Scimago Journal & Country Rank

Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences


United Kingdom

Universities and research institutions in United Kingdom

Subject Area and Category


The Royal Society



Publication type





1947, 1969-1971, 1974-1975, 1977-1988, 1991-2020



How to publish in this journal


Continuing its long history of influential scientific publishing, Philosophical Transactions A publishes high-quality theme issues on topics of current importance and general interest within the physical, mathematical and engineering sciences, guest-edited by leading authorities and comprising new research, reviews and opinions from prominent researchers. 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.

Engineering (miscellaneous)1999Q1
Engineering (miscellaneous)2000Q1
Engineering (miscellaneous)2001Q1
Engineering (miscellaneous)2002Q1
Engineering (miscellaneous)2003Q1
Engineering (miscellaneous)2004Q1
Engineering (miscellaneous)2005Q1
Engineering (miscellaneous)2006Q1
Engineering (miscellaneous)2007Q1
Engineering (miscellaneous)2008Q1
Engineering (miscellaneous)2009Q1
Engineering (miscellaneous)2010Q1
Engineering (miscellaneous)2011Q1
Engineering (miscellaneous)2012Q1
Engineering (miscellaneous)2013Q1
Engineering (miscellaneous)2014Q1
Engineering (miscellaneous)2015Q1
Engineering (miscellaneous)2016Q1
Engineering (miscellaneous)2017Q1
Engineering (miscellaneous)2018Q1
Engineering (miscellaneous)2019Q1
Mathematics (miscellaneous)1999Q2
Mathematics (miscellaneous)2000Q2
Mathematics (miscellaneous)2001Q2
Mathematics (miscellaneous)2002Q2
Mathematics (miscellaneous)2003Q2
Mathematics (miscellaneous)2004Q2
Mathematics (miscellaneous)2005Q1
Mathematics (miscellaneous)2006Q1
Mathematics (miscellaneous)2007Q1
Mathematics (miscellaneous)2008Q2
Mathematics (miscellaneous)2009Q1
Mathematics (miscellaneous)2010Q1
Mathematics (miscellaneous)2011Q1
Mathematics (miscellaneous)2012Q1
Mathematics (miscellaneous)2013Q1
Mathematics (miscellaneous)2014Q2
Mathematics (miscellaneous)2015Q2
Mathematics (miscellaneous)2016Q1
Mathematics (miscellaneous)2017Q1
Mathematics (miscellaneous)2018Q1
Mathematics (miscellaneous)2019Q1
Physics and Astronomy (miscellaneous)1999Q2
Physics and Astronomy (miscellaneous)2000Q2
Physics and Astronomy (miscellaneous)2001Q2
Physics and Astronomy (miscellaneous)2002Q2
Physics and Astronomy (miscellaneous)2003Q2
Physics and Astronomy (miscellaneous)2004Q2
Physics and Astronomy (miscellaneous)2005Q2
Physics and Astronomy (miscellaneous)2006Q1
Physics and Astronomy (miscellaneous)2007Q1
Physics and Astronomy (miscellaneous)2008Q2
Physics and Astronomy (miscellaneous)2009Q2
Physics and Astronomy (miscellaneous)2010Q1
Physics and Astronomy (miscellaneous)2011Q1
Physics and Astronomy (miscellaneous)2012Q1
Physics and Astronomy (miscellaneous)2013Q1
Physics and Astronomy (miscellaneous)2014Q2
Physics and Astronomy (miscellaneous)2015Q2
Physics and Astronomy (miscellaneous)2016Q1
Physics and Astronomy (miscellaneous)2017Q1
Physics and Astronomy (miscellaneous)2018Q1
Physics and Astronomy (miscellaneous)2019Q1

