Fixed a typo in properties of ET-sequences

[saga.git] / dyn.tex

diff --git a/dyn.tex b/dyn.tex
index 95d9340cc4fd6ca82bd055fb9db5cdb9524cff6f..d8c898d144210096e2678d7b82a04bda4b69407b 100644 (file)
--- a/dyn.tex
+++ b/dyn.tex
@@ -208,7 +208,7 @@ when it is invoked on the root of the tree:
 \:Record~$v$ in the sequence.
 \:For each son~$w$ of~$v$:
 \::Call $\<ET>(w)$.
-\::Record~$w$.
+\::Record~$v$.
 \endalgo
 \>A~single tree can have multiple ET-sequences, corresponding to different orders in which the
 sons can be enumerated in step~2.
@@ -229,7 +229,7 @@ transforms from $AuvuC$ to $AuC$ and $v$~alone.
 
 \em{Changing the root} of the tree~$T$ from~$v$ to~$w$ changes its ET-sequence from $vAwBwCv$ to $wBwCvAw$.
 If $w$~was a~leaf, the sequence changes from $vAwCv$ to $wCvAw$. If $vw$ was the only edge of~$T$,
-the sequence $vw$ becomes $wv$. Note that this works regardless of the possible presence of~$w$ inside~$B$.
+the sequence $vwv$ becomes $wvw$. Note that this works regardless of the possible presence of~$w$ inside~$B$.
 
 \em{Joining} the roots of two trees by a~new edge makes their ET-sequences $vAv$ and~$wBw$
 combine to $vAvwBwv$. Again, we have to handle the cases when $v$ or~$w$ has degree~1 separately: