IDEAS home Printed from https://ideas.repec.org/p/hku/wpaper/201530.html
   My bibliography  Save this paper

Geography, Ties, and Knowledge Flows: Evidence from Citations in Mathematics

Author

Listed:
  • Yao Amber Li

    (Department of Economics, Hong Kong University of Science and Technology
    Institute for Emerging Market Studies, Hong Kong University of Science and Technology)

  • Keith Head

    (Sander School of Business, University of British Columbia)

  • Asier Minondo

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 coauthorship, 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; the distance effect became insignificant after 2004.

Suggested Citation

  • Yao Amber Li & Keith Head & Asier Minondo, 2015. "Geography, Ties, and Knowledge Flows: Evidence from Citations in Mathematics," HKUST IEMS Working Paper Series 2015-30, HKUST Institute for Emerging Market Studies, revised Sep 2015.
    • Handle: RePEc:hku:wpaper:201530
    as

    Download full text from publisher

    File URL: http://iems.ust.hk/assets/publications/working-papers-2015/iemswp2015-30.pdf
    File Function: First version, 2015
    Download Restriction: no
    ---><---

    Other versions of this item:

    References listed on IDEAS

    as
    1. Keith Head & Thierry Mayer, 2013. "What separates us? Sources of resistance to globalization," Canadian Journal of Economics, Canadian Economics Association, vol. 46(4), pages 1196-1231, November.
    2. Juan Alcácer & Michelle Gittelman, 2006. "Patent Citations as a Measure of Knowledge Flows: The Influence of Examiner Citations," The Review of Economics and Statistics, MIT Press, vol. 88(4), pages 774-779, November.
    3. Kim, E. Han & Morse, Adair & Zingales, Luigi, 2009. "Are elite universities losing their competitive edge?," Journal of Financial Economics, Elsevier, vol. 93(3), pages 353-381, September.
    4. William R. Kerr & Scott Duke Kominers, 2015. "Agglomerative Forces and Cluster Shapes," The Review of Economics and Statistics, MIT Press, vol. 97(4), pages 877-899, October.
    5. Jasjit Singh & Matt Marx, 2013. "Geographic Constraints on Knowledge Spillovers: Political Borders vs. Spatial Proximity," Management Science, INFORMS, vol. 59(9), pages 2056-2078, September.
    6. Feyrer, James, 2021. "Distance, trade, and income — The 1967 to 1975 closing of the Suez canal as a natural experiment," Journal of Development Economics, Elsevier, vol. 153(C).
    7. George J. Borjas & Kirk B. Doran, 2021. "The Collapse Of The Soviet Union And The Productivity Of American Mathematicians," World Scientific Book Chapters, in: Foundational Essays in Immigration Economics, chapter 11, pages 313-373, World Scientific Publishing Co. Pte. Ltd..
    8. Waldinger, Fabian, 2010. "Quality matters: the expulsion of professors and Ph.D. student outcomes in Nazi Germany," LSE Research Online Documents on Economics 28737, London School of Economics and Political Science, LSE Library.
    9. Yasusada Murata & Ryo Nakajima & Ryosuke Okamoto & Ryuichi Tamura, 2014. "Localized Knowledge Spillovers and Patent Citations: A Distance-Based Approach," The Review of Economics and Statistics, MIT Press, vol. 96(5), pages 967-985, December.
    10. Fabian Waldinger, 2010. "Quality Matters: The Expulsion of Professors and the Consequences for PhD Student Outcomes in Nazi Germany," Journal of Political Economy, University of Chicago Press, vol. 118(4), pages 787-831, August.
    11. Gaspar, Jess & Glaeser, Edward L., 1998. "Information Technology and the Future of Cities," Journal of Urban Economics, Elsevier, vol. 43(1), pages 136-156, January.
    12. Adam B. Jaffe & Manuel Trajtenberg & Rebecca Henderson, 1993. "Geographic Localization of Knowledge Spillovers as Evidenced by Patent Citations," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 108(3), pages 577-598.
    13. Rachel Griffith & Sokbae Lee & John Van Reenen, 2011. "Is distance dying at last? Falling home bias in fixed‐effects models of patent citations," Quantitative Economics, Econometric Society, vol. 2(2), pages 211-249, July.
