I have drawn the following diagram:

enter image description here

using the following command:



  A\ar[rrrr]\ar[rrdd] && && B\ar[lldd] \\
  && C &&

But this diagram is not smooth, especially the arrow AC and BC. How can I make it smooth?

  • 2
    I have a smooth lines compiling your document. How do you compile and what viewer you use? – m0nhawk Apr 27 '13 at 14:27
  • It's important to know what TeX system you're using and how you get final output; is it pdflatex or latex+dvips+ps2pdf? In any case, you seem to have an outdated TeX distribution. – egreg Apr 27 '13 at 14:32
  • I have compiled it through 'pdflatex' with 'kile'. I am using 'Document viewer' to view PDF file. – Md Kutubuddin Sardar Apr 27 '13 at 14:37
  • 1
    @MdKutubuddinSardar You probably suffer from having the very outdated TeX Live 2009 provided by Ubuntu. Try updating to TeX Live 2012. – egreg Apr 27 '13 at 15:35

The diagram is fine. I've compiled your code on MacTeX 2012 with pdflatex:

enter image description here

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