"Knot theory"의 두 판 사이의 차이

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65번째 줄: 65번째 줄:
 
* using the Boltzmann weights from the various exactly solvable models, we can discover an infinite series of invariants of knots
 
* using the Boltzmann weights from the various exactly solvable models, we can discover an infinite series of invariants of knots
 
* so the problem is to find a nice set of Boltzmann weights which give non-trivial invariants
 
* so the problem is to find a nice set of Boltzmann weights which give non-trivial invariants
 
 
 
  
 
 
 
 
117번째 줄: 115번째 줄:
 
<h5>question and answers(Math Overflow)</h5>
 
<h5>question and answers(Math Overflow)</h5>
  
* http://mathoverflow.net/search?q=
+
* http://mathoverflow.net/search?q=knot+quantum
 
* http://mathoverflow.net/search?q=
 
* http://mathoverflow.net/search?q=
 
* http://mathoverflow.net/search?q=
 
* http://mathoverflow.net/search?q=
127번째 줄: 125번째 줄:
 
<h5>blogs</h5>
 
<h5>blogs</h5>
  
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*   <br> Unknotting knot theory<br>
 
*  구글 블로그 검색<br>
 
*  구글 블로그 검색<br>
 
** http://blogsearch.google.com/blogsearch?q=partition+function+knot+theory
 
** http://blogsearch.google.com/blogsearch?q=partition+function+knot+theory
 
** [http://blogsearch.google.com/blogsearch?q=%EB%A7%A4%EB%93%AD%EC%9D%B4%EB%A1%A0 http://blogsearch.google.com/blogsearch?q=매듭이론]
 
** [http://blogsearch.google.com/blogsearch?q=%EB%A7%A4%EB%93%AD%EC%9D%B4%EB%A1%A0 http://blogsearch.google.com/blogsearch?q=매듭이론]
** http://blogsearch.google.com/blogsearch?q=
+
** http://blogsearch.google.com/blogsearch?q=knot+theory
 
** http://blogsearch.google.com/blogsearch?q=
 
** http://blogsearch.google.com/blogsearch?q=
  

2010년 1월 29일 (금) 15:06 판

introduction
  • three Reidemeister moves

 

 

examples
  • trivial knot
  • Hopf link
  • figure 8 knot
  • trefoil knot

 

 

knot diagram
  • projection to two dimensional space

 

 

Kauffman's principle

 

 

knot invariants
  • Alexander-Conway polynomial
  • Jones polynomial
  • Vassiliev invariants
  • define them recursively using the skein relation
  • Reidemeister's theorem is used to prove that they are knot invariants
  • The puzzle on the mathematical side was that these objects are invariants of a three dimensional situation, but one did not have an intrinsically three dimensional definition.
  • There were many elegant definitions of the knot polynomials, but they all involved looking in some way at a two dimensional projection or slicing of the knot, giving a two dimensional algorithm for computation, and proving that the result is independent of the chosen projection.
  • This is analogous to studying a physical theory that is in fact relativistic but in which one does not know of a manifestly relativistic formulation - like quantum electrodynamics in the 1930's.

 

 

Jones polynomial

 

 

Knot theory, statistical mechanics and quantum groups
  • using the Boltzmann weights from the various exactly solvable models, we can discover an infinite series of invariants of knots
  • so the problem is to find a nice set of Boltzmann weights which give non-trivial invariants

 

 

history

 

 

related items

 

 

books

 

 

encyclopedia

 

 

question and answers(Math Overflow)

 

 

blogs

 

 

articles

 

 

experts on the field

 

 

TeX