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Knot Theory

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Pt314
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Joined: 12/31/1969

Lately I have been studying knot theory, I find it interesting. (I have also been studying Differential Equations, I am studing for the next semester as a math major.)

Anyway I have come up with my own knot invarient polynomial. It works really well in recognizing unknots (most of the time). However I have found a bothersome symmetry in how it shouldn't matter where your starting point and direction are. Because of this I have found that it isn't able to distingush between right-handed tri-foil knots & left-handed tri-foil knots, since with my equation, starting on the inside of a right-handed knot instead of the outside, or traveling in the oppisite direction from the starting, gives the same equation as if I 'mirror' the knot by flipping all of the crossovers with cross unders.

Does anybody here know anything about how to distingush right-handed knots and left-handed knots, using properties that do not change no matter how tangled up the knot is?

OrlandoPat
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Joined: 10/16/2008
Heh.

I do Knot. 8)

...sorry - someone had to say it....

nickdanger
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Joined: 12/31/1969
Re: Knot Theory

Pt314 wrote:
Does anybody here know anything about how to distingush right-handed knots and left-handed knots, using properties that do not change no matter how tangled up the knot is?

Frayed knot.

[I hate myself]

Zzzzz
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Joined: 06/20/2008
Knot Theory

Wow.. I am a bit rusty but I think yor are looking for information about plane isotopy and something called Reidemeister moves.

This site seems to have some good info, knot sure if it will help, but you can be the judge of that.

http://www.math.lsu.edu/~nelson/vknots.html

Basically I would look into how to use the plane isotopies to manipulate your knot invarient polynomial. But as I said I am a little rusty, so I might be way off...

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