科研之友
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摘要
Let X and Y be normed spaces over a complete field F with dual spaces X' and Y' respectively. Under certain hypotheses, for given x is an element of X, y is an element of Y and a mapping u from X' x Y' to F, we apply Hyers-Ulam approach to find a unique bounded bilinear mapping v near to u such that parallel to v parallel to = parallel to x circle times y parallel to.
- 出版日期2015
