|    | 
      
	   |  
          
              
Douglas Farenick,
Ali S. Kavruk,
Vern I. Paulsen,
and Ivan G. Todorov
 
            
Characterizations of the weak expectation property 
view    print 
             |  
			 
			 |  
			
              
                | Published: | 
                November 7, 2018. | 
               
              
                | Keywords: | 
                operator system, tensor product, discrete group, free group, free product, Kirchberg's Conjecture, complete quotient maps, lifting property. | 
               
              
                | Subject: | 
                Primary 46L06, 46L07; Secondary 46L05, 47L25, 47L90. | 
               
              
			 |  
			 
			 |  
			  Abstract
			  
We use representations of operator systems as quotients to deduce various characterisations of the weak expectation property (WEP) for C*-algebras.  
By Kirchberg's work on WEP, these results give new formulations of 
Connes' embedding problem.  | 
           
			
			  
  | 
		   
			
			  | Acknowledgements
		       This work supported in part by NSERC (Canada), NSF (USA), and the Royal Society (United Kingdom). 
  | 
		   
			
			  
			      
		       | 
		   
			
			  | Author information
 Douglas Farenick: 
Department of Mathematics and Statistics  
University of Regina  
Regina, Saskatchewan S4S 0A2, Canada 
douglas.farenick@uregina.ca 
 Ali S. Kavruk: 
Department of Mathematics 
University of Illinois  
Urbana, IL 61801, U.S.A. 
askavruk@vcu.edu 
 Vern I. Paulsen: 
Department of Pure Mathematics 
University of Waterloo  
Waterloo, Ontario N2L 3G1, Canada 
vpaulsen@uwaterloo.ca 
 Ivan G. Todorov: 
Pure Mathematics Research Centre 
Queen's University Belfast  
Belfast, BT7 1NN, United Kingdom 
i.todorov@qub.ac.uk 
  | 
		   
         
       |