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math.DG2011
Invariant prolongation of overdetermined PDE's in projective, conformal and Grassmannian geometry
Matthias Hammerl, Petr Somberg, Vladimír Souček +1
This is the second in a series of papers on natural modification of the normal tractor connection in a parabolic geometry, which naturally prolongs an underlying overdetermined sys…
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…