Finding Minimum Spanning Trees in O(m alpha(m,n)) Time

  • Authors:
  • Seth Pettie

  • Affiliations:
  • -

  • Venue:
  • Finding Minimum Spanning Trees in O(m alpha(m,n)) Time
  • Year:
  • 1999

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Abstract

We describe a deterministic minimum spanning tree algorithm running in time O(m alpha(m,n)), where alpha is a natural inverse of Ackermann''s function and m and n are the number of edges and vertices, respectively. This improves upon the O(m alpha(m,n) log alpha(m,n)) bound established by Chazelle in 1997. A similar O(m alpha(m,n))-time algorithm was discovered independently by Chazelle, predating the algorithm presented here by many months. This paper may still be of interest for its alternative exposition.