Journal of Formalized Mathematics
Volume 2, 1990
University of Bialystok
Copyright (c) 1990 Association of Mizar Users

The Lattice of Real Numbers. The Lattice of Real Functions


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

Summary.

A proof of the fact, that $\llangle {\Bbb R}, {\rm max}, {\rm min} \rrangle$ is a lattice (real lattice). Some basic properties (real lattice is distributive and modular) of it are proved. The same is done for the set ${\Bbb R}^A$ with operations: max($f(A)$) and min($f(A)$), where ${\Bbb R}^A$ means the set of all functions from $A$ (being non-empty set) to $\Bbb R$, $f$ is just such a function.

MML Identifier: REAL_LAT

The terminology and notation used in this paper have been introduced in the following articles [7] [5] [6] [9] [1] [3] [8] [2] [4]

Contents (PDF format)

Bibliography

[1] Czeslaw Bylinski. Binary operations. Journal of Formalized Mathematics, 1, 1989.
[2] Czeslaw Bylinski. Functions from a set to a set. Journal of Formalized Mathematics, 1, 1989.
[3] Henryk Oryszczyszyn and Krzysztof Prazmowski. Real functions spaces. Journal of Formalized Mathematics, 2, 1990.
[4] Andrzej Trybulec. Function domains and Fr\aenkel operator. Journal of Formalized Mathematics, 2, 1990.
[5] Andrzej Trybulec. Subsets of real numbers. Journal of Formalized Mathematics, Addenda, 2003.
[6] Andrzej Trybulec and Czeslaw Bylinski. Some properties of real numbers operations: min, max, square, and square root. Journal of Formalized Mathematics, 1, 1989.
[7] Zinaida Trybulec. Properties of subsets. Journal of Formalized Mathematics, 1, 1989.
[8] Edmund Woronowicz. Relations and their basic properties. Journal of Formalized Mathematics, 1, 1989.
[9] Stanislaw Zukowski. Introduction to lattice theory. Journal of Formalized Mathematics, 1, 1989.

Received May 22, 1990


[ Download a postscript version, MML identifier index, Mizar home page]