deletions | additions       diff --git a/paragraph_2_Mimic_the_derivation__.tex b/paragraph_2_Mimic_the_derivation__.tex  index 132dbf0..5fb8b87 100644  --- a/paragraph_2_Mimic_the_derivation__.tex  +++ b/paragraph_2_Mimic_the_derivation__.tex 
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\\  $ {\Omega^{-} \{\Omega^{-}  \equiv {(x,t) : 0 < t < \infty, -\infty < x < \varepsilon(t)}}$ \varepsilon(t)\}$  \\$ {\Omega^{+} \{\Omega^{+}  \equiv {(x,t) : 0 < t < \infty, \varepsilon(t) < x <+\infty} }$ <+\infty\} $