@MISC{SETLIM_1.MIZ,
  AUTHOR = {Zhang, Bo and Yamazaki, Hiroshi and Nakamura, Yatsuka},
  TITLE = {Limit of Sequence of Subsets},
  DAY = {15},
  MONTH = {March},
  YEAR = {2005},
  ADDRESS1 = {Shinshu University, Nagano, Japan},
  ADDRESS2 = {Shinshu University, Nagano, Japan},
  ADDRESS3 = {Shinshu University, Nagano, Japan},
  SUMMARY = {A concept of "limit of sequence of subsets"
  is defined here. This article contains the following items:
  1. definition of the superior sequence and the inferior
  sequence of sets. 2. definition of the superior limit
  and the inferior limit of sets,
  and additional properties for the sigma-field of sets.
  and 3, definition of the limit value of a convergent
  sequence of sets, and additional properties for the sigma-field of sets.}}

