A new update of the list of the World’s Top 2% scientists, an international ranking of the world’s most cited scientists in various disciplines, has been released by the Stanford University. Researchers from the Centre de Recerca Matemàtica appear both on the 2021 and the career-long lists.
Stanford University released an update this last November of the list that contains the top 2 per cent of the most-cited scientists in various disciplines. This ranking, considered one of the most prestigious worldwide, is based on the bibliometric information contained in the Scopus database to evaluate scientists for the impact of their citations.
This update in particular includes 6 CRM researchers among the list for the scientific production in 2021; ICREA and UPC-CRM researcher Xavier Cabré, ICREA and UB-CRM researcher Xavier Ros-Oton, ICREA and UAB-CRM researcher Xavier Tolsa, and CRM researchers Tim Myers, Sergey Tikhonov and Álvaro Corral.
Regarding the career-long list, which take into account the scientific production for the entire career of the scientists until 2021, 7 CRM researcher are included. Xavier Cabré, Xavier Tolsa, Álvaro Corral and Tim Myers repeat from the 2021 list, plus Pere Ara (UAB-CRM), Albert Atserias (UPC-CRM) and Josep Masdemont (UPC-CRM).
This classification makes it possible to gather the number of citations and the h index through a composite indicator (“c score”) that calculates the integrated way the scientific impact of each researcher, in terms of citations of their discoveries, the main authorship of the works and their significance for other researchers. It includes the top 2 % of the more than 8 million researchers considered to be active worldwide.
The number of citations of scientific publications is one of the indicators usually applied to assess research impact. This indicator affects other markers, such as the journal impact factor (JIF). Although rankings such as this are significant, it also represents a partial measurement of the significance of researchers and is not the only (nor the most relevant) measurement to evaluate the career of scientists.
World’s Top 2% Scientists
CRM Comm Team
Anna Drou | Pau Varela
CRMComm@crm.cat
Subscribe for more CRM News
Stay updated to our mailing list to get the lastest information about CRM activities.
Advanced Course on Free Boundary Problems Opens the Intensive Weeks of the IRP
From 26 to 30 October, around forty researchers attended the Advanced Course on Free Boundary Problems at the CRM, three seven-hour mini-courses given by Bozhidar Velichkov (Università di Pisa), Max Engelstein (University of Minnesota) and Zihui Zhao (Johns Hopkins University). The course was the first of the two intensive weeks of the Intensive Research Programme on Analysis of Free Boundary Problems, which runs until 4 December.
El CRM rep els estudiants de la prova de nivell de Bojos per les Matemàtiques 2027
Els aspirants a Bojos per les Matemàtiques 2027 van visitar el Centre de Recerca Matemàtica (CRM) dissabte 24 d’octubre, després de fer la prova de nivell a la Facultat de Ciències i Biociències de la UAB. En acabat, Tomás Sanz (UB-CRM) els va explicar què té a veure l’escalfament d’una barra de ferro amb els àudios de WhatsApp.
Eight CRM Researchers in the 2026 Stanford-Elsevier List of Highly Cited Scientists
The Centre de Recerca Matemàtica (CRM) has eight researchers in the 2026 update of the Stanford-Elsevier ranking of highly cited scientists, which John P. A. Ioannidis (Stanford University) and Jeroen Baas (Elsevier) compile from Scopus data. Xavier Cabré, Álvaro Corral, Tim Myers, Xavier Ros-Oton, Sergey Tikhonov and Xavier Tolsa appear both in the career-long ranking and in the one for 2025, and Diego Vidaurre and Simeon Ball in the 2025 ranking.
Fish schools and growing tissues: a workshop on how collective behaviour emerges
The Centre de Recerca Matemàtica (CRM) organised the Barcelona Workshop on Kinetic and Macroscopic Models in Biology with Friends II, held from 7 to 10 September at the Institut d’Estudis Catalans. More than thirty researchers discussed how order at the scale of tissues and animal groups arises from local interactions between individuals, in a programme that included talks by CRM researchers Daria Stepanova and Juan Arellano-Tintó. Two of the speakers, James Sharpe (EMBL Barcelona) and Chiara Villa (CNRS, Université Paris Cité), talked to the CRM about their research.
The CRM opens the academic year and unveils its Directors’ Gallery
A review of the year, the Communication Plan 2026–2030 and three research talks filled the morning of 19 October.The unveiling of the Directors’ Gallery.CRM CommPau VarelaCRMComm@crm.catGet the latest CRM news and activities in your inbox.Recent...
The CRM Mentoring Programme, as Told by One of Its Pairs
PhD student Joaquim Duran and mathematician Robert Cardona, one of the pairs in the CRM Mentoring ProgrammeJoaquim Duran (left) and Robert Cardona.CRM CommPau VarelaCRMComm@crm.catGet the latest CRM news and activities in your inbox.Recent...
When the reward comes within reach, the brain changes what it compares
As the tokens piled up, choices got faster and more accurate at the same time. The yardstick for judging each offer had moved.CRM CommPau VarelaCRMComm@crm.catGet the latest CRM news and activities in your inbox.Recent newsletters →Two subjects...
Almost every automaton can be reset with a short word
Guillaume Chapuy (Université Paris Cité, CNRS) and Guillem Perarnau (UPC, CRM) have shown that a random finite automaton with n states can, with high probability, be reset by a word of length of order √n log n. The result, published in ACM Transactions on Algorithms, pins the exponent at 1/2, the lower end of a decade of numerical estimates, and addresses the random version of the synchronization problem behind a conjecture Ján Černý posed in 1964 and which still remains open.
Exposició ‘Les matemàtiques de Gaudí’
CRM quod erat demonstrandum | 48
ADA: Decoding Brain Signals Misaligned in Time
The study addresses a key limitation of current brain decoding techniques: the difficulty of interpreting internal mental processes whose temporal dynamics vary from trial to trial.Decoding what is happening in a person’s mind from their brain activity is one of the...
Rare curves, many points: Christophe Ritzenthaler and Rachel Pries on their research and the work around it
Christophe Ritzenthaler (Université de Rennes) and Rachel Pries (Colorado State University) both work on curves over finite fields: he hunts curves with as many points as possible, she hunts curves that almost never occur. In conversation with the CRM during their...