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Trees are normally drawn upside down, with the root at the top and the leaves at the bottom.
Data Warehousing Fundamentals: A Comprehensive Guide for IT Professionals - Page 412
by Paulraj Ponniah - 2004 - 544 pages

## Graph Theory and Algorithms: 17th Symposium of Research Institute of ...

N. Saito, T. Nishizeki - Computers - 1981 - 216 pages
...operation to obtain the new tree is called the reduction of the tree. A PQ-tree is drawn on a plane with the root at the top and the leaves at the bottom. A node and its children in the tree differ in night by one. (c) St-numbering: Given a graph G and two...

## Proceedings of the Fourth Annual ACM-SIAM Symposium on Discrete Algorithms

Algorithms - 1993 - 506 pages
...the other operations to O(l) each. 2 Deque Trees Consider an ordered tree [21] embedded in the plane with the root at the top and the leaves at the bottom. We exploit the induced left-to-right order of the leaves of the tree to make the tree represent a list....

## Tree Models of Similarity and Association, Issue 112

Dr James E Corter - Medical - 1996 - 65 pages
...to be the most typical. NOTES I It is conventional to discuss rooted trees as if they were oriented with the root at the top and the "leaves" at the bottom. For example, nodes that are relatively close to the root are said to be "high" in the tree, while nodes...

## Sets, Logic and Categories

Peter J. Cameron - Mathematics - 1999 - 182 pages
...well-formed formula can be represented by a tree. As in logic and computer science, trees grow upside down, with the root at the top, and the leaves at the bottom. Each leaf is labelled with a propositional variable p,•. Each node which is not a leaf has a 'type',...

## The Ruby Way

Hal Edwin Fulton - Computers - 2002 - 579 pages
...Kilmer. "Trees" A tree in computer science is a relatively intuitive concept (except that it is usually drawn with the "root" at the top and the "leaves" at the bottom). This is because we are familiar with so many kinds of hierarchical data in everyday life — from the...

## Sams Teach Yourself Ruby in 21 Days

Mark Slagell - Computers - 2002 - 537 pages
...and f. The last two lines establish family hierarchy. Conventionally, a tree is drawn upside down, with the "root" at the top and the "leaves" at the bottom. The tree generated by this code is visualized in Figure 1 2.2. FIGURE 12.2 A tree with six nodes. '...

## All the Mathematics You Missed: But Need to Know for Graduate School

Thomas A. Garrity - Mathematics - 2002 - 347 pages
...the root and w4, u5, uT, u9, u10, ui2 and ^13 are the leaves. We will draw our binary trees top down, with the root at the top and the leaves at the bottom. At each vertex, the two edges that stem down are called the left edge and right edge, respectively....

## Practical C++ Programming

Steve Oualline - Computers - 2003 - 549 pages
...pointer and a right pointer, which point to the left and right subtrees. ' Programming trees are written with the root at the top and the leaves at the bottom. Common sense tells you that this is upside down. In case you haven't noticed, common sense has very...