We use MathJAX to render equations expressed via latex on the browsers. How do you do something similar on the Android platform, if you need to express all mathematical equa
As a commenter already said, you can use MathJax. There's an open source example android app listed on mathjax.org. For a discussion about it, see the MathJax User Group.
If you need to build a more complex editor, there are a growing number of those built on/with MathJax.
[disclaimer: I'm part of MathJax but not affiliated with any of the above.]