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A binary tree can be recursively defined as follows. A single

 
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Customer Question

A binary tree can be recursively defined as follows.
A single vertex is a binary tree. (This single vertex is the root of this binary tree.)
If T1 and T2 are binary trees, then so is the result of the following construction.
– Create a new vertex. (This vertex will become the root of the new binary tree.)
– Add an edge between this new root vertex and the roots of T1 and T2.
Prove the following for all binary trees:
• Root vertices either have degree 0 or 2 and are the only vertices with these degrees.
The number of degree 1 vertices is 2 more than the number of degree 3 vertices.
(Hint: It will be simpler to combine the two properties in a single proof.)

 

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Level/Year: First year
Subject: Discrete Structures

Submitted: 370 days and 18 hours ago.
Category: Homework
Value: CA$70
Status: CLOSED

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Expert:  David replied 370 days and 17 hours ago.

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Category: Homework
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Accepts: 450
Answered: 4/4/2012

Experience: PhD in Theoretical Physics

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Customer replied 370 days and 7 hours ago.

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Expert:  David replied 369 days and 18 hours ago.

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