Problem 5. Consider the tree drawn below. a b e f i a. Suppose we designate vertex e as the root. List the children, parents and siblings of each vertex. Does any vertex other than e have grandchildren? b. Suppose e is not chosen as the root. Does our choice of root vertex change the number of children e has? The number of grandchildren? How many are there of each? c. In fact, pick any vertex in the tree and suppose it is not the root. Explain why the number of children of that vertex does not depend on which other vertex is the root. d. Does the previous part work for other trees? Give an example of a different tree for which it holds. Then either prove that it always holds or give an example of a tree for which it doesn't.
Problem 5. Consider the tree drawn below. a b e f i a. Suppose we designate vertex e as the root. List the children, parents and siblings of each vertex. Does any vertex other than e have grandchildren? b. Suppose e is not chosen as the root. Does our choice of root vertex change the number of children e has? The number of grandchildren? How many are there of each? c. In fact, pick any vertex in the tree and suppose it is not the root. Explain why the number of children of that vertex does not depend on which other vertex is the root. d. Does the previous part work for other trees? Give an example of a different tree for which it holds. Then either prove that it always holds or give an example of a tree for which it doesn't.
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Transcribed Image Text:Problem 5. Consider the tree drawn below.
a
b
e
f
i
a. Suppose we designate vertex e as the root. List the children, parents and siblings of each vertex.
Does any vertex other than e have grandchildren?
b. Suppose e is not chosen as the root. Does our choice of root vertex change the number of
children e has? The number of grandchildren? How many are there of each?
c.
In fact, pick any vertex in the tree and suppose it is not the root. Explain why the number of
children of that vertex does not depend on which other vertex is the root.
d.
Does the previous part work for other trees? Give an example of a different tree for which it
holds. Then either prove that it always holds or give an example of a tree for which it doesn't.
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