Friday, July 8, 2011

One more trefoil knot

Chern and Yuan-Chia made this bead model of trefoil this May. This one has a C2 rotational symmetry which is absent in the one I posted previously.

I gave this model to Prof. Wen-Yuan Qiu (Lan-Zhou University) when I was in An-Hui, He-Fei at the end of this May. He is an expert on the DNA polyhedra and gave me his book entitled "The Chemistry and Mathematics of DNA polyhedra" as a gift.

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