Biquandle

In mathematics, biquandles and biracks are generalizations of quandles and racks. Whereas the hinterland of quandles and racks is the theory of classical knots, that of the bi-versions, is the theory of virtual knots.

Biquandles and biracks have two binary operations on a set $X$ written $a^b$ and $a_b$ . These satisfy the following three axioms:

单词	Biquandle
释义	Biquandle 英语百科 Biquandle In mathematics, biquandles and biracks are generalizations of quandles and racks. Whereas the hinterland of quandles and racks is the theory of classical knots, that of the bi-versions, is the theory of virtual knots. Biquandles and biracks have two binary operations on a set $X$ written $a^b$ and $a_b$ . These satisfy the following three axioms:
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