The prestige and status of research fields within mathematics
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While the “hierarchy of science” has been widely analysed, there is no corresponding study of the status of subfields within a given scientific field. We use bibliometric data to show that subfields of mathematics have a different “standing” within the mathematics community. Highly ranked departments tend to specialize in some subfields more than in others, and the same subfields are also over-represented in the most selective mathematics journals or among recipients of top prizes. Moreover this status of subfields evolves markedly over the period of observation (1984–2016), with some subfields gaining and others losing in standing. The status of subfields is related to different publishing habits, but some of those differences are opposite to those observed when considering the hierarchy of scientific fields. We examine possible explanations for the “status” of different subfields. Some natural explanations – availability of funding, importance of applications – do not appear to function, suggesting that factors internal to the discipline are at work. We propose a different type of explanation, based on a notion of “focus” of a subfield, that might or might not be specific to mathematics.
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