Geography, ties and knowledge flows: evidence from citations in mathematics

Head, Keith, Li, Yao Amber and Minondo, Asier (2018) Geography, ties and knowledge flows: evidence from citations in mathematics. CEP Discussion Papers (CEPDP1554). London School of Economics and Political Science. Centre for Economic Performance, London, UK.

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Abstract

Using data on academic citations, career and educational histories of mathematicians, and disaggregated distance data for the world's top 1000 math departments, we study how geography and ties affect knowledge flows among scholars. The ties we consider are co-authorship, past colocation, advisor-mediated relationships, and alma mater relationships (holding a Ph.D. from the institution where another scholar is affiliated). Logit regressions using fixed effects that control for subject similarity, article quality, and temporal lags, show linkages are strongly associated with citation. Controlling for ties generally halves the negative impact of geographic barriers on citations. Ties matter more for less prominent and more recent papers and show no decline in importance in recent years. The impact of distance - controlling for ties - has fallen and is statistically insignificant after 2004.

Item Type:	Monograph (Discussion Paper)
Official URL:	http://cep.lse.ac.uk/
Additional Information:	© 2018 The Authors
Divisions:	Centre for Economic Performance
Subjects:	L Education > LB Theory and practice of education > LB2300 Higher Education Q Science > QA Mathematics
JEL classification:	F - International Economics > F1 - Trade O - Economic Development, Technological Change, and Growth > O3 - Technological Change; Research and Development R - Urban, Rural, and Regional Economics > R1 - General Regional Economics
Date Deposited:	27 Jun 2018 09:48
Last Modified:	13 Sep 2024 20:41
Funders:	Economic and Social Research Council
URI:	http://eprints.lse.ac.uk/id/eprint/88704

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