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Some refinements of asymptotic stability theory |
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| Authors: | John R Haddock |
| Abstract: | Summary The concept of a Liapunov function with strongly negative definite derivative on an annulus is introduced. Sufficient conditions for stability and asymptotic stability are given without using any “definiteness” properties of Liapunov functions. Entrata in Redazione il 23 novembre 1970. |
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