<ipe version="60023" creator="Ipe 6.0 preview 23" media="0 0 595 842">
<info created="D:20041031011942" modified="D:20050222000427" bbox="cropbox"/>
<preamble>\usepackage{amsmath}</preamble>
<page gridsize="4">
<layer name="alpha"/>
<view layers="alpha" active="alpha"/>
<text layer="alpha" stroke="black" matrix="1 0 0 1 -9.289 295.849" pos="16 528" type="label" width="10.578" height="6.812" depth="1.49" valign="bottom" size="normal">$S_1$</text>
<path stroke="black" matrix="1 0 0 1 -36 12" pen="normal">
40 808 m
56 808 l
56 824 l
40 824 l
h
</path>
<path stroke="black" matrix="1 0 0 1 0 -4" pen="normal" arrow="normal">
12 824 m
12 756 l
</path>
<path stroke="black" matrix="1 0 0 1 -1.95475 -4.32579" pen="normal" arrow="normal">
16 824 m
52 756 l
</path>
<path stroke="black" matrix="1 0 0 1 0 -4" pen="normal" arrow="normal">
20 824 m
88 756 l
</path>
<group matrix="1 0 0 1 0 -4.97738">
<text stroke="black" matrix="1 0 0 1 -140.128 -4" pos="148 736" type="label" width="16.288" height="6.812" depth="1.49" valign="bottom" size="normal">$M_F$</text>
<text stroke="black" matrix="1 0 0 1 -130.496 88" pos="136 656" type="label" width="21.025" height="6.812" depth="1.49" valign="bottom" size="normal">$I_1$: a</text>
<text stroke="black" matrix="1 0 0 1 -104.144 -4" pos="148 736" type="label" width="16.288" height="6.812" depth="1.49" valign="bottom" size="normal">$M_F$</text>
<text stroke="black" matrix="1 0 0 1 -94.7895 88" pos="136 656" type="label" width="21.579" height="6.923" depth="1.49" valign="bottom" size="normal">$I_2$: b</text>
<text stroke="black" matrix="1 0 0 1 -67.7804 -4" pos="148 736" type="label" width="16.288" height="6.812" depth="1.49" valign="bottom" size="normal">$M_F$</text>
<text stroke="black" matrix="1 0 0 1 -62.5769 88" pos="136 656" type="label" width="29.881" height="6.923" depth="1.49" valign="bottom" size="normal">$I_3$: a b</text>
<path stroke="black" matrix="0.8 0 0 1 -12.784 20" pen="normal">
16 708 m
56 708 l
56 736 l
16 736 l
h
</path>
<path stroke="black" matrix="0.792381 0 0 1 -17.7295 20" pen="normal">
68 708 m
108 708 l
108 736 l
68 736 l
h
</path>
<path stroke="black" matrix="0.818182 0 0 1 -26.1818 20" pen="normal">
120 708 m
160 708 l
160 736 l
120 736 l
h
</path>
</group>
</page>
</ipe>
