Improved bounds on the crossing number of butterfly networkArticle
Authors: Paul D. Manuel 1; Bharati Rajan 2,3; Indra Rajasingh 4; P. Vasanthi Beulah 5
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Paul D. Manuel;Bharati Rajan;Indra Rajasingh;P. Vasanthi Beulah
1 Department of Information Science [Kuwait]
2 Department of Mathematics [Chennai]
3 School of Electrical Engineering and Computer Science
4 School of Advanced Sciences (SAS) [Chennai]
5 Department of Mathematics - Queen Mary's College [Chennai]
We draw the r-dimensional butterfly network with 1 / 44r+O(r2r) crossings which improves the previous estimate given by Cimikowski (1996). We also give a lower bound which matches the upper bound obtained in this paper.