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paperback. Condición: New. Language:Chinese.Pages Number: 84 Publisher: Science Press Pub. Date :2009-04. This book presentation and discussion a normed. quasi-Fu Fu Fan and Fan space and to be on the basic concepts of linear operators. the so-called linear functional of the three principles that: Hahn-Banach theorem. open mapping theorem and the image resonates with the closing Theorem ( uniform boundedness principle). Hilbert space. the basic content of the famous can be divided into space (changed range) is equivale.