In this paper, we formulate a finite population variation of the Fisher-KPP equation using fact that reaction term can be generated from replicator dynamic two-player two-strategy skew-symmetric game. We use prior results Ablowitz and Zeppetella to show resulting system partial differential equations admits travelling wave solution, there are closed form solutions for wave. Interestingly, solut...

In panel experiments, we randomly assign units to different interventions, measuring their outcomes, and repeating the procedure in several periods. Using potential outcomes framework, define finite population dynamic causal effects that capture relative effectiveness of alternative treatment paths. For a rich class effects, provide nonparametric estimator is unbiased over randomization distrib...