Takumi Kongo

Faculty of Economics, Fukuoka University

8-19-1 Nanakuma, Jonan-ku, Fukuoka 814-0180, JAPAN

email: kongo@adm.fukuoka-u.ac.jp

• 1. Equal support from others for unproductive players: efficient and linear values that satisfy the equal treatment and weak null player out properties for cooperative games, Annals of Operations Research 2024, Vol.338, pp.973-989, doi:10.1007/s10479-024-06057-7

  2. Redistribution to the less productive: Parallel characterizations of the egalitarian Shapley and consensus values, (with Koji Yokote and Yukihiko Funaki), Theory and Decision 2021, Vol.91, pp.81-98, doi:10.1007/s11238-020-09781-1 

     • See also publisher's correction to this article. Theory and Decision 2021, Vol.91, pp.99-99, doi:10.1007/s11238-020-09793-x

  3. Similarities in axiomatizations: equal surplus division value and first-price auctions, Review of Economic Design 2020, Vol.24, pp.199-213, doi:10.1007/s10058-020-00233-4

  4. Players' nullification and the weighted (surplus) division values, Economics Letters 2019, Vol.183, 108539, doi:10.1016/j.econlet.2019.108539

  5. Relationally equal treatment of equals and affine combinations of values for TU games (with Koji Yokote and Yukihiko Funaki), Social Choice and Welfare 2019, Vol.53, pp.197-212, doi:10.1007/s00355-019-01180-y

     • See also a correction to this article. Social Choice and Welfare 2019, Vol.53, pp.555-555, doi:10.1007/s00355-019-01205-6 

     • This paper was formerly entitled ``Relationally equal treatment of equals characterizes combinations of values for cooperative games'' and ``Balanced contributions and null player out for the Shapley, equal surplus division, and equal division values.''

  6. Balanced contributions based on indirect claims and the Shapley value, Economics Letters 2018, Vol.167, pp.48-50, doi:10.1016/j.econlet.2018.03.008

  7. Effects of players’ nullification and equal (surplus) division values, International Game Theory Review 2018, Vol.20, 14 pages, doi:10.1142/S0219198917500293 

     • This paper was formerly entitled ``Marginalism and egalitarianism under the equal effect of players’ nullification .''

  8. The balanced contributions property for equal contributors (with Koji Yokote and Yukihiko Funaki), Games and Economic Behavior 2018, Vol.108, pp.113-124, doi:10.1016/j.geb.2017.08.007

  9. The balanced contributions property for symmetric players (with Koji Yokote), Operations Research Letters 2017, Vol.45, pp.227-231, doi:10.1016/j.orl.2017.03.005

  10. Further axiomatizations of Egghe's g-index (with Tsuyoshi Adachi), Journal of Informetrics 2015, Vol.9, pp.839-844, doi:10.1016/j.joi.2015.07.001

  11. An alternative axiomatization of the Hirsch index, Journal of Informetrics 2014, Vol.8, pp.252-258, doi:10.1016/j.joi.2013.12.005 

      • This paper was formerly entitled ``Another axiomatization of the Hirsch index.''

  12. Properties based on relative contributions for cooperative games with transferable utilities (with Yoshio Kamijo), Theory and Decision 2015, Vol.78, pp.77-87, doi:10.1007/s11238-013-9402-3

  13. On non-bossy matching rules in two-sided matching problems, International Journal of Economic Theory 2013, Vol.9, pp.303-311, doi:10.1111/j.1742-7363.2013.12021.x

  14. First-Price auctions on general preference domains: axiomatic characterizations (with Tsuyoshi Adachi), Economic Theory Bulletin 2013, Vol.1, pp.93-103, doi:10.1007/s40505-013-0001-9

  15. An Incompatibility between recursive unanimity and strategy-proofness in two-sided matching problems, Social Choice and Welfare 2013, Vol.40, pp.461-478, doi:10.1007/s00355-011-0615-5

      • There are some typos in Definition 2 in the published version. Please refer to this PDF

      • This paper was formerly entitled ``Recursive unanimity, strategy-proofness, and non-bossiness in two-sided matching problems.''

