Several notions of stochastic convexity and concavity and their properties are studied in this paper. Efficient sample path approaches are developed in order to verify the occurrence of these notions ...

Roula Khalaf, Editor of the FT, selects her favourite stories in this weekly newsletter. Want to surprise people at cocktail parties when discussing the 2007-08 financial cataclysm? Just tell them the ...

The concavity exercise asks students to think about erosion in natural forms and how that concavity contrasts with the convexity of the objects. Dominant, subdominant, and subordinate relationships ...