在实赋范线性空间中,给出了ε-近似保平方等腰正交映射的定义,得到了ε-近似保平方等腰正交线性映射的一些充分条件,在映射有界的条件下,给出了ε-近似保平方等腰正交线性映射的刻画,最后得到了ε-近似保平方等腰正交线性映射的扰动定理。
Firstly, In real normed linear spaces, the definition of e-approximate square isosceles-orthogonality preser- ving mapping is given. Some sufficient conditions for a linear mapping to be an ε--approximate square isosceles-orthogo- nality preserving mapping are given. Secondly, when the mapping is bounded, the characterization of ε--approximate square isosceles-orthogonality preserving linear mapping is obtained. Finally, the perturbations of ε--approximate square isosceles-orthogonality preserving linear mapping are given.