36 citations · 99 across the 11 of their papers we have counts for
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math.DG2010
Coupling solutions of BGG-equations in conformal spin geometry
Matthias Hammerl
BGG-equations are geometric overdetermined systems of PDEs on parabolic geometries. Normal solutions of BGG-equations are particularly interesting and we give a simple formula for…
math.DG2010★ 29 cited
The twistor spinors of generic 2- and 3-distributions
Matthias Hammerl, Katja Sagerschnig
Generic distributions on 5- and 6-manifolds give rise to conformal structures that were discovered by P. Nurowski resp. R. Bryant. We describe both as Fefferman-type constructions…
math.DG2010★ 3 cited
On a new normalization for tractor covariant derivatives
Matthias Hammerl, Petr Somberg, Vladimir Soucek +1
A regular normal parabolic geometry of type on a manifold gives rise to sequences of invariant differential operators, known as the curved version of the BGG resolu…