Journal of Formalized Mathematics
Volume 1, 1989
University of Bialystok
Copyright (c) 1989 Association of Mizar Users

## Families of Sets

Warsaw University, Bialystok
Supported by RPBP.III-24.C1.

### Summary.

The article contains definitions of the following concepts: family of sets, family of subsets of a set, the intersection of a family of sets. Functors \$\cup\$, \$\cap\$, and \$\setminus\$ are redefined for families of subsets of a set. Some properties of these notions are presented.

#### MML Identifier: SETFAM_1

The terminology and notation used in this paper have been introduced in the following articles [2] [1] [3]

Contents (PDF format)

#### Bibliography

[1] Czeslaw Bylinski. Some basic properties of sets. Journal of Formalized Mathematics, 1, 1989.
[2] Andrzej Trybulec. Tarski Grothendieck set theory. Journal of Formalized Mathematics, Axiomatics, 1989.
[3] Zinaida Trybulec. Properties of subsets. Journal of Formalized Mathematics, 1, 1989.