figure-eight knot

unique knot with a crossing number of four

en-GB/ˈfɪɡə - ˈeɪt ˈnɒt/
en-US/ˈfɪɡjɚ - ˈeɪt ˈnɑt/

دسته بندی ها:

prime knotfibered knotalternating knottwist knot