Talk:Incidence matrix

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what will be the incidence matrix of a null graph.

[edit] Incidence Matrix Construction Missing

There is no concrete example of how to construct an Incidence Matrix. The following link provides an excellent introduction. http://mathworld.wolfram.com/IncidenceMatrix.html The incidence matrix should link back to the Fano plane.

http://math.ucr.edu/home/baez/octonions/node4.html is an excellent introduction to the Fano plane. GeMiJa 16:23, 12 June 2007 (UTC)

Isn't it a miracle there are no concrete matrices in this article? It is quite queer for me. Gubbubu (talk) 13:24, 12 July 2008 (UTC)