The Cayley Trick for Tropical Hypersurfaces With a View Toward Ricardian   Economics
  The purpose of this survey is to summarize known results about tropical hypersurfaces and the Cayley Trick from polyhedral geometry. This allows for a systematic study of arrangements of tropical hypersurfaces and, in particular, arrangements of tropical hyperplanes. A recent application to the Ricardian theory of trade from econometrics is explored. 
Michael Joswig
math.CO