Knots and links (source code)

= Knots and links
{wiki=Category:Knots_and_links}

Knots and links are concepts from the field of topology, a branch of mathematics that studies the properties of space that are preserved under continuous transformations. \#\#\# Knots: A **knot** is essentially a closed loop in three-dimensional space that does not intersect itself. To understand knots, imagine taking a piece of string, tying it into a loop, and then slicing through space without cutting the string apart.