  16. Whose deletion does not affect your payoff? The difference between the Shapley value, the egalitarian value, the solidarity value, and the Banzhaf value (with Yoshio Kamijo), European Journal of Operational Research 2012, Vol.216, pp.638-646, doi:10.1016/j.ejor.2011.08.011

  17. Value of games with two-layered hypergraphs, Mathematical Social Sciences 2011, Vol.62, pp.114-119, doi:10.1016/j.mathsocsci.2011.06.006

      • This paper was formerly entitled ``Cooperative games with two-level networks.''

  18. Non-cooperative and axiomatic characterizations of the average lexicographic value (with Yukihiko Funaki, Rodica Branzei, and Stef Tijs), International Game Theory Review 2010, Vol.12, pp.417-435, doi:10.1142/S0219198910002751

  19. Difference between the position value and the Myerson value is due to the existence of coalition structures, International Journal of Game Theory 2010, Vol.39, pp.669-675, doi:10.1007/s00182-009-0211-4 

  20. Axiomatization of the Shapley value using the balanced cycle contributions property (with Yoshio Kamijo), International Journal of Game Theory 2010, Vol.39, pp.563-571, doi:10.1007/s00182-009-0187-0

      • This paper was formerly entitled ``Axiomatizations of the values of TU games using the balanced cycle contributions property.''

• Articles in Proceedings

  1. Marginal games and characterizations of the Shapley value in TU games (with Yukihiko Funaki), In: Li DF., Yang XG., Uetz M., Xu GJ. (eds) Game Theory and Applications. China-Dutch GTA 2016, China GTA 2016. Communications in Computer and Information Science, vol 758, pp 165-173, Springer, Singapore. doi:10.1007/978-981-10-6753-2_12

• 1. Equality, proportionality, and monotonicity in depreciation problems, Equality, proportionality, and monotonicity in depreciation problems, ES World Congress 2025, Seoul, Korea, August 18-22, 2025

  2. Equality, proportionality, and monotonicity in amortization or depreciation problems, Summer Workshop on Economic Theory 2025, Otaru, August 9, 2025 (presented in Japanese)

  3. A family of values that satisfies efficiency and two fairness requirements assuming three players, European Meeting on Game Theory (SING20), Maastricht University, the Netherlands, June 16-18, 2025

  4. Equality, proportionality, and monotonicity in depreciation problems, Seminar at Center for Advanced Economic Study, Fukuoka University, June 13, 2025 (presented in Japanese) 

  5. Equality, proportionality, and monotonicity in depreciation problems, Waseda Game Theory and Experimental Economics Workshop, Tokyo, February 1, 2025 (presented in Japanese)

  6. A family of values that satisfies efficiency and two fairness requirements assuming three players, East Asia Game Theory Conference (EAGT2024), Jeju, August 26-28, 2024 

  7. A family of values that satisfies efficiency and two fairness requirements assuming three players, Seminar at Center for Advanced Economic Study, Fukuoka University, July 5, 2024 (presented in Japanese) 

  8. A family of values that satisfies efficiency and two fairness requirements assuming three players, Waseda Game Theory and Experimental Economics Workshop, Tokyo, January 26, 2024

  9. Efficient and fair solutions in cooperative games, 14th meeting on Japan Association of Political Economy (in-person), Tokyo, March 3, 2023 (presented in Japanese) 

  10. Efficient and fair solutions in cooperative games, International Conference on Distributive Justice and Fair Allocation (in-person), Busan, Korea, February 25, 2023  

  11. Equal support from others for unproductive players: efficient and linear values that satisfy the equal treatment and weak null player out properties for cooperative games, The Summer Workshop on Game Theory and Experimental Economics 2022, Keio University, Japan, September 11-12, 2022 

  12. Efficient and linear values that satisfy the equal treatment and weak null player out properties for cooperative games, 2022 Asian Meeting of the Econometric Society in East and South-East Asia, Keio University and University of Tokyo, Japan, August 8-10, 2022 

  13. Efficient and linear values that satisfy the equal treatment and weak null player out properties for cooperative games, The European Meeting on Game Theory (SING17), the University of Padova, Italy (Virtual), July 11-13, 2022 

  14. Efficient and fair solutions in cooperative games, Microeconomics Workshop, Institute for Economic Studies, Keio University, Japan (Online), June 10, 2022 

  15. Efficient and fair solutions in cooperative games, The European Meeting on Game Theory (SING16), Universidad de Granada, Spain (Virtual), June 30-July 2, 2021 

  16. Similarities in axiomatizations: equal surplus division value and first-price auctions, The 20th Annual SAET Conference, Seoul, Korea (Virtual), June 13-17, 2021

  17. A balanced contributions approach to a partially privatized firm in a mixed duopoly, Kyushu Branch, Operations Research Society of Japan, Fukuoka University, December 14, 2019 (presented in Japanese)

  18. A balanced contributions approach to a partially privatized firm in a mixed duopoly, The Lisbon Meetings in Game Theory and Applications #11, Instituto Superior de Economia e Gestao da Universidade de Lisboa, Lisbon, Portugal, Nobember 7-9, 2019

  19. A balanced contributions approach to a partially privatized firm in a mixed duopoly, Seminar at Center for Advanced Economic Study, Fukuoka University, September 13, 2019 (presented in Japanese)

  20. A balanced contributions approach to a partially privatized firm in a mixed duopoly, Summer Workshop on Game Theory 2019 Sendai, Sendai International Center, August 27, 2019

  21. Differential symmetry, symmetry, and differential marginality for TU games, Seminar at Center for Advanced Economic Study, Fukuoka University, November 2, 2018 (presented in Japanese)

  22. Differential symmetry, symmetry, and differential marginality for TU games, UECE Lisbon Meetings in Game Theory and Applications, Instituto Superior de Economia e Gestao da Universidade de Lisboa, Lisbon, Portugal, October 25-27, 2018

  23. Relationally equal treatment of equals characterizes combinations of values for cooperative games, Summer Workshop 2018 Fukuoka, Fukuoka University, August 28-30, 2018

  24. Balanced contributions based on indirect claims and the Shapley value, Waseda Game Theory and Experimental Economics Workshop, Waseda University, January 20, 2018 (presented in Japanese)

  25. Balanced contributions and null player out for the Shapley, equal surplus division, and equal division values, UECE Lisbon Meetings in Game Theory and Applications, Instituto Superior de Economia e Gestao da Universidade de Lisboa, Lisbon, Portugal, November 9-11, 2017

  26. Balanced contributions and null player out for the Shapley, equal surplus division, and equal division values, Seminar at Center for Advanced Economic Study, Fukuoka University, October 30, 2017 (presented in Japanese)

  27. Axiomatic approach to indexes for evaluation on Resercher's perfomances, Kyushu Branch, Operations Research Society of Japan, Fukuoka University, July 15, 2017 (presented in Japanese)

  28. An impossibility for strategy-proof and majority matching rules, Waseda Game Theory and Experimental Economics Workshop, Waseda University, January 28, 2017 (presented in both English and Japanese)

  29. The balanced contributions property for equal contributors, Seminar at Center for Advanced Economic Study, Fukuoka University, December 9, 2016 (presented in Japanese)

  30. The balanced contributions property for equal contributors, UECE Lisbon Meetings in Game Theory and Applications 2016, Technical University of Lisbon, Lisbon, Portugal, November 3-5, 2016

  31. Marginalism and egalitarianism under the equal effect of players’ nullification on the others, European Meeting on Game Theory (SING 12), University of Southern Denmark, July 11-13, 2016

  32. Marginalism and egalitarianism under the equal effect of players’ nullification on the others, Seminar at Center for Advanced Economic Study, Fukuoka University, July 1, 2016 (presented in Japanese)

  33. Further axiomatizations of Egghe’s g-index, East Asian Game Theory Conference 2015, Waseda University, Tokyo, Japan, August 24-26, 2015

  34. Further axiomatizations of Egghe’s g-index, Joint Conference on Logic, Game Theory, and Social Choice 8 and the 8th Pan-Pacific Conference on Game Theory, Academia Sinica, Taipei, Taiwan, May 19-21, 2015

  35. Further axiomatizations of Egghe’s g-index, Seminar at Center for Advanced Economic Study, Fukuoka University, May 1, 2015 (presented in Japanese)

  36. Axiomatization of the away goals rule in football, Seminar at Kyoto University, January 29, 2015 (presented in Japanese)

  37. An alternative axiomatization of the Hirsch index, The Second International Workshop on Market Design Technologies for Sustainable Development, Keio University, Tokyo, Japan, August 17-18, 2014 (invited)

