Exact Triangles for SO(3) Instanton Homology of Webs

The SO(3) instanton homology recently introduced by the authors associates a finite-dimensional vector space over the field of two elements to every embedded trivalent graph (or "web"). The present paper establishes a skein exact triangle for this instanton homology, as well as a realizati...

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Bibliographic Details
Main Authors: Kronheimer, P. B., Mrowka, Tomasz S
Other Authors: Massachusetts Institute of Technology. Department of Mathematics
Format: Article
Published: Oxford University Press (OUP) 2018
Online Access:http://hdl.handle.net/1721.1/116014
https://orcid.org/0000-0001-9520-6535
Description
Summary:The SO(3) instanton homology recently introduced by the authors associates a finite-dimensional vector space over the field of two elements to every embedded trivalent graph (or "web"). The present paper establishes a skein exact triangle for this instanton homology, as well as a realization of the octahedral axiom. From the octahedral diagram, one can derive equivalent reformulations of the authors' conjecture that, for planar webs, the rank of the instanton homology is equal to the number of Tait colorings.