    14. Jorge De La Roca & Diego Puga, 2017. "Learning by Working in Big Cities," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 84(1), pages 106-142.
    15. Wolfgang Keller, 2002. "Geographic Localization of International Technology Diffusion," American Economic Review, American Economic Association, vol. 92(1), pages 120-142, March.
    16. Wolfgang Keller & Stephen Ross Yeaple, 2013. "The Gravity of Knowledge," American Economic Review, American Economic Association, vol. 103(4), pages 1414-1444, June.
    17. Benjamin M. Althouse & Jevin D. West & Carl T. Bergstrom & Theodore Bergstrom, 2009. "Differences in impact factor across fields and over time," Journal of the American Society for Information Science and Technology, Association for Information Science & Technology, vol. 60(1), pages 27-34, January.
    18. Treb Allen, 2014. "Information Frictions in Trade," Econometrica, Econometric Society, vol. 82, pages 2041-2083, November.
    19. Sharon Belenzon & Mark Schankerman, 2013. "Spreading the Word: Geography, Policy, and Knowledge Spillovers," The Review of Economics and Statistics, MIT Press, vol. 95(3), pages 884-903, July.
    20. Ajay Agrawal & John McHale & Alexander Oettl, 2014. "Collaboration, Stars, and the Changing Organization of Science: Evidence from Evolutionary Biology," NBER Chapters, in: The Changing Frontier: Rethinking Science and Innovation Policy, pages 75-102, National Bureau of Economic Research, Inc.
    21. Keith Head & Thierry Mayer, 2013. "Innis Lecture: What separates us? Sources of resistance to globalization," Canadian Journal of Economics/Revue canadienne d'économique, John Wiley & Sons, vol. 46(4), pages 1196-1231, November.
    22. Rebecca Henderson & Adam Jaffe & Manuel Trajtenberg, 2005. "Patent Citations and the Geography of Knowledge Spillovers: A Reassessment: Comment," American Economic Review, American Economic Association, vol. 95(1), pages 461-464, March.
    23. Jasjit Singh, 2005. "Collaborative Networks as Determinants of Knowledge Diffusion Patterns," Management Science, INFORMS, vol. 51(5), pages 756-770, May.
    24. William R. Kerr & Martin Mandorff, 2023. "Social Networks, Ethnicity, and Entrepreneurship," Journal of Human Resources, University of Wisconsin Press, vol. 58(1), pages 183-220.
    25. Wolfgang Keller, 2004. "International Technology Diffusion," Journal of Economic Literature, American Economic Association, vol. 42(3), pages 752-782, September.
    26. Li, Yao Amber, 2014. "Borders and distance in knowledge spillovers: Dying over time or dying with age?—Evidence from patent citations," European Economic Review, Elsevier, vol. 71(C), pages 152-172.
    27. Combes, Pierre-Philippe & Lafourcade, Miren & Mayer, Thierry, 2005. "The trade-creating effects of business and social networks: evidence from France," Journal of International Economics, Elsevier, vol. 66(1), pages 1-29, May.
    28. repec:hal:spmain:info:hdl:2441/443fbihfmj8h58a4ceedn30ogb is not listed on IDEAS
    29. Dmitriev, Mikhail & Comin, Diego & Rossi-Hansberg, Esteban, 2012. "The Spatial Diffusion of Technology," CEPR Discussion Papers 9208, C.E.P.R. Discussion Papers.
    30. Peter Thompson, 2006. "Patent Citations and the Geography of Knowledge Spillovers: Evidence from Inventor- and Examiner-added Citations," The Review of Economics and Statistics, MIT Press, vol. 88(2), pages 383-388, May.
    31. Daniel S. Hamermesh, 2013. "Six Decades of Top Economics Publishing: Who and How?," Journal of Economic Literature, American Economic Association, vol. 51(1), pages 162-172, March.
    32. Li Tang & John P. Walsh, 2010. "Bibliometric fingerprints: name disambiguation based on approximate structure equivalence of cognitive maps," Scientometrics, Springer;Akadémiai Kiadó, vol. 84(3), pages 763-784, September.
    33. Gould, David M, 1994. "Immigrant Links to the Home Country: Empirical Implications for U.S. Bilateral Trade Flows," The Review of Economics and Statistics, MIT Press, vol. 76(2), pages 302-316, May.
