F. Ngakeu

activity

20012026

most citedNoncommutative Riemannian Geometry of the Alternating Group A_4

35 citations · 38 across the 6 of their papers we have counts for

collaborators

6 papers

math.DS2026

Diffeomorphism Group Actions on Para-Kähler Structures: Lifts and Induced Dynamics on 3-Webs

Bertuel Tangue Ndawa, Ferdinand Ngakeu, Nasser Saipele Nansidi +1

Let $M$ be a smooth manifold equipped with a para-Kähler structure. We define an action of the diffeomorphism group $Diff (M)$ on the space of para-Kähler structures…

math.DS2026

Bi-Lagrangian and transverse Dirac structures induced on the Whitney sum

Bertuel Tangue Ndawa, Ferdinand Ngakeu, Nasser Saipele Nansidi

Let $(M, ω, F_{1}, F_{2})$ be a bi-Lagrangian manifold. For a distribution $D \subseteq T M$ , we characterize when the subbundle $N^{*t}\mathcal{D}:=\mathcal{D…

math.DG2018★ 1 cited

$α$ -associated Metric On Rigged Null hypersurfaces

Ferdinand Ngakeu, Hans Fotsing Tetsing

Let $x:M\to\Bm$ be the canonical injection of a Null Hypersurface $(M, g)$ in a semi-Riemannian manifold $(M, g ˉ)$ . A rigging for $M$ is a vector field $L$ defined on…

math.DG2017

Null hypersurfaces and trapping horizons

Hans Fotsing T., Ferdinand Ngakeu

The purpose of the present work is to study (marginally) trapped submanifolds lying in a null hypersurface. Let $(M,g,N)\to\Bm(c)$ be a null hypersurface of a space-time with const…

math.QA2002★ 2 cited

Classification of differentials and Cartan calculus on bicrossproducts

F. Ngakeu, S. Majid, J-P. Ezin

We provide the Cartan calculus for bicovariant differential forms on bicrossproduct quantum groups $k(M)\lrbicross kG$ associated to finite group factorizations $X = GM$ and a field…

math.QA2001★ 35 cited

Noncommutative Riemannian Geometry of the Alternating Group A_4

F. Ngakeu, S. Majid, D. Lambert

We study the noncommutative Riemannian geometry of the alternating group $A_4=(Z_2 \times Z_2)\cross Z_3$ using a recent formulation for finite groups. We find a unique `Levi-Civit…