University of Sydney Algebra Seminar

Gus Lehrer (University of Sydney)

Friday 22 September, 12:05-12:55pm, Place: 373

The second fundamental theorem of invariant theory-old, new and super

I shall explain a diagrammatic method for converting tensor invariants of the orthosymplectic supergroup into tensor invariants of the super general linear group. This is based on algebraic-geometric arguments which go back to Atiyah, and leads to precise versions of the first and second fundamental theorems for the orthosymplectic Lie superalgebra. This is joint work with Ruibin Zhang.