On the Uniqueness in Law and the Pathwise Uniqueness for Stochastic Differential Equations
    
    
  
  
  
      
      
      
        
Teoriâ veroâtnostej i ee primeneniâ, Tome 46 (2001) no. 3, pp. 483-497
    
  
  
  
  
  
    
      
      
        
      
      
      
    Voir la notice de l'article provenant de la source Math-Net.Ru
            
              			We prove that the uniqueness in law for an SDE 
\begin{equation}
dX_t^i=b_t^i(X)\,dt+\sum_{j=1}^m\sigma_t^{ij}(X)\,dB_t^j, \qquad X_0^i=x^i,\quad i=1,\dots,n,\quad
\tag{1}
\end{equation}
implies the uniqueness of the joint distribution of a pair $(X,B)$. 
Moreover, we prove that the uniqueness in law for (1), together with the strong existence, guarantees the pathwise uniqueness. This result is somehow “dual” to the theorem of Yamada and Watanabe.
			
            
            
            
          
        
      
                  
                    
                    
                    
                    
                    
                      
Keywords: 
stochastic differential equations, weak solutions, strong solutions, uniqueness in law, pathwise uniqueness, theorem of Yamada and Watanabe.
                    
                  
                
                
                @article{TVP_2001_46_3_a4,
     author = {A. S. Cherny},
     title = {On the {Uniqueness} in {Law} and the {Pathwise} {Uniqueness} for {Stochastic} {Differential} {Equations}},
     journal = {Teori\^a vero\^atnostej i ee primeneni\^a},
     pages = {483--497},
     publisher = {mathdoc},
     volume = {46},
     number = {3},
     year = {2001},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TVP_2001_46_3_a4/}
}
                      
                      
                    TY - JOUR AU - A. S. Cherny TI - On the Uniqueness in Law and the Pathwise Uniqueness for Stochastic Differential Equations JO - Teoriâ veroâtnostej i ee primeneniâ PY - 2001 SP - 483 EP - 497 VL - 46 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TVP_2001_46_3_a4/ LA - ru ID - TVP_2001_46_3_a4 ER -
A. S. Cherny. On the Uniqueness in Law and the Pathwise Uniqueness for Stochastic Differential Equations. Teoriâ veroâtnostej i ee primeneniâ, Tome 46 (2001) no. 3, pp. 483-497. http://geodesic.mathdoc.fr/item/TVP_2001_46_3_a4/
