This is a page for various notes and quick tests …

Many times I had someone on the other part of the line and 
wanted to talk about mathematics ... so you need some space 
where you can quickly type some ideas in LaTeX and the other
person with internet connection can read it ... 

Embedding PHP works, writing “test” via php: <php> echo “test”; </php>

Writing Mathematics in LaTeX, starting with some formula $$ \begin{equation} \psi(x) := \int_{0}^{1} k(x,y) \varphi(y) ds(y) \end{equation} $$ Works, that is fantastic and now we can communicate appropriately!