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A 3-dimensional rendering of the ribbon knot , showing the ribbon property. In the mathematical area of knot theory, a ribbon knot is a knot that bounds a self-intersecting disk with only ribbon singularities. Intuitively, this kind of singularity can be formed by cutting a slit in the disk and passing another part of the disk through the slit.
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Rhythmic gymnastics routines require the ribbon to constantly be in motion and create defined shapes. [3] The ribbon is generally held by the handle with the thumb and pointer finger extended. [5] Because of the ribbon's length, the gymnast can easily become tangled in it or cause knots to form; juniors and beginner gymnasts may use shorter ...
The reef knot can capsize if one of its standing ends is pulled.. A knot that has capsized or spilled has deformed into a different structure. Although capsizing is sometimes the result of incorrect tying or misuse, it can also be done purposefully in certain cases to strengthen the knot (see the carrick bend [4]) or to untie a seized knot which would otherwise be difficult to release (see ...
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The discovery of all possible ways to tie a tie depends on a mathematical formulation of the act of tying a tie. In their papers (which are technical) and book (which is for a lay audience, apart from an appendix), the authors show that necktie knots are equivalent to persistent random walks on a triangular lattice, with some constraints on how the walks begin and end.
The knot provides a compact, streamlined and decorative way of joining two ropes. However its primary attribute is that it is resistant against working loose when subject to intermittent loads. [1] The security of the knot arises from the fact that at step 3 in the tying sequence the knot is a Double Harness Bend (ABoK #1420). The additional ...
A striped bow tie. The bow tie or dicky bow [1] / b oʊ / is a type of necktie. A modern bow tie is tied using a common shoelace knot, which is also called the bow knot for that reason. It consists of a ribbon of fabric tied around the collar of a shirt in a symmetrical manner so that the two opposite ends form loops.