Просмотр кода страницы Leaf density

'''Leaf density''' --- листовая плотность. 

The '''leaf density''' <math>\zeta(G)</math> of <math>G</math> is defined as

<math>\zeta(G) = \frac{l(G) - s(G)}{n}.</math>

Here, <math>l(G)</math> is the number of leaves in <math>G</math>, <math>s(G)</math> is the number of
stems (a vertex that is adjacent to a leaf is called a '''stem''').