JI Ronglin, ZHOU Jinming. Convexity of g-expectations and its application[J]. Acta Scientiarum Naturalium Universitatis SunYatseni, 2018,57(5):127-131.
JI Ronglin, ZHOU Jinming. Convexity of g-expectations and its application[J]. Acta Scientiarum Naturalium Universitatis SunYatseni, 2018,57(5):127-131.DOI:
Under the basic assumptions on generators,the one-to-one correspondence between convexity and conditional convexity of
g-
expectations and generators of backward stochastic differential equations is obtained. Thus it is proved that the definitions of dynamic convex risk measures in Detlefsen-Scandolo (2005) and Jiang (2008) are completely same under the framework of
g-
expectations. Moreover
the one-to-one relation between time consistent dynamic convex risk measures via