This allows more flexibility .
Is very similar in the non-effective case , since whenever a supermartingale d is given , there is a modified function d ' which wins at least as much money as d and which is actually a martingale .
This allows more flexibility , and is very similar in the non-effective case , since whenever a supermartingale d is given , there is a modified function d ' which wins at least as much money as d and which is actually a martingale .