Comments on: Chord Diagrams and Lie Algebras http://cornellmath.wordpress.com/2007/12/25/chord-diagrams-and-lie-algebras/ Geometry, Topology, Categories, Groups, Physics, . . . Everything Sat, 19 Jul 2008 10:29:52 +0000 http://wordpress.org/?v=MU By: Predrag Cvitanovic http://cornellmath.wordpress.com/2007/12/25/chord-diagrams-and-lie-algebras/#comment-2596 Predrag Cvitanovic Mon, 14 Jan 2008 03:11:06 +0000 http://cornellmath.wordpress.com/2007/12/25/chord-diagrams-and-lie-algebras/#comment-2596 I am very glad to see diagrammatic methods getting some traction, and hate to sound like a nagging wife, but you are sure this is exclusively Penrose notation? I am a great fan of Roger Penrose myself, but if you have seen the diagrammatic Jacobi identity in the form you write here in a publication earlier than 1976, I would love to see it. I have written down what I know about this in Section 4.9 A brief history of birdtracks of birdtracks.eu [mirror birdtracks.dk] happy chordin' Predrag I am very glad to see diagrammatic methods getting some traction, and hate to sound like a nagging wife, but you are sure this is exclusively Penrose notation? I am a great fan of Roger Penrose myself, but if you have seen the diagrammatic Jacobi identity in the form you write here in a publication earlier than 1976, I would love to see it.

I have written down what I know about this in
Section 4.9 A brief history of birdtracks
of birdtracks.eu [mirror birdtracks.dk]

happy chordin’
Predrag

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