BIRS Workshop Lecture Videos

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BIRS Workshop Lecture Videos

A-infinity algebras and matrix factorisations Murfet, Daniel


I will give a general introduction to A-infinity algebras and their triangulated categories of modules, with a focus on an important class of concrete examples coming from algebraic geometry, specifically, from isolated hypersurface singularities. Since Dyckerhoff identified the DG-endomorphism algebra of the generator of the homotopy category of matrix factorisations in his thesis, it has been possible to (in principle) apply the general method of minimal models to produce the associated A-infinity algebra. I will describe a good choice of homotopy retract which makes such calculations tractable, and sketch the yoga of Feynman diagrams that computes the A-infinity algebra associated to a given singularity.

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