Computer Science1999Q1
Theoretical Computer Science2000Q1
Theoretical Computer Science2001Q1
Theoretical Computer Science2002Q1
Theoretical Computer Science2003Q1
Theoretical Computer Science2004Q1
Theoretical Computer Science2005Q1
Theoretical Computer Science2006Q1
Theoretical Computer Science2007Q1
Theoretical Computer Science2008Q1
Theoretical Computer Science2009Q1
Theoretical Computer Science2010Q1
Theoretical Computer Science2011Q1
Theoretical Computer Science2012Q1
Theoretical Computer Science2013Q1
Theoretical Computer Science2014Q1
Theoretical Computer Science2015Q1
Theoretical Computer Science2016Q1
Theoretical Computer Science2017Q1
Theoretical Computer Science2018Q1

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.

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)19990.551
Cites / Doc. (4 years)20000.573
Cites / Doc. (4 years)20010.495
Cites / Doc. (4 years)20020.542
Cites / Doc. (4 years)20030.545
Cites / Doc. (4 years)20040.490
Cites / Doc. (4 years)20050.724
Cites / Doc. (4 years)20060.779
Cites / Doc. (4 years)20070.793
Cites / Doc. (4 years)20080.914
Cites / Doc. (4 years)20091.024
Cites / Doc. (4 years)20100.886
Cites / Doc. (4 years)20110.989
Cites / Doc. (4 years)20120.910
Cites / Doc. (4 years)20131.047
Cites / Doc. (4 years)20141.026
Cites / Doc. (4 years)20151.120
Cites / Doc. (4 years)20161.076
Cites / Doc. (4 years)20171.162
Cites / Doc. (4 years)20181.124
Cites / Doc. (3 years)19990.551
Cites / Doc. (3 years)20000.498
Cites / Doc. (3 years)20010.525
Cites / Doc. (3 years)20020.513
Cites / Doc. (3 years)20030.554
Cites / Doc. (3 years)20040.443
Cites / Doc. (3 years)20050.759
Cites / Doc. (3 years)20060.758
Cites / Doc. (3 years)20070.862
Cites / Doc. (3 years)20080.945
Cites / Doc. (3 years)20091.017
Cites / Doc. (3 years)20100.795
Cites / Doc. (3 years)20110.989
Cites / Doc. (3 years)20120.936
Cites / Doc. (3 years)20131.116
Cites / Doc. (3 years)20141.022
Cites / Doc. (3 years)20151.080
Cites / Doc. (3 years)20161.086
Cites / Doc. (3 years)20171.140
Cites / Doc. (3 years)20181.126
Cites / Doc. (2 years)19990.500
Cites / Doc. (2 years)20000.416
Cites / Doc. (2 years)20010.503
Cites / Doc. (2 years)20020.455
Cites / Doc. (2 years)20030.556
Cites / Doc. (2 years)20040.471
Cites / Doc. (2 years)20050.707
Cites / Doc. (2 years)20060.776
Cites / Doc. (2 years)20070.867
Cites / Doc. (2 years)20080.958
Cites / Doc. (2 years)20090.855
Cites / Doc. (2 years)20100.724
Cites / Doc. (2 years)20110.911
Cites / Doc. (2 years)20120.930
Cites / Doc. (2 years)20131.147
Cites / Doc. (2 years)20140.980
Cites / Doc. (2 years)20151.096
Cites / Doc. (2 years)20160.968
Cites / Doc. (2 years)20171.103
Cites / Doc. (2 years)20181.113
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 Cites199921
Self Cites200022
Self Cites200114
Self Cites200220
Self Cites200323
Self Cites200424
Self Cites200518
Self Cites200619
Self Cites200717
Self Cites200832
Self Cites200923
Self Cites201015
Self Cites201135
Self Cites201233
Self Cites201360
Self Cites201430
Self Cites201539
Self Cites201618
Self Cites201716
Self Cites201833
Total Cites1999125
Total Cites2000122
Total Cites2001124
Total Cites2002136
Total Cites2003154
Total Cites2004133
Total Cites2005217
Total Cites2006201
Total Cites2007244
Total Cites2008277
Total Cites2009292
Total Cites2010210
Total Cites2011262
Total Cites2012334
Total Cites2013413
Total Cites2014424
Total Cites2015379
Total Cites2016352
Total Cites2017294
Total Cites2018285
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 document19990.458
External Cites per document20000.408
External Cites per document20010.466
External Cites per document20020.438
External Cites per document20030.471
External Cites per document20040.363
External Cites per document20050.696
External Cites per document20060.687
External Cites per document20070.802
External Cites per document20080.836
External Cites per document20090.937
External Cites per document20100.739
External Cites per document20110.857
External Cites per document20120.843
External Cites per document20130.954
External Cites per document20140.949
External Cites per document20150.969
External Cites per document20161.031
External Cites per document20171.078
External Cites per document20180.996
Cites per document19990.551
Cites per document20000.498
Cites per document20010.525
Cites per document20020.513
Cites per document20030.554
Cites per document20040.443
Cites per document20050.759
Cites per document20060.758
Cites per document20070.862
Cites per document20080.945
Cites per document20091.017
Cites per document20100.795
Cites per document20110.989
Cites per document20120.936
Cites per document20131.116
Cites per document20141.022
Cites per document20151.080
Cites per document20161.086
Cites per document20171.140
Cites per document20181.126
% 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 documents19990
Non-citable documents20000
Non-citable documents20010
Non-citable documents20023
Non-citable documents20034
Non-citable documents200412
Non-citable documents200510
Non-citable documents200610
Non-citable documents20074
Non-citable documents20084
Non-citable documents20093
Non-citable documents20101
Non-citable documents20110
Non-citable documents20122
Non-citable documents20133
Non-citable documents20144
Non-citable documents20152
Non-citable documents20161
Non-citable documents20171
Non-citable documents20181
Citable documents1999227
Citable documents2000245
Citable documents2001236
Citable documents2002265
Citable documents2003278
Citable documents2004300
Citable documents2005286
Citable documents2006265
Citable documents2007283
Citable documents2008293
Citable documents2009287
Citable documents2010264
Citable documents2011265
Citable documents2012357
Citable documents2013370
Citable documents2014415
Citable documents2015351
Citable documents2016324
Citable documents2017258
Citable documents2018253
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 documents1999145
Uncited documents2000162
Uncited documents2001159
Uncited documents2002175
Uncited documents2003179
Uncited documents2004228
Uncited documents2005169
Uncited documents2006165
Uncited documents2007153
Uncited documents2008161
Uncited documents2009138
Uncited documents2010147
Uncited documents2011132
Uncited documents2012185
Uncited documents2013178
Uncited documents2014215
Uncited documents2015170
Uncited documents2016145
Uncited documents2017120
Uncited documents2018126
Cited documents199982
Cited documents200083
Cited documents200177
Cited documents200293
Cited documents2003103
Cited documents200484
Cited documents2005127
Cited documents2006110
Cited documents2007134
Cited documents2008136
Cited documents2009152
Cited documents2010118
Cited documents2011133
Cited documents2012174
Cited documents2013195
Cited documents2014204
Cited documents2015183
Cited documents2016180
Cited documents2017139
Cited documents2018128
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