Meander (mathematics)
（重定向自Meandric number）
![Meandric permutation (1 8 5 4 3 6 7 2)](/Images/godic/202501/26/Meanderperm.svg4238.png")
In mathematics, a meander or closed meander is a self-avoiding closed curve which intersects a line a number of times. Intuitively, a meander can be viewed as a road crossing a river through a number of bridges.