摘要Let X be a Banach space, H a subspace of X, M an n-dimensional subspace of H and D a linear operator from H to X. R. Whitley raised the question how to calculate the following numbers:
7LIANG Jin and XIAO Tijun Department of Mathematics, University of Science and Technology of China, Hefei 230026, China.Norm continuity for t>0 of linear operator families[J].Chinese Science Bulletin,1998,43(9):719-723.
