“eigenfunction expansion”的概念、定义、翻译、参考文献-科学参考

单词	eigenfunction expansion
释义	eigenfunction expansion [`ī·gǝn´fǝŋk·shǝn ik`span·chǝn] ^MATHEMATICS By using spectral theory for linear operators defined on spaces composed of functions, in certain cases the operator equals an integral or series involving its eigenvectors; this is known as its eigenfunction expansion and is particularly useful in studying linear partial differential equations.
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