Article ID: | iaor20013584 |
Country: | Germany |
Volume: | 88 |
Issue: | 2 |
Start Page Number: | 223 |
End Page Number: | 253 |
Publication Date: | Jan 2000 |
Journal: | Mathematical Programming |
Authors: | Li W., Bartelt M. |
In this paper, we introduce the exact order of Hoffman's error bounds for approximate solutions of elliptic quadratic inequalities. Elliptic quadratic inequalities are closely related to Chebyshev approximation of vector-valued functions (including complex-valued functions). The set of Chebyshev approximations of a vector-valued function defined on a finite set is shown to be Hausdorff strongly unique of order exactly 2