BIB-VERSION:: CS-TR-v2.0 ID:: STAN//CS-TR-71-192 ENTRY:: November 01, 1995 ORGANIZATION:: Stanford University, Department of Computer Science TITLE:: An n log n algorithm for isomorphism of planar triply connected graphs TYPE:: Technical Report AUTHOR:: Hopcroft, John E. DATE:: January 1971 PAGES:: 10 ABSTRACT:: It is shown that the isomorphism problem for triply connected planar graphs can be reduced to the problem of minimizing states in a finite automaton. By making use of an n log n algorithm for minimizing the number of states in a finite automaton, an algorithm for determining whether two planar triply connected graphs are isomorphic is developed. The asymptotic growth rate of the algorithm grows as n log n where n is the number of vertices in the graph. NOTES:: [Adminitrivia V1/Prg/19951101] END:: STAN//CS-TR-71-192