In knot theory, the three-twist knot is the twist knot with three-half twists. It is listed as the 52 knot in the Alexander-Briggs notation, and is one of two knots with crossing number five, the other being the cinquefoil knot. (Wikipedia).
This step by step guide demonstrates tying 15 types: 00:36 Overhand 01:22 Square 02:36 Figure Eight 03:40 Bowline, 05:29 Running 06:19 Half, 07:45 Timber, 09:42 Rolling, 10:43 Clove Hitches 11:30 Cat's Paw 12:58 Single, 14:40 Double Sheet or Becket Bends 15:30 Fisherman's, 17:09 Doubl
From playlist How To Tutorials
The interesting sum of three angles problem!
Three squares are placed in a row. Connect the bottom left corner of each square to the top right corner of the third square, forming angles with measures a, b, c with the horizontal. What is the sum of a, b, and c? Many people requested this problem, and I thank Roberto O. and Cardist wh
From playlist Math Puzzles, Riddles And Brain Teasers
This knot is very useful for adjusting tie downs quickly and easily. For example, a tarp could be held down by a series of these knots and be made very tight so the wind cannot make it rise, and easily be removed simply by sliding the knots later. A taut line knot is also used to keep larg
From playlist Practical Projects & Skills
Link: https://www.geogebra.org/m/bd69d6u4
From playlist Geometry: Challenge Problems
How to compute a three-dimensional curl, imagined as a cross product of sorts.
From playlist Multivariable calculus
System of Equations with Three Equations and Three Variables
Please Subscribe here, thank you!!! https://goo.gl/JQ8Nys System of Equations with Three Equations and Three Variables
From playlist Systems of Equations
Untangling the beautiful math of KNOTS
Visit ► https://brilliant.org/TreforBazett/ to help you learn STEM topics for free, and the first 200 people will get 20% off an annual premium subscription. Check out my MATH MERCH line in collaboration with Beautiful Equations ►https://www.beautifulequation.com/pages/trefor Suppose yo
From playlist Cool Math Series
Unofoil with cogs: http://shpws.me/wk7u Trefoil with cogs: http://shpws.me/wk7H Cinquefoil with cogs: http://shpws.me/wk7t
From playlist 3D printing
Rima Chatterjee: Structure Theorems of Legendrian Knots in Contact Manifolds
Rima Chatterjee, University of Cologne Title: Structure Theorems of Legendrian Knots in Contact Manifolds Structure theorems of a Legendrian knot have been an interesting study in contact geometry. One can ask when topological operations on a knot gives us important information about the g
From playlist 39th Annual Geometric Topology Workshop (Online), June 6-8, 2022
Rima Chatterjee - Knots and links in overtwisted manifolds
38th Annual Geometric Topology Workshop (Online), June 15-17, 2021 Rima Chatterjee, Louisiana State University Title: Knots and links in overtwisted manifolds Abstract: Knot theory associated to overtwisted manifolds are less explored. There are two types of knots/links in an overtwisted
From playlist 38th Annual Geometric Topology Workshop (Online), June 15-17, 2021
Link: https://www.geogebra.org/m/cjS3b6Zr
From playlist Geometry: Challenge Problems
Cabling of knots in overtwisted contact manifolds - Rima Chatterjee
Joint IAS/Princeton/Montreal/Paris/Tel-Aviv Symplectic Geometry Title: Cabling of knots in overtwisted contact manifolds Speaker: Rima Chatterjee Affiliation: Cologne Date: October 8, 2021 Abstract: Knots associated to overtwisted manifolds are less explored. There are two types of kno
From playlist Mathematics
Satellite operations and Legendrian knot theory - John Etnyre
Satellite operations and Legendrian knot theory Augmentations and Legendrians at the IAS Topic: Satellite operations and Legendrian knot theory Speaker: John Etnyre Date: Thursday, February 11 Satellite operations are a common way to create interesting knot types in the smooth category. I
From playlist Mathematics
"Illustrating Geometry" exhibition: Artist's talk by Saul Schleimer: "Minimal and Seifert Surfaces"
Slides: http://homepages.warwick.ac.uk/~masgar/Talks/minimal_and_seifert_surfaces.pdf This video is also available at the Simons Center website, at http://scgp.stonybrook.edu/archives/11540 Thanks to Josh Klein for filming and editing.
From playlist 3D printing
Nicholas Cazet: Surface-link Families with Arbitrarily Large Triple Point Number
Nicholas Cazet, UC Davis Title: Surface-link Families with Arbitrarily Large Triple Point Number Analogous to a classical knot diagram, a surface-knot can be generically projected to 3-space and given crossing information to create a broken sheet diagram. A generic compact surface in 3-spa
From playlist 39th Annual Geometric Topology Workshop (Online), June 6-8, 2022
Kimihiko Motegi: L-space knots in twist families and satellite L-space knots
Abstract: Twisting a knot K in S3 along a disjoint unknot c produces a twist family of knots {Kn} indexed by the integers. Comparing the behaviors of the Seifert genus g(Kn) and the slice genus g4(Kn) under twistings, we prove that if g(Kn)−g4(Kn) [is less than] C for some constant C for i
From playlist Topology
AlgTop23: Knots and surfaces II
In the 1930's H. Siefert showed that any knot can be viewed as the boundary of an orientable surface with boundary, and gave a relatively simple procedure for explicitly constructing such `Seifert surfaces'. We show the algorithm, exhibit it for the trefoil and the square knot, and then di
From playlist Algebraic Topology: a beginner's course - N J Wildberger
Four Dimensional Maths: Things to See and Hear in the Fourth Dimension - with Matt Parker
Matt Parker, comedian and mathematician, shows how four-dimensional shapes appear in a 3D world in this hands-on talk, featuring what is possibly the world's nerdiest knitted hat! Subscribe for weekly science videos: http://bit.ly/RiSubscRibe Buy Matt's book "Things to Make and Do in the
From playlist Mathematics
Multivariable Calculus | Three equations for a line.
We present three equations that represent the same line in three dimensions: the vector equation, the parametric equations, and the symmetric equation. http://www.michael-penn.net http://www.randolphcollege.edu/mathematics/
From playlist Lines and Planes in Three Dimensions
Knot Theory and Machine Learning - Andras Juhasz
DeepMind Workshop Topic: Knot Theory and Machine Learning Speaker: Andras Juhasz Affiliation: University of Oxford Date: March 28, 2022 The signature of a knot K in the 3-sphere is a classical invariant that gives a lower bound on the genera of compact oriented surfaces in the 4-ball wi
From playlist DeepMind Workshop