well i am not good at explaning but do read his books, You will get them and if you dont get them for the first time leave that for a while let it get processed at background and read after some time. You will get it what he is trying to say. Start with Four dimenssional Stock market. I have that book in Hard Copy so wont be possible for me share but i hope it could be found,
Bradley Cowan has an excellent number of books, even so begin to really understand each of his ideas raised methodologically can take time, I say this from my own experience and still leave you with experimental doubts.
Bradley F Cowan - Four Dimensional Stock Market Structures and Cycles.pdf
Bradley F Cowan - Market Science Vol I - Square of Twelve.pdf
Bradley F Cowan - Market Science Volume II - Market Dynamics.pdf
Bradley F Cowan - Pentagonal Time Cycle Theory.pdf