View source for Endless knot symbol

Depictions of the "Endless Knot" symbol of Asian cultures (in some versions this is a symbol of Buddhism).  In the series below, the knots have a number of crossings which is always the square of an odd number (but two of these crossings are not structurally significant).

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Image:SusanWilliamsMedallion_160.jpg|Simplest form with 9 crossings, 7 of which are structurally significant (i.e. a [[7_4]] knot).  Photograph of Susan Williams' medallion [http://www.math.toronto.edu/~drorbn/Gallery/KnottedObjects/SusanWilliamsMedallion.html]. 
Image:Endless knot outlined.png|Abstract geometric version of preceding.
Image:Endless-knot-Shrivatsa.jpg|Ornamental version
Image:Endless_knot_23_crossings_25.png|Form with 25 crossings, 23 of which are structurally significant.
Image:Endless knot Red lacquerware dish Ming Dynasty.jpg|Form with 49 crossings, 47 of which are structurally significant.  Photograph of ca. 400 year old Chinese lacquerware dish.
Image:Endless-knot-49-crossings.png|Abstract geometric version of preceding.
Image:Endless-knot-81-crossings.png|Form with 81 crossings 79 of which are structurally significant.
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