Abstract. This paper obtains all solvable 3-Lie algebras with the m-dimensional filiform 3-Lie algebra N (m ≥ 5) as a maximal hypo-nilpotent ideal, and proves that the m-dimensional filiform 3-Lie algebra N can’t be as the nilradical of solvable non-nilpotent 3-Lie algebras. By means of one dimensional extension of Lie algebras to the 3-Lie algebras, we get some classes of solvable Lie algebras...

We consider 6-dimensional nearly Kähler manifolds M and prove that any totally geodesic hypersurface N of M is a Sasaki-Einstein manifold, and so it has a hypo structure in the sense of [8]. We show that such a hypo structure defines a nearly Kähler structure on N × R, and a compact nearly Kähler structure with conical singularities on N 5 × S 1 when N is compact. Moreover, an extension of the ...

Abstract. Mounira H, Fatiha BS, Noureddine S. 2023. Impact of physicochemical parameters water on the biodiversity invertebrate fauna from Echatt Lake (Northeast Algeria). Biodiversitas 24: 258-268. Algeria is a case study ignorance. To date, there are neither complete inventories for any taxa nor atlas across country! Yet, great importance global biodiversity. The coastal area part hotspot whi...

On 20 August 2019, a flash flood occurred in Sanjiang Town, Sichuan, China, and caused great damage to people living there. The town lies at the junction of five streams, with streams A, B, C combining further dividing into D E. slope is about 3~5%, while E around 0.3%. Town actually transition from supercritical subcritical slope. During flood, huge sediments were released C, transported strea...

It is of necessity to investigate the adjustment flood discharge capacity in Lower Yellow River (LYR) because its profound importance sediment transport and control decision-making, additionally magnitude influenced by channel upstream boundary conditions, which have significantly varied with ongoing implementation soil water conservation measures Loess Plateau operation Xiaolangdi Reservoir. T...

The prevailing labor market models assume that minimum wages do not affect the labor supply schedule. We challenge this view in this paper by showing experimentally that minimum wages have significant and lasting effects on subjects’ reservation wages. The temporary introduction of a minimum wage leads to a rise in subjects’ reservation wages which persists even after the minimum wage has been ...