    34. Giovanni Peri, 2005. "Determinants of Knowledge Flows and Their Effect on Innovation," The Review of Economics and Statistics, MIT Press, vol. 87(2), pages 308-322, May.
    35. Combes, Pierre-Philippe & Lafourcade, Miren & Mayer, Thierry, 2005. "The trade-creating effects of business and social networks: evidence from France," Journal of International Economics, Elsevier, vol. 66(1), pages 1-29, May.
    36. Alessandro Iaria & Carlo Schwarz & Fabian Waldinger, 2018. "Frontier Knowledge and Scientific Production: Evidence from the Collapse of International Science," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 133(2), pages 927-991.
    37. Arrow, Kenneth J, 1969. "Classificatory Notes on the Production and Transmission of Technological Knowledge," American Economic Review, American Economic Association, vol. 59(2), pages 29-35, May.
    38. Mikko Packalen & Jay Bhattacharya, 2015. "Cities and Ideas," NBER Working Papers 20921, National Bureau of Economic Research, Inc.
    39. Marc J. Melitz, 2003. "The Impact of Trade on Intra-Industry Reallocations and Aggregate Industry Productivity," Econometrica, Econometric Society, vol. 71(6), pages 1695-1725, November.
    40. William R. Kerr, 2008. "Ethnic Scientific Communities and International Technology Diffusion," The Review of Economics and Statistics, MIT Press, vol. 90(3), pages 518-537, August.
    41. Glenn Ellison & Edward L. Glaeser & William R. Kerr, 2010. "What Causes Industry Agglomeration? Evidence from Coagglomeration Patterns," American Economic Review, American Economic Association, vol. 100(3), pages 1195-1213, June.
    42. Keller, Wolfgang, 2001. "The Geography and Channels of Diffusion at the World's Technology Frontier," Discussion Paper Series 26140, Hamburg Institute of International Economics.
    43. Gopinath, G. & Helpman, . & Rogoff, K. (ed.), 2014. "Handbook of International Economics," Handbook of International Economics, Elsevier, edition 1, volume 4, number 4.
    44. Sharon Belenzon & Mark Schankerman, 2010. "Spreading the Word: Geography, Policy and Knowledge Spillovers," CEP Discussion Papers dp1005, Centre for Economic Performance, LSE.
    45. Agrawal, Ajay & Kapur, Devesh & McHale, John, 2008. "How do spatial and social proximity influence knowledge flows? Evidence from patent data," Journal of Urban Economics, Elsevier, vol. 64(2), pages 258-269, September.
    46. Peter Thompson & Melanie Fox-Kean, 2005. "Patent Citations and the Geography of Knowledge Spillovers: A Reassessment: Reply," American Economic Review, American Economic Association, vol. 95(1), pages 465-466, March.
    47. Stefano Breschi & Francesco Lissoni, 2009. "Mobility of skilled workers and co-invention networks: an anatomy of localized knowledge flows," Journal of Economic Geography, Oxford University Press, vol. 9(4), pages 439-468, July.
    48. Peter Thompson & Melanie Fox-Kean, 2005. "Patent Citations and the Geography of Knowledge Spillovers: A Reassessment," American Economic Review, American Economic Association, vol. 95(1), pages 450-460, March.
    49. Hopenhayn, Hugo A, 1992. "Entry, Exit, and Firm Dynamics in Long Run Equilibrium," Econometrica, Econometric Society, vol. 60(5), pages 1127-1150, September.
    50. Manski, Charles F & Lerman, Steven R, 1977. "The Estimation of Choice Probabilities from Choice Based Samples," Econometrica, Econometric Society, vol. 45(8), pages 1977-1988, November.
    51. James E. Rauch, 2001. "Business and Social Networks in International Trade," Journal of Economic Literature, American Economic Association, vol. 39(4), pages 1177-1203, December.
    52. Lissoni, Francesco, 2001. "Knowledge codification and the geography of innovation: the case of Brescia mechanical cluster," Research Policy, Elsevier, vol. 30(9), pages 1479-1500, December.
    53. James E. Rauch & Vitor Trindade, 2002. "Ethnic Chinese Networks In International Trade," The Review of Economics and Statistics, MIT Press, vol. 84(1), pages 116-130, February.
    Full references (including those not matched with items on IDEAS)