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)19991.447
Cites / Doc. (4 years)20001.584
Cites / Doc. (4 years)20011.639
Cites / Doc. (4 years)20021.833
Cites / Doc. (4 years)20031.809
Cites / Doc. (4 years)20041.866
Cites / Doc. (4 years)20052.241
Cites / Doc. (4 years)20062.432
Cites / Doc. (4 years)20072.350
Cites / Doc. (4 years)20082.726
Cites / Doc. (4 years)20092.727
Cites / Doc. (4 years)20103.490
Cites / Doc. (4 years)20113.787
Cites / Doc. (4 years)20123.677
Cites / Doc. (4 years)20134.200
Cites / Doc. (4 years)20143.674
Cites / Doc. (4 years)20153.491
Cites / Doc. (4 years)20163.257
Cites / Doc. (4 years)20173.363
Cites / Doc. (4 years)20183.632
Cites / Doc. (4 years)20193.738
Cites / Doc. (3 years)19991.447
Cites / Doc. (3 years)20001.567
Cites / Doc. (3 years)20011.679
Cites / Doc. (3 years)20021.850
Cites / Doc. (3 years)20031.700
Cites / Doc. (3 years)20041.697
Cites / Doc. (3 years)20052.300
Cites / Doc. (3 years)20062.505
Cites / Doc. (3 years)20072.441
Cites / Doc. (3 years)20082.336
Cites / Doc. (3 years)20092.919
Cites / Doc. (3 years)20103.533
Cites / Doc. (3 years)20113.317
Cites / Doc. (3 years)20123.855
Cites / Doc. (3 years)20134.062
Cites / Doc. (3 years)20143.384
Cites / Doc. (3 years)20153.021
Cites / Doc. (3 years)20163.198
Cites / Doc. (3 years)20173.287
Cites / Doc. (3 years)20183.402
Cites / Doc. (3 years)20193.719
Cites / Doc. (2 years)19991.344
Cites / Doc. (2 years)20001.566
Cites / Doc. (2 years)20011.559
Cites / Doc. (2 years)20021.809
Cites / Doc. (2 years)20031.425
Cites / Doc. (2 years)20041.694
Cites / Doc. (2 years)20052.409
Cites / Doc. (2 years)20062.600
Cites / Doc. (2 years)20071.746
Cites / Doc. (2 years)20082.460
Cites / Doc. (2 years)20092.763
Cites / Doc. (2 years)20103.023
Cites / Doc. (2 years)20113.430
Cites / Doc. (2 years)20123.671
Cites / Doc. (2 years)20133.712
Cites / Doc. (2 years)20142.549
Cites / Doc. (2 years)20152.786
Cites / Doc. (2 years)20163.095
Cites / Doc. (2 years)20172.969
Cites / Doc. (2 years)20183.243
Cites / Doc. (2 years)20193.317
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 Cites19992
Self Cites20004
Self Cites20013
Self Cites20026
Self Cites20039
Self Cites200410
Self Cites200530
Self Cites200645
Self Cites20072
Self Cites200826
Self Cites200938
Self Cites201077
Self Cites201146
Self Cites201214
Self Cites201366
Self Cites201428
Self Cites201532
Self Cites201629
Self Cites201725
Self Cites201826
Self Cites201946
Total Cites1999596
Total Cites2000716
Total Cites2001868
Total Cites2002962
Total Cites2003879
Total Cites2004881
Total Cites20051205
Total Cites20061350
Total Cites20071355
Total Cites20081350
Total Cites20091979
Total Cites20102664
Total Cites20112906
Total Cites20123520
Total Cites20133798
Total Cites20143252
Total Cites20152894
Total Cites20163140
Total Cites20173356
Total Cites20183453
Total Cites20193797
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 document19991.442
External Cites per document20001.558
External Cites per document20011.673
External Cites per document20021.838
External Cites per document20031.683
External Cites per document20041.678
External Cites per document20052.242
External Cites per document20062.421
External Cites per document20072.438
External Cites per document20082.291
External Cites per document20092.863
External Cites per document20103.431
External Cites per document20113.265
External Cites per document20123.840
External Cites per document20133.991
External Cites per document20143.355
External Cites per document20152.987
External Cites per document20163.168
External Cites per document20173.262
External Cites per document20183.376
External Cites per document20193.674
Cites per document19991.447
Cites per document20001.567
Cites per document20011.679
Cites per document20021.850
Cites per document20031.700
Cites per document20041.697
Cites per document20052.300
Cites per document20062.505
Cites per document20072.441
Cites per document20082.336
Cites per document20092.919
Cites per document20103.533
Cites per document20113.317
Cites per document20123.855
Cites per document20134.062
Cites per document20143.384
Cites per document20153.021
Cites per document20163.198
Cites per document20173.287
Cites per document20183.402
Cites per document20193.719
% 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 documents200212
Non-citable documents200318
Non-citable documents200423
Non-citable documents200520
Non-citable documents200617
Non-citable documents200722
Non-citable documents200818
Non-citable documents200927
Non-citable documents201028
Non-citable documents201137
Non-citable documents201242
Non-citable documents201345
Non-citable documents201446
Non-citable documents201544
Non-citable documents201633
Non-citable documents201732
Non-citable documents201834
Non-citable documents201944
Citable documents1999412
Citable documents2000457
Citable documents2001517
Citable documents2002520
Citable documents2003517
Citable documents2004519
Citable documents2005524
Citable documents2006539
Citable documents2007555
Citable documents2008578
Citable documents2009678
Citable documents2010754
Citable documents2011876
Citable documents2012913
Citable documents2013935
Citable documents2014961
Citable documents2015958
Citable documents2016982
Citable documents20171021
Citable documents20181015
Citable documents20191021
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 documents1999187
Uncited documents2000197
Uncited documents2001241
Uncited documents2002252
Uncited documents2003255
Uncited documents2004252
Uncited documents2005199
Uncited documents2006195
Uncited documents2007199
Uncited documents2008198
Uncited documents2009251
Uncited documents2010228
Uncited documents2011246
Uncited documents2012238
Uncited documents2013247
Uncited documents2014286
Uncited documents2015276
Uncited documents2016282
Uncited documents2017275
Uncited documents2018259
Uncited documents2019276
Cited documents1999225
Cited documents2000260
Cited documents2001276
Cited documents2002280
Cited documents2003280
Cited documents2004290
Cited documents2005345
Cited documents2006361
Cited documents2007378
Cited documents2008398
Cited documents2009454
Cited documents2010554
Cited documents2011667
Cited documents2012717
Cited documents2013733
Cited documents2014721
Cited documents2015726
Cited documents2016733
Cited documents2017778
Cited documents2018790
Cited documents2019789
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