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Professor Lanczos's book is not a textbook on advances mechanics. Its purpose is to formulate and explain these fun
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Given a conservative dynamical system of classical physics, how does one find a variational principle for it? Is there a
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The book has been mostly rewritten to bring in various improvements and additions. In particular, the local theory is re
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DT This book provides a strong mathematical grounding in the use of variational principles to analyse distributed electr
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