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\htext (4.76 -1.81){$\begin{myframe}{5.2cm} 
$r_{1,1}:=y_1$\\[1.35ex]
Äëÿ $i=2,3,\ldots,m$ \\[1ex]
\quad $r_{1,i}:=\sqrt{r_{1,i-1}^2 + y_i^2 }$\\[2ex]
\quad $c_{1,i}:=\frac{\displaystyle r_{1,i-1}}{\displaystyle r_{1,i}}$ \\[2ex]
\quad $s_{1,i}:=\frac{\displaystyle y_i}{\displaystyle r_{1,i}}$ \\[1.35ex]
$r\triangleq r_{1,m}= \sum\limits_{i=1}^{m}y_i^2=\Vert y \Vert^2 $
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