Let A={x,y} and let S be the set of all strings over A . Define a relationC from S to S as follows: For all strings s and t in S , (s,t)∈Cmeans thatt=ys.Then C is a function because every string in S consists entirely of x ’s andy ’s and adding an additional y on the left creates a single new string that consists of x ’s and y ’s and is, therefore, also in S . Find C(x) andC(yyxyx) .
Let A={x,y} and let S be the set of all strings over A . Define a relationC from S to S as follows: For all strings s and t in S , (s,t)∈Cmeans thatt=ys.Then C is a function because every string in S consists entirely of x ’s andy ’s and adding an additional y on the left creates a single new string that consists of x ’s and y ’s and is, therefore, also in S . Find C(x) andC(yyxyx) .
Elements Of Modern Algebra
8th Edition
ISBN:9781285463230
Author:Gilbert, Linda, Jimmie
Publisher:Gilbert, Linda, Jimmie
Chapter1: Fundamentals
Section1.7: Relations
Problem 18E: Let (A) be the power set of the nonempty set A, and let C denote a fixed subset of A. Define R on...
Related questions
Question
Let
A
=
{
x
,
y
}
and let
S
be the set of all strings over
A
. Define a relation
C
from
S
to
S
as follows: For all strings
s
and
t
in
S
,
(
s
,
t
)
∈
C
means that
t
=
ys
.
Then
C
is a function because every string in
S
consists entirely of
x
’s and
y
’s and adding an additional
y
on the left creates a single new string that consists of
x
’s and
y
’s and is, therefore, also in
S
. Find
C
(
x
)
and
C
(
yyxyx
)
.
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