Read Andre Martinet
Reread Andre Martinet’s ELEMENTS DE LINGUISTIQUE GENERALE, 1970. When I was a student in 1970s, the book was already determined the established reputation. Now at rereading, I confirmed that one of his most concerned thing was the amalgamation of moneme, which is still radically never solved . But by his approach or any other similar approached researchers, Martinet-like style of studying is very difficult to progress. I have taken the another way to think on the themes influenced from KARCEVSKIJ Sergej (the early example ;Holomorphic meaning Theory 2008 ) by using the mathematical methods, especially algebraic geometry.