

Geometric Topology Seminar
May 17, 2018 14:00–16:50, Moscow, Math Department of the Higher School of Economics, Room 108






Invariants on Hopf algebra of deltamatroids and Hopf algebra of Lagrangian subspaces that satisfy fourterm relations
V. I. Zhukov^{} 
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Abstract:
In this talk I will continue the topic Alex Dunaykin spoke about.
I will briefly recall the connection between Hopf algebras of chord diagrams, intersection graphs, ribbon (embedded) graphs and binary deltamatroids.
I will give some examples of weight systems on the Hopf algebra of deltamatroid.
And then I will describe isomorphism between Hopf algebra of ribbon graphs and Hopf algebra of Lagrangian subspaces.

