I bought an ipad app TeX writer and I am wondering if I can draw a commutative diagram.
It includes the packages
I could draw commutative diagram using a package amscd but it does not produce commutative diagram with a diagonal arrow. Is there any package that I can use on TeX Writer with which I can draw a commutative diagram with a diagonal arrow.
It seems that one can add other packages and I tried but it did not work for me.
(I am not familiar those technical language.)