What Are Commutators and Their Role in Quantum Mechanics?

schumi1991`
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Commutators In quantum...!

Recently my class was taught about commutators and their applications in angular momentum operator.Unfortunately due to health reasons I was not able to attend them and now can't get any extra classes and to make things worse the books I was consulting don't have this topic altogether.
I would really like to ask as to what is a commutator and what is it doing in quantum mechanics.
I have previous knowledge of operators of momentum(p) and energy(E).
Also I have no idea whatsoever about the hamiltonian operator...
PLease i really need help in this one as it's quite an important topic I have been told...
Thank You..
Also It would be greatly helpful if you could tell me as to where can I find study material related to it online...
:)
 
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Thanks... and I'm sorry for the premature bumping...
 


schumi1991, You'll get a quicker response the next time if you don't...scream!
 


yeah I got that... And I again apologize to the forum.. :(
THanx
 

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