Knot Theory
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http://knotplot.com/knottheory/  


Robert Scharein  
A branch of algebraic topology where one studies what is known as the placement problem, or the embedding of one topological space into another. The simplest form of knot theory involves the embedding of the unit circle into threedimensional space. For the purposes of this document a knot is defined to be a closed piecewise linear curve in threedimensional Euclidean space R^3. Two or more knots together are called a link. Thus a mathematical knot is somewhat different from the usual idea of a knot, that is, a piece of string with free ends. The knots studied in knot theory are (almost) always considered to be closed loops. Part of the KnotPlot site.  


Levels:  High School (912), College, Research 
Languages:  English 
Math Topics:  Knot Theory 
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