Hi all, I'm torn between taking complex analysis or differential geometry at the advanced third year level. Which of these would you consider the easiest to self-learn or the least applicable to the study of theoretical physics? I know that differential geometry shows up in general relativity but I'm not sure about relativistic quantum mechanics and other advanced theories. Are there actually any serious uses of complex analysis other than contour integration?? It seems like complex analysis is all the hype but I've never actually seen it USED for anything other than this. Thanks.