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The Aleksandrov problem and the Tingley problem for expansive and nonexpansive operators in p-normed spaces
In this paper several positive answers are given to the Aleksandrov type problems and the Tingley type problems for some expansive and nonexpansive operators between a real pnormed space and a real q -normed space (0 < p,q 1) .On the basis of the characteristics of p -normed spaces, the …