\qed
\cor
-For graphs with edge density at least $\log n$, this algorithm runs in linear time.
+For graphs with edge density $\Omega(\log n)$, this algorithm runs in linear time.
\remn{Other heaps}%
We can consider using other kinds of heaps that have the property that inserts
going from the $(i+1)$-th to the $i$-th level of the tree.
The levels are numbered from the bottom, so leaves are at level~0 and the root
is at level $\ell\le \lceil \log_2 n\rceil$. There are $n_i\le n/2^i$ vertices
-at the $i$-th level, so we consider exactly $n_i$ edges. To avoid taking a~logarithm
+at the $i$-th level, so we consider exactly $n_i$ edges. To avoid taking a~logarithm\foot{All logarithms are binary.}
of zero, we define $\vert T_e\vert=1$ for $T_e=\emptyset$.
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\ialign{\strut\hfil$\displaystyle{##}$&$\displaystyle{{}##}$\hfil