My own interests gradually shifted from the pure theory of social choice to more "practical" problems.

本人研究方向从社会选择纯理论逐渐转向更为实际的诸多问题。

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In this paper, the unique existence condition of minimal determining set in social choice theory is researched, and the relation between minimal determining set and choice function is analyzed.

本文研究了社会选择理论中最小决定集的唯一存在性条件，分析了最小决定集与选择函数之间的相互联系。

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Rational Choice Theory proposed by Coleman answered the question of social order.

科尔曼提出了理性选择理论对新的基础上“社会秩序”问题作出回答。

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This result is so devastating that many public choice economists themselves, including the father of social choice theory Kenneth Arrow, refuse to acknowledge what it implies: The myriad paradoxes and infirmities infecting democracy prevent it from ever living up to expectations that it can be a stable and efficient means of guiding and improving society.

FORBES: The Myriad Infirmities of Democracy