Commutative linear operators and their properties

Click For Summary
SUMMARY

Commutative linear operators possess significant properties, including the existence of at least one common eigenvector when two operators commute. Furthermore, these operators can be simultaneously diagonalized if they are diagonalizable. The discussion emphasizes the importance of understanding the conditions under which diagonalization occurs, particularly in the context of 2x2 matrices. The thread also highlights the necessity of posting in the correct forum section to receive appropriate assistance.

PREREQUISITES
  • Understanding of linear operators and their properties
  • Knowledge of eigenvectors and eigenvalues
  • Familiarity with diagonalization of matrices
  • Basic concepts of linear algebra
NEXT STEPS
  • Research the conditions for diagonalization of matrices
  • Study the spectral theorem for symmetric operators
  • Explore the implications of commuting operators in quantum mechanics
  • Learn about the Jordan form and its relation to diagonalization
USEFUL FOR

Students and professionals in mathematics, particularly those studying linear algebra, as well as physicists interested in the applications of linear operators in quantum mechanics.

McLaren Rulez
Messages
289
Reaction score
3
Can someone help me with this? When two linear operators commute, I know how to show that they must have at least one common eigenvector. Beyond this fact, what else can be said about commutative operators and their eigenvectors? Further, can they be diagonalized simultaneously (or actually, can they be diagonalized in the first place?), and if so, how can this be proved?
 
Physics news on Phys.org
I wished to know about this but no one is responding to this thread. Please, can one somebody help?
 
kthouz said:
I wished to know about this but no one is responding to this thread. Please, can one somebody help?

Well, what have you thought about so far? Take 2x2 matrices. Can you find one that can't be diagonalized?
 
kthouz, I asked this question again at https://www.physicsforums.com/showthread.php?t=501340

It was a mistake on my part as I had posted this in homework section instead of linear algebra where it belongs. That's why you are not getting replies. If you have a different question from what I asked in the link, try posting a new thread in the linear algebra section. You will definitely get help
 

Similar threads

  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 19 ·
Replies
19
Views
3K
  • · Replies 43 ·
2
Replies
43
Views
5K
Replies
18
Views
2K
  • · Replies 12 ·
Replies
12
Views
2K
  • · Replies 2 ·
Replies
2
Views
3K
  • · Replies 18 ·
Replies
18
Views
4K
  • · Replies 5 ·
Replies
5
Views
5K
  • · Replies 5 ·
Replies
5
Views
2K
  • · Replies 2 ·
Replies
2
Views
3K