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A Property of N-Graphs

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2 Author(s)

T. A. J. Nicholson has introduced a restricted class of drawn graphs (N-graphs) into the problem of drawing a graph with a minimum number of crosspoints. This short note shows some defects in representing the capability of N-graphs by presenting a planar graph which cannot be represented by any N-graphs.

Published in:

Computers, IEEE Transactions on  (Volume:C-20 ,  Issue: 1 )