What is Eigenvalues: Definition and 851 Discussions

In linear algebra, an eigenvector () or characteristic vector of a linear transformation is a nonzero vector that changes at most by a scalar factor when that linear transformation is applied to it. The corresponding eigenvalue, often denoted by



λ


{\displaystyle \lambda }
, is the factor by which the eigenvector is scaled.
Geometrically, an eigenvector, corresponding to a real nonzero eigenvalue, points in a direction in which it is stretched by the transformation and the eigenvalue is the factor by which it is stretched. If the eigenvalue is negative, the direction is reversed. Loosely speaking, in a multidimensional vector space, the eigenvector is not rotated.

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  1. C

    Are there legal ways to quickly find eigenvalues of an operator?

    If I have an operator of the form 1+3\vec{e}\cdot\vec{\sigma} where \vec{e}\cdot\vec{e}=1. How can I find the eigenvalues quickly?
  2. pellman

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  3. E

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  4. C

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  5. S

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  6. M

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  7. W

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  8. F

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  9. Kudaros

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  10. K

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  11. K

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  12. C

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  13. I

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  14. N

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  15. C

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  16. S

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  17. W

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  18. E

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  19. E

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  20. C

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  21. A

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  22. R

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  23. P

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  24. R

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  27. V

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  28. S

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  29. F

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  30. K

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  31. N

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  32. J

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  33. E

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  34. P

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  35. W

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  36. A

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  38. D

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  39. S

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  41. F

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  42. F

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  43. G

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  44. K

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  45. G

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  46. J

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  47. G

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  48. B

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  49. S

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  50. L

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