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Pierre Cotterlaz, 2021. "Three essays on spatial frictions [Trois essais sur les frictions spatiales]," SciencePo Working papers Main tel-03436173, HAL.
    2. Pierre Cotterlaz, 2021. "Three essays on spatial frictions [Trois essais sur les frictions spatiales]," SciencePo Working papers tel-03436173, HAL.
    3. Jasjit Singh & Matt Marx, 2013. "Geographic Constraints on Knowledge Spillovers: Political Borders vs. Spatial Proximity," Management Science, INFORMS, vol. 59(9), pages 2056-2078, September.
    4. Long, Cheryl Xiaoning & Yi, Wei, 2024. "Information effects of high-speed rail: Evidence from patent citations in China," China Economic Review, Elsevier, vol. 84(C).
    5. Carlino, Gerald & Kerr, William R., 2015. "Agglomeration and Innovation," Handbook of Regional and Urban Economics, in: Gilles Duranton & J. V. Henderson & William C. Strange (ed.), Handbook of Regional and Urban Economics, edition 1, volume 5, chapter 0, pages 349-404, Elsevier.
    6. Hyuk-Soo Kwon & Jihong Lee & Sokbae Lee & Ryungha Oh, 2022. "Knowledge spillovers and patent citations: trends in geographic localization, 1976–2015," Economics of Innovation and New Technology, Taylor & Francis Journals, vol. 31(3), pages 123-147, April.
    7. Stefano Breschi & Francesco Lissoni & Ernest Miguelez, 2017. "Foreign-origin inventors in the USA: testing for diaspora and brain gain effects," Journal of Economic Geography, Oxford University Press, vol. 17(5), pages 1009-1038.
    8. Hillel Rapoport, 2016. "Migration and globalization: what’s in it for developing countries?," International Journal of Manpower, Emerald Group Publishing Limited, vol. 37(7), pages 1209-1226, October.
    9. Georg von Graevenitz & Stuart J. H. Graham & Amanda Myers, 2019. "Distance (Still) Hampers Diffusion of Innovations," Working Paper series, University of East Anglia, Centre for Competition Policy (CCP) 2019-05, Centre for Competition Policy, University of East Anglia, Norwich, UK..
    10. Carlino, Gerald & Kerr, William R., 2015. "Agglomeration and Innovation," Handbook of Regional and Urban Economics, in: Gilles Duranton & J. V. Henderson & William C. Strange (ed.), Handbook of Regional and Urban Economics, edition 1, volume 5, chapter 0, pages 349-404, Elsevier.
    11. repec:zbw:bofrdp:2015_027 is not listed on IDEAS
    12. Li, Yao Amber, 2014. "Borders and distance in knowledge spillovers: Dying over time or dying with age?—Evidence from patent citations," European Economic Review, Elsevier, vol. 71(C), pages 152-172.
    13. repec:bof:bofrdp:urn:nbn:fi:bof-201512111472 is not listed on IDEAS
    14. Kristy Buzard & Gerald A. Carlino & Jake Carr & Robert M. Hunt & Tony E. Smith, 2015. "Localized Knowledge Spillovers: Evidence from the Agglomeration of American R&D Labs and Patent Data," Working Papers 15-3, Federal Reserve Bank of Philadelphia.
    15. repec:zbw:bofrdp:urn:nbn:fi:bof-201512111472 is not listed on IDEAS
    16. Georg von Graevenitz & Stuart J. H. Graham & Amanda F. Myers, 2022. "Distance (still) hampers diffusion of innovations," Regional Studies, Taylor & Francis Journals, vol. 56(2), pages 227-241, February.
    17. Diemer, Andreas & Regan, Tanner, 2022. "No inventor is an island: Social connectedness and the geography of knowledge flows in the US," Research Policy, Elsevier, vol. 51(2).
    18. Robin Kaiji Gong, 2019. "The Local Technology Spillovers of Multinational Firms," HKUST CEP Working Papers Series 201902, HKUST Center for Economic Policy.
    19. William R. Kerr & Frederic Robert-Nicoud, 2020. "Tech Clusters," Journal of Economic Perspectives, American Economic Association, vol. 34(3), pages 50-76, Summer.
    20. Elvira Cerver-Romero & João J. Ferreira & Cristina Fernandes, 2020. "A scientometric analysis of knowledge spillover research," The Journal of Technology Transfer, Springer, vol. 45(3), pages 780-805, June.
    21. Keller, Wolfgang, 2010. "International Trade, Foreign Direct Investment, and Technology Spillovers," Handbook of the Economics of Innovation, in: Bronwyn H. Hall & Nathan Rosenberg (ed.), Handbook of the Economics of Innovation, edition 1, volume 2, chapter 0, pages 793-829, Elsevier.
    22. Wei Cheng & Bruce A. Weinberg, 2021. "Marginalized and Overlooked? Minoritized Groups and the Adoption of New Scientific Ideas," NBER Working Papers 29179, National Bureau of Economic Research, Inc.
    23. Yasusada Murata & Ryo Nakajima & Ryosuke Okamoto & Ryuichi Tamura, 2013. "Localized knowledge spillovers and patent citations: A distance-based approach (revised version)," GRIPS Discussion Papers 12-18, National Graduate Institute for Policy Studies.

    More about this item

    Keywords

    network; distance; border; geography; knowledge flows; academic citations; genealogy; matching;
    All these keywords.

    JEL classification:

    • O3 - Economic Development, Innovation, Technological Change, and Growth - - Innovation; Research and Development; Technological Change; Intellectual Property Rights
    • F1 - International Economics - - Trade
    • R1 - Urban, Rural, Regional, Real Estate, and Transportation Economics - - General Regional Economics

    NEP fields

    This paper has been announced in the following NEP Reports:

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:hku:wpaper:201530. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Carla Chan (email available below). General contact details of provider: https://edirc.repec.org/data/ieusthk.html .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.