Characterization for Q-matrix with Single Instantaneous State
 
                 
                
                    
                                        
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Graphical Abstract
 
                                        
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Abstract
    Let Q be a quasi Q-matrix with single instantaneous state. We obtain the necessary and sufficient conditions for the existence of quasi B-type Q-process. In particular, if Q is quasi-conservative, we obtain the necessary and sufficient conditions for Q to be Q-matrix.
 
                                        
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