~~DISCUSSION:off~~
===== David Pavel =====

=== Sandbox ===
Edit: e) by dle mě mohlo být takto:
\\

<math>
o(t) = \left\{
  t \geq 2 \quad \ldots \quad i(t-2) 
    \quad\left\{
      \quad t-2 < 1 \Leftrightarrow t < 3 \quad\ldots\quad \frac{1}{2} 
      \\
      \quad t-2 \geq 1 \Leftrightarrow t \geq 3 \quad\ldots\quad 1
    \right.  
  \\
  t < 2 \quad\ldots\quad i(t)   
    \quad\left\{
      t < 1 \quad\ldots\quad \frac{1}{2}
      \\
      t \geq 1 \quad\ldots\quad 1      
    \right.  
  
\right.
</math>