| 11. | Then we expect the new eigenvalues and eigenvectors to be similar to the original, plus small perturbations:
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| 12. | In turn, they argue that small perturbations in the food supply are highly amplified for malnourished populations.
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| 13. | Now, in dual way with respect to the small perturbations, we have to solve the Schr�dinger equation
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| 14. | A small perturbation can have far-reaching results.
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| 15. | There are cases where robustness is sought against small perturbations in a nominal value of a parameter.
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| 16. | And the velocity field is modified by adding to V0 ( x, t ) a small perturbation.
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| 17. | The result of positive feedback is to augment changes, so that small perturbations may result in big changes.
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| 18. | Thus, for small eigenvalues, even small perturbations in the data can lead to considerable changes in the solution.
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| 19. | :Stability means decay of small perturbations.
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| 20. | A small perturbation is enough to let the World economy crash, because the economy has been mismanaged anyway.
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