deletions | additions       diff --git a/Ex 1.tex b/Ex 1.tex  index 0f2fa09..4f4d034 100644  --- a/Ex 1.tex  +++ b/Ex 1.tex 
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Given:  \begin{equation}  \begin{split}  Q &= &:  \empty = \T\\ R &= &:  0 \leq y \a (0 \leq x \to y = x) \a (x < 0 \to y = -x) \end{split}  \end{equation}