fixed conception
1.Abstract: This paper, in terms of conception, logic and form, deeply and systematically analyses and researchs some important problems in the expression of error and uncertainty of measurement, and reterates the definition of error, result and uncertainty of measurement, coverage uncertainty may be used instead of expanded uncertainty, as well the opinion of fixed quality of error and fixed quantity of uncertainty of measurement, which the author once put.
2.We introduce the conception of Tcontrollable distribution functions for the first time showing the set of T controllable distribdtion functions in clos relationship with the existence of fixed points of conrtaction maps on the menger spaces(S,F,τT),therefore, suppling a new method for the study of the contration properties of the spaces.
