There are 9 other file types using
the MM file extension!

empty icon.mm - MultiMate Advantage II text document

empty icon.mm - FreeMind mind map data

empty icon.mm - Kodak EasyShare thumbnail cache

empty icon.mm - Groff MM format source

empty icon.mm - Rise of Nations campaign media file

mm icon.mm - Apple Xcode core Objective-C program source code

empty icon.mm - NeXtMidas macro

empty icon.mm - Mathematica matrix market data

empty icon.mm - Transport Fever cache

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MM file extension - Metamath ASCII database

What is mm file? How to open mm files?

File type specification:

Various data file type icon Various data file type

The mm file extension is associated with the Metamath.

The mm file stores database in ASCII format.

Metamath is a tiny language that can express theorems in abstract mathematics, accompanied by proofs that can be verified by a computer program.

This site has a collection of web pages generated from those proofs and lets you see mathematics developed in complete detail from first principles, with absolute rigor.

This mm file type entry was marked as obsolete and no longer supported file format.

This type of file is no longer actively used and is most likely obsolete. This is typically the case for system files in old operating systems, file types from long discontinued software, or previous versions of certain file types (like documents, projects etc.) that were replaced in higher versions of their original programs.

Help how to open:

Use compatible tools to work with *.mm files.

How to convert:

Probably cannot be converted to anything else.

Related links:

Metamath Home Page

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File-Extensions.org > Various data file types

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