Simple proofs of Arrow's theorem:
- https://sites.math.rutgers.edu/~zeilberg/EM22/yu2012.pdf
- http://dido.econ.yale.edu/~gean/art/p1116.pdf
- OG video: https://www.stat.uchicago.edu/~lekheng/meetings/mathofranking/ref/arrow.pdf
Proofs of the median voter theorem:
- OG: https://www.journals.uchicago.edu/doi/10.1086/256633
- https://ocw.mit.edu/courses/14-75-political-economy-and-economic-development-fall-2012/1e6fee72b12146c5feca334f93e788b6_MIT14_75F12_Lec6.pdf
Proofs of the Chichilnisky impossibility theorem: