deletions | additions       diff --git a/Ex 1.tex b/Ex 1.tex  index 321b58e..0b89004 100644  --- a/Ex 1.tex  +++ b/Ex 1.tex 
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Given:  \begin{equation}  \begin{split}  Q &= \empty\\ \empty = \T\\  R &= 0 \leq y \a (0 \leq x \to y = x) \a (x < 0 \to y = -x)  \end{split}  \end{equation}