What is the minimal number of edges for a polygonal knot to be nontrivial?

33 Views Asked by At

I started learning about knots from Manturov's monograph. Exercise 2.1 says "Show that all polygonal links with less than six edges are trivial". I kind of convince myself why this should hold. Then Exercise 2.2 says "Draw a polygonal trefoil knot with six edges". I start drawing and draw it with five edges. Am I missing something or there was a typo?