  38. Axiomatization of the away goals rule, Seminar at Sophia University Faculty of Economics, February 19, 2014 (presented in Japanese)

  39. Another axiomatization of the Hirsch index, UECE Lisbon Meetings Game Theory and Applications, Technical University of Lisbon, Lisbon, Portugal, November 7-9, 2013, 

  40. Another axiomatization of the Hirsch index, Seminar at Center for Advanced Economic Study, Fukuoka University, Octomber 11, 2013 (presented in Japanese)

  41. Another axiomatization of the Hirsch index, Semi-Annual Meeting on Japanese Economic Association, Kanagawa University, Kanagawa, Japan, September 15-16, 2013 (presented in Japanese)

  42. On nonbossy matching rules in two-sided matching problems, Spring Meeting on Japan Association for Applied Economics, Fukuoka, Japan, June 9-10, 2012 (presented in Japanese)

  43. An incompatibility between recursive unanimity and strategy-proofness in two-sided matching problems, 2011 SNU-Waseda Graduate Economics Workshop, Seoul, Korea, November 3-4, 2011

  44. Recursive unanimity, strategy-proofness, and non-bossiness in two-sided matching problems, The 7th Spain-Italy-Netherlands Meeting on Game Theory, Paris, France, July 18-20, 2011

  45. Whose deletion does not affect your payoff? the difference between the Shapley value, the egalitarian value, the solidarity value, and the Banzhaf value, Logic, Game Theory, and Social Choice 7, Bucharest, Romania, July 6-9, 2011

  46. Recursive unanimity, strategy-proofness, and non-bossiness in two-sided matching problems, The Inaugural Conference of the Chinese Game Theory and Experimental Economics, Beijing, China, August 24-26, 2010

  47. A Non-cooperative and an axiomatic characterization of the AL-value, The 6th Spain, Italy, Netherlands Meeting on Game Theory, Universita degli Studi di Palermo, Palermo, Italy, July 7-9, 2010

  48. Possibility of individually rational, efficient, and non-bossy matching rules, GLOPEII International Young Scholar's Conference, Waseda University, Tokyo, Japan, December 5-6, 2009

  49. Axiomatizations of the values of TU games using the balanced cycle contributions property, Logic, Game Theory, and Social Choice 6, University of Tsukuba, Tsukuba, Japan, August 26-29, 2009

  50. Allocation rules and bargaining in networks with asymmetries, Waseda Game Theory Workshop, Waseda University, Tokyo, Japan August 23-25, 2009

  51. Possibility of individually rational, efficient, and non-bossy matching rules, The Sixth Asian General Equilibrium Theory Workshop, Waseda University, Tokyo, Japan, July 31-August 1, 2009

  52. Population normalized balanced contributions property and the per-capita Shapley value, 23rd European Conference on Operations Research, Bonn, Germany, July 5-8, 2009

  53. Difference between the position value and the Myerson value is due to the existence of coalition structures, The 5th Spain, Italy, Netherlands Meeting on Game Theory, VU University, Amsterdam, the Netherlands, July 1-3, 2009

  54. Axiomatizations of the values of TU games using the balanced cycle contributions property, Semi-Annual Meeting on Japanese Economic Association, Kyoto University, Kyoto, Japan, June 6-7, 2009 (presented in Japanese)

  55. Respect for 2-unanimity and strategy-proofness in many-to-one matching problems, Mathematical Economics Monday Seminar in Keio University, Keio University, Tokyo, Japan, May 25, 2009 (presented in Japanese)

  56. Population normalized balanced contributions property and the per-capita Shapley value, Game Theory Workshop, Waseda University, Tokyo, Japan, January 29, 2009

  57. Respect for 2-unanimity and strategy-proofness in many-to-one matching problems, G-COE GLOPE Lunch Time Seminar, Waseda University, Tokyo, Japan January 20, 2009 (presented in Japanese)

  58. Strategy-proof mechanisms and uniqueness of matching in marriage markets, Games 2008 Third World Congress of the Game Theory Society, Northwestern University, Evanston, Illinois, USA, July 13-17, 2008

  59. Strategy-proof mechanisms and uniqueness of matching in marriage markets, Semi-Annual Meeting on Japanese Economic Association, Tohoku University, Sendai, Japan, May 31-June1, 2008 (presented in Japanese)

