The Othogonality of Martingale in Birkhoff’s sense and others
Suha Jumaa, H.H.Ibrahim · Tikrit Journal of Pure Science · 2019
Orthogonality is one of an important the concepts in Mathematics , therefor it will be discussed in this paper, the orthogonality of martingale according to Birkhoff ’s, Roberts’s, Singer’s, Carlsson’s sense for orthogonality and the conditions that are needed to have orthogonality