News FocusGEOMETRY AND THE IMAGINATION

That's Not Some Knot Sum!

Science  06 Jul 2007:
Vol. 317, Issue 5834, pp. 39
DOI: 10.1126/science.317.5834.39b

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Summary

PRINCETON, NEW JERSEY--At a meeting held here on 7-11 June in honor of the mathematician William Thurston, a knot theorist said he had taken a step toward determining whether the "crossing number"--the total number of times a knotted loop crosses itself--stays the same when two such loops are grafted together.

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