HOL4 の変更点

• 追加された行はこの色です。
• 削除された行はこの色です。
• HOL4 へ行く。

*HOL4 [#tb60deb7]
HOL4 is the latest version of the HOL interactive proof assistant for higher order logic: a programming environment in which theorems can be proved and proof tools implemented. Built-in decision procedures and theorem provers can automatically establish many simple theorems (users may have to prove the hard theorems themselves!) An oracle mechanism gives access to external programs such as SMT and BDD engines. HOL4 is particularly suitable as a platform for implementing combinations of deduction, execution and property checking.

HOLファミリーの本家，汎用の対話的証明系です．コンパイルには数時間掛かります．
*インストール例 [#he922c7d]
 export CAS=/usr/local/CAS
 sudo mkdir $CAS
 sudo chmod 777 $CAS
 cd $CAS
 wget --no-check-certificate https://github.com/Munksgaard/mosml/archive/master.zip
 unzip -x master
 cd ./mosml-master/src
 make world
 sudo make install
 cd $CAS
 wget http://sourceforge.net/projects/hol/files/hol/kananaskis-8/kananaskis-8.tar.gz
 tar zxvf kananaskis-8.tar.gz
 cd $CAS/hol-kananaskis-8
 mosml < tools/smart-configure.sml
 ./bin/build
 sudo ln -s $CAS/hol-kananaskis-8/bin/hol /usr/local/bin/hol4
*使用例 [#aaa58f1b]
 echo -e "g \`! n. 1 + n <= 2 EXP n\`;
 e Induct ;
 e( RW_TAC(arith_ss++ARITH_ss)[] );
 e( RW_TAC(arith_ss++ARITH_ss)[arithmeticTheory.EXP,arithmeticTheory.ADD1] );" | hol4
*リンク [#ibfe853b]
- http://hol.sourceforge.net/
- http://d.hatena.ne.jp/ehito/20130316/1363425373