the representation and now we have one neural network the predictor right here that takes the representation of one of the image versions and it simply tries to predict the representation of the other image version so what you want is that Q of Z equals Z prime okay and if we expand that is that Q of F of Z is equal to F target of Z prime and if we expand that even further you can see that Q I'll just write Q and F for now Q of F of a which is an augmentation an augmentation of Z should be one bracket to bracket three bracket should be F of