Journal of Formalized Mathematics
Volume 5, 1993
University of Bialystok
Copyright (c) 1993 Association of Mizar Users

## Hahn-Banach Theorem

Bogdan Nowak
Lodz University
Andrzej Trybulec
Warsaw University, Bialystok

### Summary.

We prove a version of Hahn-Banach Theorem.

#### MML Identifier: HAHNBAN

The terminology and notation used in this paper have been introduced in the following articles [13] [6] [19] [1] [7] [9] [20] [3] [4] [17] [16] [15] [10] [5] [11] [8] [18] [14] [12] [2]

#### Contents (PDF format)

1. Preliminaries
2. Sets Linearly Ordered by the Inclusion
3. Subspaces of a Real Linear Space
4. Functionals
5. Hahn-Banach Theorem

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