Joel Merker

most citedAffine Homogeneous Surfaces with Hessian rank 2 and Algebras of Differential Invariants

1 citations · 2 across the 2 of their papers we have counts for

collaborators

3 papers

math.DG2020★ 1 cited

Affine Homogeneous Surfaces with Hessian rank 2 and Algebras of Differential Invariants

Zhangchi Chen, Joël Merker

Consider a graphed holomorphic surface $u = F (x, y)$ in $C_{x, y, u}^{3}$ under the action of the affine transformation group $A (3)$ . In 1999, Eastwood and Ezhov obtained a list…

math.DG2020★ 1 cited

On degenerate para-CR structures: Cartan reduction and homogeneous models

Joel Merker, Pawel Nurowski

Motivated by recent works in Levi degenerate CR geometry, this article endeavours to study the wider and more flexible para-CR structures for which the constraint of invariancy und…

math.DG2019

New Explicit Lorentzian Einstein-Weyl Structures in 3-Dimensions

Joël Merker, Paweł Nurowski

On a $3$ D manifold, a Weyl geometry consists of pairs $(g, A) =$ (metric, $1$ -form) modulo gauge $g = e^{2 φ} g$ , $A = A + d φ$ . In 1943, Cartan showe…