数学物理学报(英文版) ›› 1996, Vol. 16 ›› Issue (S1): 92-99.
罗祖华
Luo Zuhua
摘要: In this paper, we discuss the nonlinear approximation of a variation of L1 under the local Haar condition. Theorems on characterizations (including alternations), unicity and strong unicity of the nonlinear approximation are obtained, the associated linear problem equivalent to the nonlinear approximation are given.