Unknot
Автор:
Jesse Russell,Ronald Cohn, издатель:
"VSD", ISBN:
978-5-5110-9430-4
High Quality Content by WIKIPEDIA articles! The unknot arises in the mathematical theory of knots. Intuitively, the unknot is a closed loop of rope without a knot in it. A knot theorist would describe the unknot as an image of any embedding that can be def