Are Multiplicative Inverses in Z_n Equivalent Modulo n?

  • Thread starter Thread starter kathrynag
  • Start date Start date
  • Tags Tags
    Inverse Proof
Click For Summary
SUMMARY

The discussion centers on proving that if [b] and [c] are multiplicative inverses of [a] in the modular arithmetic system Z_{n}, then b is congruent to c modulo n (b ≡ c mod n). The participants confirm that the equations [a][b] = 1 and [a][c] = 1 are correct, establishing the foundational relationships necessary for the proof. The conclusion drawn is that the multiplicative inverse property in modular arithmetic guarantees the equivalence of the inverses under modulo n.

PREREQUISITES
  • Understanding of modular arithmetic, specifically Z_{n}
  • Knowledge of multiplicative inverses in number theory
  • Familiarity with congruences and equivalence relations
  • Basic algebraic manipulation skills
NEXT STEPS
  • Study the properties of multiplicative inverses in Z_{n}
  • Learn about congruences and their applications in number theory
  • Explore proofs involving modular arithmetic, focusing on equivalence relations
  • Investigate the implications of the Chinese Remainder Theorem in modular systems
USEFUL FOR

This discussion is beneficial for students studying abstract algebra, particularly those focusing on number theory and modular arithmetic. It is also useful for educators teaching these concepts and anyone interested in mathematical proofs involving congruences.

kathrynag
Messages
595
Reaction score
0

Homework Statement


Show that if and [c] are multiplicative inverses of [a] in [tex]Z_{n}[/tex], then b[tex]\equiv[/tex]c mod n.


Homework Equations





The Attempt at a Solution


I'm totally confused on this.
 
Physics news on Phys.org
[a]=1 and [a][c]=1, right?
 

Similar threads

  • · Replies 16 ·
Replies
16
Views
5K
  • · Replies 12 ·
Replies
12
Views
3K
  • · Replies 6 ·
Replies
6
Views
2K
  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 1 ·
Replies
1
Views
2K
  • · Replies 3 ·
Replies
3
Views
1K
  • · Replies 4 ·
Replies
4
Views
3K
Replies
9
Views
2K
  • · Replies 4 ·
Replies
4
Views
4K
  • · Replies 1 ·
Replies
1
Views
2K