Endless Knot
The Endless Knot
The Endless Knot is a symbolic knot used in Tibetan Buddhism. The Endless Knot is also known as dpal be'u in Tibetan or shrivatsa in Sanskrit. Other names include the Mystic Dragon, the Knot of Eternity, and the Lucky Diagram.
The Endless Knot is an intertwined knot without beginning or end, symbolizing the Buddha's wisdom, infinite compassion and wisdom. It's one of the 8 auspicious Buddhist symbols, known in as Sanskrit as Ashtamangala. The other 7 symbols are a lotus flower, two golden fish, a parasol, a treasure vase, a conch shell, victory banner, and eight spoked wheel.
The Endless Knot can be described mathmatically as 74, The Alternating Knot 74. Rob Scharein in Vancouver has a cool interactive plot of this knot online that you can play with (click and drag).
This site has a good overview reference about the Endless Knot, as does this site too.