Hilbert space. Self-adjoint operator. [closed]












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Let H be a Hilbert space, A is self-adjoint operator, $ x notin KerA $. How to prove that $ a_{n}=frac{parallel A^{n+1}xparallel}{parallel A^nx parallel} $ sequence converges?










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closed as off-topic by Saad, Eevee Trainer, mrtaurho, José Carlos Santos, Paul Frost Dec 23 '18 at 16:15


This question appears to be off-topic. The users who voted to close gave this specific reason:


  • "This question is missing context or other details: Please provide additional context, which ideally explains why the question is relevant to you and our community. Some forms of context include: background and motivation, relevant definitions, source, possible strategies, your current progress, why the question is interesting or important, etc." – Saad, Eevee Trainer, mrtaurho, José Carlos Santos, Paul Frost

If this question can be reworded to fit the rules in the help center, please edit the question.












  • 2




    $begingroup$
    Have you tried using the spectral theorem?
    $endgroup$
    – Eric Wofsey
    Dec 23 '18 at 5:57










  • $begingroup$
    @EricWofsey don't you need to assume something more about $A$?
    $endgroup$
    – lcv
    Dec 23 '18 at 10:30
















1












$begingroup$


Let H be a Hilbert space, A is self-adjoint operator, $ x notin KerA $. How to prove that $ a_{n}=frac{parallel A^{n+1}xparallel}{parallel A^nx parallel} $ sequence converges?










share|cite|improve this question









$endgroup$



closed as off-topic by Saad, Eevee Trainer, mrtaurho, José Carlos Santos, Paul Frost Dec 23 '18 at 16:15


This question appears to be off-topic. The users who voted to close gave this specific reason:


  • "This question is missing context or other details: Please provide additional context, which ideally explains why the question is relevant to you and our community. Some forms of context include: background and motivation, relevant definitions, source, possible strategies, your current progress, why the question is interesting or important, etc." – Saad, Eevee Trainer, mrtaurho, José Carlos Santos, Paul Frost

If this question can be reworded to fit the rules in the help center, please edit the question.












  • 2




    $begingroup$
    Have you tried using the spectral theorem?
    $endgroup$
    – Eric Wofsey
    Dec 23 '18 at 5:57










  • $begingroup$
    @EricWofsey don't you need to assume something more about $A$?
    $endgroup$
    – lcv
    Dec 23 '18 at 10:30














1












1








1





$begingroup$


Let H be a Hilbert space, A is self-adjoint operator, $ x notin KerA $. How to prove that $ a_{n}=frac{parallel A^{n+1}xparallel}{parallel A^nx parallel} $ sequence converges?










share|cite|improve this question









$endgroup$




Let H be a Hilbert space, A is self-adjoint operator, $ x notin KerA $. How to prove that $ a_{n}=frac{parallel A^{n+1}xparallel}{parallel A^nx parallel} $ sequence converges?







functional-analysis






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share|cite|improve this question











share|cite|improve this question




share|cite|improve this question










asked Dec 23 '18 at 1:59









T. ElmiraT. Elmira

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closed as off-topic by Saad, Eevee Trainer, mrtaurho, José Carlos Santos, Paul Frost Dec 23 '18 at 16:15


This question appears to be off-topic. The users who voted to close gave this specific reason:


  • "This question is missing context or other details: Please provide additional context, which ideally explains why the question is relevant to you and our community. Some forms of context include: background and motivation, relevant definitions, source, possible strategies, your current progress, why the question is interesting or important, etc." – Saad, Eevee Trainer, mrtaurho, José Carlos Santos, Paul Frost

If this question can be reworded to fit the rules in the help center, please edit the question.







closed as off-topic by Saad, Eevee Trainer, mrtaurho, José Carlos Santos, Paul Frost Dec 23 '18 at 16:15


This question appears to be off-topic. The users who voted to close gave this specific reason:


  • "This question is missing context or other details: Please provide additional context, which ideally explains why the question is relevant to you and our community. Some forms of context include: background and motivation, relevant definitions, source, possible strategies, your current progress, why the question is interesting or important, etc." – Saad, Eevee Trainer, mrtaurho, José Carlos Santos, Paul Frost

If this question can be reworded to fit the rules in the help center, please edit the question.








  • 2




    $begingroup$
    Have you tried using the spectral theorem?
    $endgroup$
    – Eric Wofsey
    Dec 23 '18 at 5:57










  • $begingroup$
    @EricWofsey don't you need to assume something more about $A$?
    $endgroup$
    – lcv
    Dec 23 '18 at 10:30














  • 2




    $begingroup$
    Have you tried using the spectral theorem?
    $endgroup$
    – Eric Wofsey
    Dec 23 '18 at 5:57










  • $begingroup$
    @EricWofsey don't you need to assume something more about $A$?
    $endgroup$
    – lcv
    Dec 23 '18 at 10:30








2




2




$begingroup$
Have you tried using the spectral theorem?
$endgroup$
– Eric Wofsey
Dec 23 '18 at 5:57




$begingroup$
Have you tried using the spectral theorem?
$endgroup$
– Eric Wofsey
Dec 23 '18 at 5:57












$begingroup$
@EricWofsey don't you need to assume something more about $A$?
$endgroup$
– lcv
Dec 23 '18 at 10:30




$begingroup$
@EricWofsey don't you need to assume something more about $A$?
$endgroup$
– lcv
Dec 23 '18 at 10:30










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