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Szekeres · source-snapshot-bc3404156f6e
已登记出处中的最早位置:§13.6 · zh-CN。
来源短摘录与定位
§13.6 · zh-CN · translation · unreviewed
对于每个复数,定义 为预解算符(resolvent operator)的定义域
§13.6 · en · original_transcription · unreviewed
As for bounded operators, a complex number is said to be a regular value for if . The resolvent operator can then be shown to be a bounded (continuous) operator. The set of complex numbers that are not regular are again known as the spectrum of .