2 papers
math.CO2024
A Note on Ordinally Concave Functions
Satoru Fujishige, Fuhito Kojima, Koji Yokote
The notion of ordinal concavity of utility functions has recently been considered by Hafalir, Kojima, Yenmez, and Yokote in economics while there exist earlier related works in dis…
econ.TH2024
Rationalizing Path-Independent Choice Rules
Koji Yokote, Isa E. Hafalir, Fuhito Kojima +1
Path independence is arguably one of the most important choice rule properties in economic theory. We show that a choice rule is path independent if and only if it is rationalizabl…