ITP-Course/lectures/images/hol-family.tex

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\documentclass{minimal}
\usepackage{pstricks}
\pagestyle{empty}
\begin{document}
\begin{pspicture}(0,6)(8,22)
\usefont{T1}{ppl}{m}{n}
\rput(3,20){Edinburgh LCF}
\rput(3,18){Cambridge LCF}
\rput(3,16){HOL88}
\rput(1,14){hol90}
\rput(5,13.5){ProofPower}
\rput(5,14.5){Isabelle/HOL}
\rput(3,12){HOL Light}
\rput(1,10){hol98}
\rput(5,10){HOL Zero}
\rput(1,8){HOL4}
\psline{->}(3,19.7)(3,18.3)
\psline{->}(3,17.7)(3,16.3)
\psline{->}(1,13.7)(1,10.3)
\psline{->}(1,9.7)(1,8.3)
\psline{->}(3,11.7)(1,10.3)
\psline{->}(3,11.7)(5,10.3)
\psline{->}(5,13.2)(5,10.3)
\psline{->}(3,15.7)(3,12.3)
\psline{->}(3,15.7)(1,14.3)
\psline{->}(3,15.7)(3.8,14.5)
\psline{->}(3,15.7)(3.8,13.5)
\psline{->}(1,13.7)(3,12.3)
\end{pspicture}
\end{document}