几乎处处可导几乎可导基本上可导的关系

Relations among Almost everywhere Derivable Almost Derivable and Fundamental Derivable

给出了几乎可导、基本上可导概念，并证明了几乎处处可导函数类包含于几乎可导函数类包含于基本上可导函数类是真包含关系．

Almost derivable and fundamental derivable concept are given. We prove that the inclusionf:{ almost everywhere derivable funtions} { almost derivable functions } {fundamental derivalble functions } are proper.