 Secondly we study in detail Azema-Yor martingales defined from a non-negative local martingale converging to zero at infinity.
<fluency>  Secondly we study in detail Azema-Yor martingales defined from a non-negative local martingale converging to zero at infinity.
 Secondly we study in detail Azema-Yor martingales defined from a nonnegative local martingale converging to zero at infinity.