Verifying Solutions to Isomorphism Problem: Need Help!

  • MHB
  • Thread starter Joe20
  • Start date
  • Tags
    Isomorphism
In summary, the person has attached a question and solutions to part a and b, and is seeking verification and a simpler method for proving that f is an isomorphism. The speaker then provides feedback on the proof provided by the person.
  • #1
Joe20
53
1
Hi, I have attached the question and the solutions to part a and b of this question. Would like someone to verify if I have done anything wrong. Greatly appreciate it! Thanks.

Would also like to check if there is a simpler method to prove f is an isomorphism? Thanks
 

Attachments

  • q4.png
    q4.png
    10.4 KB · Views: 83
  • Webp.net-resizeimage.jpg
    Webp.net-resizeimage.jpg
    107.6 KB · Views: 85
Physics news on Phys.org
  • #2
Hi Alexis87,

Your proof for part (a) is somewhat circular — the goal was to prove $[a]_6 = _6$ implies $([a]_2,[a]_3) = (_2, _3)$, but you started with that claim. Remove it.

For part (b), remove the beginning part of your proof. To show that $f$ is bijective, you could show that the images $f(j)$, $j = 0,\ldots, 5$, are distinct, and so $f$ is injective. Since $f$ is an injective mapping between two sets of the same cardinality, it is also surjective. Hence, $f$ is bijective.
 

FAQ: Verifying Solutions to Isomorphism Problem: Need Help!

What is the isomorphism problem?

The isomorphism problem is a fundamental problem in mathematics and computer science. It asks whether two mathematical structures are essentially the same, even if they may look different on the surface.

Why is verifying solutions to the isomorphism problem important?

Verifying solutions to the isomorphism problem is important because it allows us to determine if two structures are truly the same, which can have implications in various fields such as cryptography, graph theory, and computer science.

What are some common methods used to verify solutions to the isomorphism problem?

Common methods for verifying solutions to the isomorphism problem include brute force algorithms, graph isomorphism algorithms, and group theory techniques.

Are there any limitations to verifying solutions to the isomorphism problem?

Yes, there are limitations to verifying solutions to the isomorphism problem. In some cases, it may be impossible to determine if two structures are isomorphic, and in other cases, the algorithms used may be computationally expensive and time-consuming.

How does verifying solutions to the isomorphism problem relate to real-world applications?

Verifying solutions to the isomorphism problem has real-world applications in fields such as chemistry, biology, and computer science. For example, in chemistry, it can help identify molecules with similar structures, and in computer science, it can aid in data compression and encryption.

Similar threads

Back
Top