He attempted to rework Sidgwick's philosophy from the perspective of Fechner's psychophysics in his first book, New and Old Methods of Ethics.  His major book wasn't much noticed until the 1950s, when Shubik and Scarf took up his notion of "final settlements" in their work on game theory.  Two years after publishing that major book, he shifted gears and devoted himself to mathematical statistics, which led to his becoming the first editor of the Economic Journal.  The concepts of offer, contract, and indifference curves were all introduced by him, as was the general utility function, and he anticipated the Pareto optimum in 1881's Mathematical Psychics.  FTP, name th
He attempted to rework Sidgwick's philosophy from the perspective of Fechner's psychophysics in his first book, New and Old Methods of Ethics.  His major book wasn't much noticed until the 1950s, when Shubik and Scarf took up his notion of "final settlements" in their work on game theory.  Two years after publishing that major book, he shifted gears and devoted himself to mathematical statistics, which led to his becoming the first editor of the Economic Journal.  The concepts of offer, contract, and indifference curves were all introduced by him, as was the general utility function, and he anticipated the Pareto optimum in 1881's Mathematical Psychics.  FTP, name this student of Jevons, a British economist best known for his eponymous box.
He attempted to rework Sidgwick's philosophy from the perspective of Fechner's psychophysics in his first book, New and Old Methods of Ethics.  
Francis Edgeworth