curve in Banach spaces;
parametrization with a Holder derivative;
direrentiability via homeomorphisms;
SPACES;
DIFFERENTIABILITY;
D O I:
10.1007/s10474-010-9094-x
中图分类号:
O1 [数学];
学科分类号:
0701 ;
070101 ;
摘要:
Let X be a Banach space and alpha a (0, 1]. We find equivalent conditions for a function f: [0,1] -> X to admit an equivalent parametrization, which is C (1,alpha) (i.e., has alpha-Holder derivative). For X = a"e, a characterization is well-known. However, even in the case X = a"e(2) several new ideas are needed.