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<P ALIGN=RIGHT><FONT SIZE=1>Xy-pic User's Guide</FONT> <A HREF="18pt.html"><IMG SRC="./quest.gif" ALIGN=TOP HEIGHT=27 WIDTH=21 BORDER=0 ALT="?"></A><A NAME="arrowspass" NAME="tex2html279" HREF="node17.html"><IMG WIDTH=27 HEIGHT=27 BORDER=0 ALIGN=ABSMIDDLE ALT="previous" SRC="./previous.gif"></A><A NAME="tex2html283" HREF="node17.html"><IMG WIDTH=27 HEIGHT=27 BORDER=0 ALIGN=ABSMIDDLE ALT="previous" SRC="./previoussection.gif"></A><A NAME="tex2html285" HREF="node11.html"><IMG WIDTH=27 HEIGHT=27 BORDER=0 ALIGN=ABSMIDDLE ALT="up" SRC="./up.gif"></A><A NAME="tex2html281" HREF="node19.html"><IMG WIDTH=27 HEIGHT=27 BORDER=0 ALIGN=ABSMIDDLE ALT="next" SRC="./nextsection.gif"></A><A NAME="tex2html287" HREF="node19.html"><IMG WIDTH=27 HEIGHT=27 BORDER=0 ALIGN=ABSMIDDLE ALT="next" SRC="./next.gif"></A></P><H2><A NAME="SECTION00047000000000000000">2.7 Arrows passing under</A></H2> Arrows can pass under (or via) any other
entry: Just insert <code>'</code><I>t</I>, <I>i.e.</I>, a quote (apostrophe) character
followed by a target, for each entry that should be visited except
the last, "ordinary & final" entry:
<BLOCKQUOTE><PRE>\xymatrix{
{\circ}
\ar@{|-->} '[dr] ^a
'[rr]+D*{\bullet} ^b
[drrr] ^c
& {\circ} & {\circ} & {\circ} \\
{\circ} & {\circ} & {\circ} & {\circ} }</PRE></BLOCKQUOTE>
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typesets
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As you see, labels are set separately on each segment.
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<A NAME="Exercise12"> </A><H4><A NAME="SECTION00047010000000000000">Exercise 12.</A></H4> Typeset the "lambda cube"
<P><CENTER><BR><IMG WIDTH=239 HEIGHT=159 ALIGN=BOTTOM ALT="displaymath812" SRC="img53.gif"><BR></CENTER><P>
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<em>Hint</em>: "going under" an empty entry leaves a small gap at
that location. The compactness is achieved using
a trick described in section <A HREF="node24.html#entriesresizing">3.3</A>.
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<A HREF="node33.html#Answer12">Answer.</A>
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<P> <P ALIGN=RIGHT><FONT SIZE=1>Xy-pic User's Guide</FONT> <A HREF="18pt.html"><IMG SRC="./quest.gif" ALIGN=TOP HEIGHT=27 WIDTH=21 BORDER=0 ALT="?"></A><A NAME="tex2html279" HREF="node17.html"><IMG WIDTH=27 HEIGHT=27 BORDER=0 ALIGN=ABSMIDDLE ALT="previous" SRC="./previous.gif"></A><A NAME="tex2html283" HREF="node17.html"><IMG WIDTH=27 HEIGHT=27 BORDER=0 ALIGN=ABSMIDDLE ALT="previous" SRC="./previoussection.gif"></A><A NAME="tex2html285" HREF="node11.html"><IMG WIDTH=27 HEIGHT=27 BORDER=0 ALIGN=ABSMIDDLE ALT="up" SRC="./up.gif"></A><A NAME="tex2html281" HREF="node19.html"><IMG WIDTH=27 HEIGHT=27 BORDER=0 ALIGN=ABSMIDDLE ALT="next" SRC="./nextsection.gif"></A><A NAME="tex2html287" HREF="node19.html"><IMG WIDTH=27 HEIGHT=27 BORDER=0 ALIGN=ABSMIDDLE ALT="next" SRC="./next.gif"></A><P><ADDRESS>
<BR><HR>
<a href="COPYING/index.html">�/a> <a href="http://www.brics.dk/~krisrose/">Kristoffer H. Rose</a>
<<a href="mailto:krisrose@brics.dk">krisrose@brics.dk</a>>
January 6, 1997
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