deletions | additions       diff --git a/Integration summation.tex b/Integration summation.tex  index 1f96106..22061df 100644  --- a/Integration summation.tex  +++ b/Integration summation.tex 
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Questions, can we then define \begin{equation}  \frac{d}{d\mathbb{I}}\sum_k ... \\  \int_a^b f(x) d\mathhbb{I} d\mathbb{I}  \\ \sum_{\mathbb{I}} f_{\mathbb{I}}   \end{equation}