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    • On the minimum number of colors for knots. 

      Kauffman, Louis H.; Lopes, Pedro (Elsevier, 2008-01)
      In this article we take up the calculation of the minimum number of colors needed to produce a non-trivial coloring of a knot. This is a knot invariant and we use the torus knots of type (2, n) as our case study. We ...