X-Git-Url: https://bilbo.iut-bm.univ-fcomte.fr/and/gitweb/rairo15.git/blobdiff_plain/586298b57c6e1cec5566bbe692ac21c4c701fd51..46923e2a8ce7f8ad2258360cba2127f7f1b79155:/preliminaries.tex?ds=inline diff --git a/preliminaries.tex b/preliminaries.tex index 6d837a1..f90fdae 100644 --- a/preliminaries.tex +++ b/preliminaries.tex @@ -1,14 +1,11 @@ - - - In what follows, we consider the Boolean algebra on the set $\Bool=\{0,1\}$ with the classical operators of conjunction '.', of disjunction '+', of negation '$\overline{~}$', and of disjunctive union $\oplus$. Let $n$ be a positive integer. A {\emph{Boolean map} $f$ is -a function from the Boolean domain - to itself +a function from $\Bool^n$ +to itself such that $x=(x_1,\dots,x_n)$ maps to $f(x)=(f_1(x),\dots,f_n(x))$. Functions are iterated as follows. @@ -41,13 +38,15 @@ $f^*: \Bool^3 \rightarrow \Bool^3$ be defined by $f^*(x_1,x_2,x_3) = (x_2 \oplus x_3, \overline{x_1}\overline{x_3} + x_1\overline{x_2}, \overline{x_1}\overline{x_3} + x_1x_2)$ + + The iteration graph $\Gamma(f^*)$ of this function is given in Figure~\ref{fig:iteration:f*}. \vspace{-1em} \begin{figure}[ht] \begin{center} -\includegraphics[scale=0.5]{images/iter_f0b} +\includegraphics[scale=0.5]{images/iter_f0c.eps} \end{center} \vspace{-0.5em} \caption{Iteration Graph $\Gamma(f^*)$ of the function $f^*$}\label{fig:iteration:f*}