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Code : Tout sélectionner
\begin{tikzpicture}
\tikzstyle{fleche1}=[blue,>=latex,->]
\tikzstyle{fleche2}=[red,>=latex,->]
\node (p1) at (0,0){$u_{0}$};
\draw (0.5,0.5) node{$\scriptstyle{+r}$};
\draw (1.5,0.5) node{$\scriptstyle{+r}$};
\draw (2.5,0.5) node{$\scriptstyle{+r}$};
\draw (5.5,0.5) node{$\scriptstyle{+r}$};
\node (p2) at (1,0){$u_{1}$};
\node (p3) at (2,0){$u_{2}$};
\node (p4) at (3,0){$u_{3}$};
\node (p5) at (4,0){$\dots$};
\node (p6) at (5,0){$u_{n}$};
\node (p7) at (6,0){$u_{n+1}$};
\node (p8) at (7,0){$\dots$};
\draw[fleche1](p1.north)to [bend left](p2.north);
\draw[fleche1](p2.north)to [bend left](p3.north);
\draw[fleche1](p3.north)to [bend left](p4.north);
\draw[fleche1](p6.north)to [bend left](p7.north);
\draw[fleche2](p1.south)to [bend right](p3.south);
\draw[fleche2](p1.south)to [bend right](p4.south);
\draw (1,-0.5) node[above]{$\scriptstyle{+2r}$};
\draw (1.5,-1) node[above]{$\scriptstyle{+3r}$};
\end{tikzpicture}
Qu'en pensez-vous ?
Merci.