I am trying to represent the calculus of relations, from Tarski's paper. How do I represent the following ? SideNote: I did go through http://math.mit.edu/~dspivak/files/symbols-all.pdf and https://www.rpi.edu/dept/arc/training/latex/LaTeX_symbols.pdf and anyother document I could find.
I don't have the reputation to comment, but this website has been very helpful. It allows you to draw a symbol and it does a reverse search of Latex commands.