drawing in latex simple [duplicate]

I have a presentation. I want to draw it in latex and put in on my slide. Some kind tell me where to begin or tell me the code

marked as duplicate by hpekristiansen, Stefan Pinnow, marmot tikz-pgf StackExchange.ready(function() { if (StackExchange.options.isMobile) return; $('.dupe-hammer-message-hover:not(.hover-bound)').each(function() { var$hover = $(this).addClass('hover-bound'),$msg = $hover.siblings('.dupe-hammer-message');$hover.hover( function() { $hover.showInfoMessage('', { messageElement:$msg.clone().show(), transient: false, position: { my: 'bottom left', at: 'top center', offsetTop: -7 }, dismissable: false, relativeToBody: true }); }, function() { StackExchange.helpers.removeMessages(); } ); }); }); May 29 '18 at 6:21

\documentclass[tikz]{standalone}
\usetikzlibrary{shapes}
\begin{document}
\begin{tikzpicture}

\node[draw,circle,minimum size=7cm] (c1) at (0,0) {};

\node[draw,ellipse, minimum height=4cm,minimum width=2cm] (e1) at (0,1) {};
\node[draw,ellipse, minimum height=2cm,minimum width=4cm] (e2) at (1,1) {};

\node[text width=3cm] (l1) at (6,6) {Topological `reunion'?};
\node[text width=3cm] (l2) at (7,1) {AECH};
\node[text width=3cm] (l3) at (0.5,-3) {Matrix module};

\draw[->] (c1) -- (l1);
\draw[->] (e2) -- (l2);
\draw[->] (e1) -- (l3);

\end{tikzpicture}
\end{document}

Familiarise yourself with the various ways you can customize the positions, sizes, shape colours, arrows etc... to achieve what you want. Don't be afraid to search other answers on this site and just try things.

• Thanks. I could draw the circle, ellipse separately but not be lying inside the circle. I understand the trick. – GGT May 29 '18 at 6:08