Upon a variational principle
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LL.G. Chambers
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Article
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1993
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Elsevier Science
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English
β 76 KB
A system under the action of an external influence characterised by some function f acquires an excitation u, u and f being related by Au = f where A is a positive definite symmetrical operator. A new method is discussed for obtaining a lower bound for the "energy" of the system, (f, u).