The term Lausanne School was coined by the mathematician
Hermann Laurent in his article ''Petit traite d'economie politique mathematique
(Small Treatise on Mathematical Political Economy''). The central feature of the Lausanne School was its development of
general equilibrium theory. Laurent's article presented a simplified version of this theory. Italian economic historians have adopted
Luigi Einaudi's description that the age of the Lausanne School in Italy should be called "Italian school". Marshall, on the other hand, preferred to solve economic problems using mathematics as the instrument, with the theorist drawing out conclusions instead of coming up with solutions through the process of verbal reasoning. Its theorists such as Walras proposed that it can be done through a notion of justice in exchange called "commutative justice", which required all traders to face the same price, which did not change, for a given product. This free competition is said to produce "maximum welfare", allowing for an effective evaluation of questions of welfare. Hans Mayer argued against Lausanne School, citing that its assumptions are unrealistic and that the utility of a good cannot be measured, infinitely divided, nor indefinitely substituted. Members of the Lausanne School include Basile Samsonoff, Marie Kolabinska, and Pierre Boven, who were all students of Pareto. ==References==