Mizar System


The Mizar System is the only implementation of the Mizar Language. Originally, the Mizar system was implemented on an IBM-PC x86 compatibles under MS DOS. Now we distribute releases for MS Windows, Intel-based Linux, Darwin/Mac OS X/macOS, Solaris and FreeBSD, and also Linux on PowerPC. The whole Mizar system (including verifier) is coded in Pascal using the Free Pascal compiler.

Andrzej Trybulec (1941-2013) was the author of the Mizar Language, he was also the head of the team implementing the verifier. Current Mizar implementors:

Czeslaw Bylinski (Head)
Adam Grabowski
Artur Kornilowicz
Adam Naumowicz
Karol Pąk
Josef Urban
Past members of the Mizar implementors team:
Grzegorz Bancerek (1966-2017)
Robert Milewski

Preparing a Mizar article

The mechanics of preparing a Mizar Article is as follows:

These three steps are repeated in a loop until no errors are flagged and the author is satisfied with the resulting text. Usually, Accommodator and Verifier are called within mizf (or mizf.bat) user script. Alternatively, Josef Urban's Emacs-lisp Mizar mode (now included in all Mizar distributions) provides a fully functional interface to the Mizar System.

When finished, an article is submitted to the Library Committee of Association of Mizar Users for inclusion into the Mizar Mathematical Library. The contributed article is subject to a review and if needed the authors must revise their file. The contents of an accepted article is extracted by the Exporter utility and incorporated into the public data base distributed to all Mizar users.

To summarize, Mizar System is based on three programs named: Accommodator, Verifier, Exporter.


The Mizar Mathematical Library is distributed under the the GPL and/or the CC-BY-SA license. The distribution of the Mizar system is freely available for download for any non commercial purposes.

NOTE: Almost all material contained in the Mizar distribution is copyrighted by the Association of Mizar Users (SUM). The source code of the Mizar verifier and accompanying tools is available to the members of SUM.


Latest official (stable) Mizar releases (version 8.1.11, MML 5.57.1412) for Win32, Linux (i386), Darwin/Mac OS X/macOS (i386)

Download via HTTP, Download via FTP

More releases

Win32 releases: HTTP, FTP
Linux (i386) releases: HTTP, FTP
Darwin/Mac OS X (i386) releases: HTTP, FTP
Solaris (i386) releases: HTTP, FTP
FreeBSD (i386) releases: HTTP, FTP
Darwin/Mac OS X (PPC) releases: HTTP, FTP
Linux (PPC) releases: HTTP, FTP
Linux (ARM) releases: HTTP, FTP

The file readme.txt contains instructions for installing Mizar on Windows platforms. Similarly, there are files README for Linux (i386), README for Darwin (i386), README for Solaris (i386), README for FreeBSD (i386), README for Darwin (PPC), README for Linux (PPC), and README for Linux (ARM).
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Last modified: March 2, 2022