This is the README file for version 0.2 of the E equational theorem prover. E is free software, see the file COPYING for details about the license and the fact that THERE IS NO WARRANTY! What is E? What is CLIB? ------------------------ E is an equational theorem prover. That means it is a program that you can stuff a mathematical specification (in clausal logic with equality) and a hypothesis into, and which will then run forever, using up all of your machines resources. Very occasionally it will find a proof for the hypothesis and tell you so ;-). CLIB is a collection of library functions for building one class of interesting and cool programs. Interesting and cool programs read a specification file (or multiple files), process the input, and print a result, or they are games. Examples for cool and interesting programs are DISCOUNT (a distributed theorem prover), proof (a proof transformation tool), DOOM (a game) and xevil (also a game). The sole exception to this rule is EMACS, which is interesting and cool despite being interactive and not a game. But then there are games within EMACS... At the moment CLIB is more suited for theorem provers and similar programs, and less useful for games. This will probably change as soon as the game potential of theorem provers is recognized. CLIB is layered, with higher layers becoming more specialized. Lower levels take care of the scientifically uninteresting, but necessary services for production-quality efficient programs, e.g. error handling, memory management, parsing of input, etc. They should be useful for most programs (even for some interactive programs). Higher level modules implement shared and unshared terms, equations, clauses and related stuff. My aim in writing this library is to ease the development of E and a couple of auxiliary programst. While I try to keep new features useful for other purposes, this direction determines which features I myself will add. CLIB has been created and is currently maintained by Stephan Schulz, <schulz@informatik.tu-muecnchen.de>. Installation: ------------- To install the package, unpack the distribution with "gunzip CLIB.tgz|tar -xvf -" (or "tar -xzf CLIB.tgz" if you have GNU tar). This should create a directory named CLIB. After, unpacking, "make install" in the CLIB directory should compile and install the library and all included programs. Type "make documentation" to translate the rudimentary LaTeX documentation. For some operating systems, you may need to edit Makefile.vars to select tools and options. Go to CLIB/PROVER and type "./eprover BOO006_2.lop" to see the prover in action. Type "./eprover BOO007-2+rm_eq_rstfp.lop" if you are patient. Directory overview: ------------------- DOC: - Documentation, including a LaTeX manual for (at the moment) parts of the library. You should be looking there instead of reading this file ;-) Also has the project HISTORY file and some short notes on porting. include: - Symbolic links to all user-relevant header files lib: - Symbolic links to the individual library modules BASICS: INOUT: TERMS: ORDERINGS: CLAUSES: HEURISTICS: CONTROL: - Sources and object files for the individual library modules TEST: - Test programs for development work SIMPLE_APPS: - Small application programs for demonstration purposes as well as for solving simple tasks. PROVER: - The main program for the E prover, also contains some examples and stuff. SKELETONS: - Skeleton files for source files, make files, comment boxes,... EXAMPLES: - Example problems (unit-equality specifications) taken from the TPTP 2.1.0 library.