  60. Strategy-proof mechanisms and uniqueness of matching in marriage markets, GLOPE-TCER Joint Junior Workshop, Waseda University, Tokyo, Japan, Februaly 9, 2008

  61. Cooperative games with two-level networks, The 3rd Spain Italy Netherlands Meeting on Game Theory, Madrid, Spain, July 4-6, 2007

  62. Cooperative games with two-level networks, Design Science Young Seminar, Osaka, Japan, Februaly 2, 2007 (presented in Japanese)

  63. Cooperative games with two-level networks, 21COE-GLOPE International Conference in Amsterdam, University of Amsterdam, Amsterdam, the Netherlands, October 30-31, 2006

Discussant

1. Annual Meeting on Japan Law and Economics Association, Meiji University, Tokyo, Japan, November 30-December 1, 2024.

2. Semi-Annual Meeting on Japan Association of Applied Economics, Kyusyu University, Fukuoka, Japan, June 8-9, 2024.

3. 14th meeting on Japan Association of Political Economy, Waseda University, Tokyo, March 3, 2023. 

4. 14th meeting on Japan Association of Political Economy, Waseda University, Tokyo, March 3, 2023. 

5. Semi-Annual Meeting on Japanese Economic Association, Waseda University, Tokyo, Japan, October 10-11, 2016.

6. Semi-Annual Meeting on Japanese Economic Association, Kyusyu Sangyo University, Fukuoka, Japan, October 7-8, 2012.

7. The Sixth Asian General Equilibrium Theory Workshop, Waseda University, Tokyo, Japan, July 31-August 1, 2009.

Principal Investigator

• 1. Grant-in-Aid for Scientific Research (C) (KAKENHI 25K05018, April 2025-March 2028)

  2. Grant-in-Aid for Scientific Research (C) (KAKENHI 19K01569, April 2019-March 2024)

  3. Grant-in-Aid for Young Scientists (B) (KAKENHI 15K17031, April 2015-March 2019)

  4. Grant-in-Aid for Young Scientists (B) (KAKENHI 24730174, April 2012-March 2015)

  5. Grant-in-Aid for Research Activity Start-up (KAKENHI 22830101, April 2010-March 2012)

  6. Grant-in-Aid for JSPS Fellows (KAKENHI 08J08748, April 2008-March 2010)

Co-investigator

• 1. Grant-in-Aid for Scientific Research (B) (KAKENHI 22H00829, April 2022-March 2027)

  2. Grant-in-Aid for Scientific Research (B) (KAKENHI 17H02503, April 2017-March 2022)

• 1. Azusa Ono Memorial Award (March 2007) Waseda University

• • April 2018-present, Professor, Faculty of Economics, Fukuoka University

  • April 2013-March 2018, Associate Professor, Faculty of Economics, Fukuoka University

  • April 2012-March 2013, Lecturer, Faculty of Economics, Fukuoka University

  • April 2010-March 2012, Research Associate, Faculty of Political Science and Economics, Waseda University

  • April 2008-March 2010, JSPS Research Fellow (DC2)

• Ph.D., Economics, Waseda University, 2011

• M.A., Economics, Waseda University, 2007

• B.A., Economics, Waseda University, 2005

Undergraduate, Fukuoka Univ.

• 1. Reading of Foreign Books (Japanese, 2012)

  2. Introductory Economics (Japanese, 2012-2013)

  3. Microeconomics (Japanese, 2012-)

  4. Theoretical Economics (Japanese, 2016-2017)

  5. Mechanism Design (Japanese, 2018-)

  6. Freshman Seminar (Japanese, 2015-)

  7. Basic Seminar (Japanese, 2013-)

  8. Seminar (for Junior, Japanese, 2013-)

  9. Seminar (for Senior, Japanese, 2014-)

Undergraduate, Waseda Univ.

• 10. Game Theory (Japanese, 2019)

Graduate School of Economics, Fukuoka Univ.

• 11. Cooperative Game Theory (Japanese, 2013)

  12. Introductory Microeconomics (English, 2019/Japanese, 2021)

Graduate School of Economics, Waseda Univ.

• 13. Cooperative Game Theory (English, 2019)