Single-crossing dominance: A preference lattice
研究了单交叉占优的格结构，证明了任意偏好集最小上界的刻画、存在性和唯一性，并应用于集体选择和分析师不确定性下的比较静态分析，以及刻画一类不确定性规避偏好。
Most comparisons of preferences are instances of single-crossing dominance. We examine the lattice structure of single-crossing dominance, proving characterisation, existence and uniqueness results for minimum upper bounds of arbitrary sets of preferences. We apply these theorems to derive new comparative statics theorems for collective choice and under analyst uncertainty, and to characterise a general 'maxmin' class of uncertainty-averse preferences over Savage acts.