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On the positive definiteness of a class of operators |
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| Authors: | Wu Ji-ke Yuan Yong |
| Affiliation: | Department of Mechanics, Peking University, Beijing |
| Abstract: | In this paper, a proof of the positive definiteness for a class of operators is given. The operators considered are general enough to include those in two- and three-dimensional elasticity, thin plates and shells as their special cases. |
| Keywords: | elasticity generalized variational principle equivalent theorem scale transformation invariance |
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