Journal of Formalized Mathematics
Volume 8, 1996
University of Bialystok
Copyright (c) 1996 Association of Mizar Users

## Boolean Posets, Posets under Inclusion and Products of Relational Structures

Warsaw University, Bialystok
Robert Milewski
Warsaw University, Bialystok

### Summary.

In the paper some notions useful in formalization of [11] are introduced, e.g. the definition of the poset of subsets of a set with inclusion as an ordering relation. Using the theory of many sorted sets authors formulate the definition of product of relational structures.

This work was partially supported by Office of Naval Research Grant N00014-95-1-1336.

#### MML Identifier: YELLOW_1

The terminology and notation used in this paper have been introduced in the following articles [17] [9] [20] [21] [23] [22] [15] [5] [6] [10] [1] [8] [7] [19] [24] [12] [3] [16] [14] [18] [2] [13] [4]

#### Contents (PDF format)

1. Boolean Posets and Posets under Inclusion
2. Products of Relational Structures

#### Acknowledgments

The authors would like to express their gratitude to Professor Andrzej Trybulec for his help in formulating mizared definition of the product.

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