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   CSR Sec CTP Curvature Risk Position Down
    
        
            | Description | 
            The bucket level capital requirement under the downward scenario | 
        
        
        
            
              | Variations | 
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            | Hierarchies required in the view | 
            
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            | Reference | 
            [MAR21.5] | 
        
        
    
          
          
          
        
        
            | Notation | 
            $K_b^{-}$ | 
        
        
        
        
            | Formula | 
            $$K_{b}^{-} =\sqrt{max\left(0,\sum _{k\in b} max(CVR_k^{-},0)^{2} +\sum _{k\in b}\sum _{l\in b, l\neq k}\rho_{kl}\cdot CVR_k^{-} \cdot CVR_l^{-} \cdot \psi(CVR_k^{-},CVR_l^{-})\right)}$$ | 
        
        
    
 
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