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5.3.  Exercises

1.
P = { (1,hp), (2,paul), (3,pope) }

Q = { (hp, os), (paul, oswego), (bill, wh), (pope, rome) }

Find dom(P), ran(P), dom(Q), ran(Q), P O Q, dom(P O Q), and ran(P O Q)

Draw a graphically representation of the relations.

2.
What are the ranges of the relations
S = { (x, [equation] ) | x [isin] Nat } and
T = { (x, x * 2 ) | x [isin] Nat }

Draw a graphically representation of the relations.

3.
Let R = { (1,2), (1,3), (3,4) }

Find R O R and R O R O R

Draw a graphically representation of the relations.


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Created by unroff & hp-tools. © by Hans-Peter Bischof. All Rights Reserved (1998).

Last modified: 27/July/98 (12:14)