Integral representation of Tchebycheff systems. (English) Zbl 0377.41022
MSC:
41A50 | Best approximation, Chebyshev systems |
26A51 | Convexity of real functions in one variable, generalizations |
41A50 | Best approximation, Chebyshev systems |
26A51 | Convexity of real functions in one variable, generalizations |