\def\tree{\'arvore}
\def\Tree{\'Arvore}
\def\subtree{sub-\tree}
\def\binary{bin\'aria}
\def\mary{m-\'aria}
\def\bintree{\tree\ \binary}
\def\binstree{\tree\ \binary\ de pesquisa}
\def\btree{\tree-$B$}
\def\bstar{\tree-$B^*$}
\def\bplus{\tree-B$^+$}
\def\trie{\emph{trie}}
\def\node{n\oo}
\def\innode{\node\ interno}
\def\innodes{\node s internos}
\def\exnode{\node\ externo}
\def\bal{balanceada}
\def\pth{caminho}
\def\dph{profundidade}
\def\lvl{n\ii vel}
\def\hgt{altura}
\def\wgt{peso}
\def\rptr{refer\^encia}

\def\bint#1{\ensuremath{bint.#1}}
\def\binst#1{\ensuremath{binst.#1}}
\def\xnullnd{\ensuremath{\bot}}
\def\xbinnd#1#2#3{\ensuremath{\langle #1,#2,#3\rangle}}
\def\xhgt#1{\ensuremath{h #1}}
\def\bintih#1{\ensuremath{\bndA{x}{x\in\bint A\land \xhgt x<k}{R x}}}

