Before revision:  These constraints are modeled by predictable convex-set-valued processes whose values do not necessarily contain the origin, i.e.,  no risky investment at all may be inadmissible .
After revision:  These constraints are modeled by predictable convex-set-valued processes whose values do not necessarily contain the origin, i.e., it may be inadmissible for an investor to hold no risky investment at all may be inadmissible .