Equivalence Classes of R on Integers: Solution

Click For Summary
SUMMARY

The relation R defined on the integers by xRy if x² = y² results in distinct equivalence classes represented as [n] = {-n, n} for each integer n. This indicates that each integer n corresponds to a unique equivalence class containing both n and -n. There are infinitely many equivalence classes, denoted as [1], [2], [3], and so forth, confirming the infinite nature of this relation on the set of integers.

PREREQUISITES
  • Understanding of equivalence relations in mathematics
  • Familiarity with integer properties and operations
  • Knowledge of set notation and definitions
  • Basic algebraic manipulation involving squares of integers
NEXT STEPS
  • Study the properties of equivalence relations in more depth
  • Explore examples of equivalence classes in different mathematical contexts
  • Learn about the implications of equivalence relations in modular arithmetic
  • Investigate the concept of partitions in set theory
USEFUL FOR

Students studying abstract algebra, mathematics educators, and anyone interested in understanding equivalence relations and their applications in number theory.

.~!@#
Messages
5
Reaction score
0

Homework Statement



R is a relation on the integers, xRy if x^2=y^2. Determine the distinct equivalence classes.



Homework Equations



[x]={yεZ}|yRx} Where Z is the set of integers

The Attempt at a Solution



[n]={-n, n} where n is an integer


is this correct?
 
Physics news on Phys.org
I think you are correct, there are infinitely many equivalence classes though.
[1], [2], [3]...etc.
 

Similar threads

  • · Replies 3 ·
Replies
3
Views
2K
  • · Replies 13 ·
Replies
13
Views
4K
  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 8 ·
Replies
8
Views
2K
  • · Replies 5 ·
Replies
5
Views
4K
Replies
3
Views
2K
  • · Replies 3 ·
Replies
3
Views
2K
  • · Replies 7 ·
Replies
7
Views
1K
  • · Replies 9 ·
Replies
9
Views
3K
  • · Replies 3 ·
Replies
3
Views
1K