= Biracks and biquandles
{wiki=Biracks_and_biquandles}
Biracks and biquandles are algebraic structures used in the study of knots and 3-manifolds, particularly in the field of knot theory and topological quantum field theories. They provide a framework for understanding symmetries of knots and links through combinatorial methods. \#\#\# Birack A **birack** is a set \\( X \\) equipped with two binary operations \\( \\blacktriangledown \\) and \\( \\blacktriangleleft \\) that satisfy certain axioms.
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