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1999 Fiscal Year Final Research Report Summary

On the Efficiency and Stbility of Networks Formation

Research Project

Project/Area Number 10630013
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 経済理論
Research InstitutionKeio University

Principal Investigator

KAWAMATA Kunio  Keio University, Economics, Professor, 経済学部, 教授 (30051569)

Project Period (FY) 1998 – 1999
Keywordscontribution of a Firm / free Entry / excessive entry / auction / Supermodularity / network / complete graph / coalition formation
Research Abstract

In the article ''On the Efficiency and Stability of Networks" we examined the relationships between the incentive for the links formation and the efficiency of the resulting networks. Although it is desirable that networks are both efficient and stable, these two objectives are often incompatible. Imposing reasonable requirements we give conditions under which this conflict is avoided.
In the article "Optimal Entry and Marginal Contribution of Players" we defined the concept of the "marginal contribution of a firm" as the difference between the maximum welfare with the firm and that without it. It is established that
(I) in the competitive market, the contribution of a firm equals the profit of the firm,
(ii) in the monopolistic competition market, the contribution of the firm less than the profit, and that
(iii) entry is excessive in such a market.

  • Research Products

    (8 results)

All Other

All Publications (8 results)

  • [Publications] 川又邦雄、山方竜二: "企業の垂直分離・統合とその規制"三田学会雑誌. 91巻3号. 44-69 (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Kunio Kawamata and Yumiko Baba: "Auction Theory and Its Practices"Government Auditing Review. Vol.5. 35-44 (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Kunio Kawamata: "On the Efficiency and Stability of Networks"in R. Sato, R.V. Ramachandran and K. Mino(eds.) Global Competition and Integration. 83-97 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Kunio Kawamata: "Optimal Entry and Marginal Contribution of a Player"in A. Alkan, C. D. Aliprantisand N.C. Yannelis(eds.) Current Trends in Economics. 233-254 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Kunio Kawamata and Yumiko Baba: "Auction Theory and Its Practices"Government Auditing Review. Vol.5. 35-44 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Kunio Kawamata: "On the Efficiency and Stability of Networks in R. Sato, R.V. Ramachandran and K. Mino (eds)"Global Competition and Integration. 83-98 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Kunio Kawamata: "Optimal Entry and Marginal Contribution of a Player in A. Alkan, C.D. Aliprantis and N.C. Yannelis (eds)"Current Trends in Economics. 233-254 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Kunio Kawamata and Ryuji Yamagata: "On the Regulation of Vertical Separation Integration"Mita Journal of Economics. Vol.91-3(in Japanese). 44-69 (1998)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2001-10-23  

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