◎◎◎ loop ⪢⪢
http://qindex.info/i.php?x=22939
○○○ winding ⪢⪢
loop
http://qindex.info/i.php?x=20066
○○○ classify ⪢⪢
Another way topologists classify things are in terms of the number of distinct loops you can draw around the surface of a shape.
http://qindex.info/i.php?x=5172
○○○ loop ⪢⪢
http://qindex.info/i.php?x=22940
 sequences, selections and loops
http://qindex.info/i.php?x=15382
◌◌◌ loop
#math
http://qindex.info/i.php?x=16024
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